The advent of advanced computerized reservations systems in the late 1970s, most notably Sabre, allowed airlines to easily perform cost-benefit analyses on different pricing structures, leading to almost perfect price discrimination in some cases (that is, filling each seat on an aircraft at the highest price that can be charged without driving the consumer elsewhere).

My fiancé and I are interested in the Greek Islands for our honeymoon in early August. I know it’s not the ideal time to go, but it’s right after our wedding. We are two women in our late thirties. We’d fly into Athens and then I was thinking Santorini for 4 nights and then possibly one other island. We’re into the beach, snorkeling/boat trip, maybe a hike or bike ride and amazing food. We’re not interested in the party scene, but definitely want to explore amazing restaurants. You know, the perfect amount of romance and relaxation combined with culture and epic scenery. Suggestions? Thanks in advance!
Located 15 minutes' walk from the Las Vegas Strip, this non-gaming and nonsmoking hotel offers air-conditioned rooms with free WiFi for all devices. Facilities include an outdoor swimming pool. Location was great. Near to everything but not directly in the strip which can be very noisy. Great services such as shuttle buses. Super comfy beds. Great to have your own cooking facilities.
Ferries are not really cheap any more – certainly not like they used to be – but the vessel fleet is better, safer and faster than in previous years so the cost is justified. You can get exceptionally cheap deals on longer-haul routes if you are prepared to forego a booked seat: €14 v €40 on a run to a mid-distant island, but it’s probably wise to consider taking fast catamarans to get to core islands (Mykonos, Santorini, Paros etc.) and even then, go the extra 10/15% for Business or even VIP class for the extra comfort. On longer hauls it can be cheaper to fly if you seek out flights online and book beforehand.
Though this country has some 322 islands, less than a third are inhabited. Most of the action happens in the western islands, but no matter where you go, this is heaven. Any time the name Fiji is heard, visions of beaches and tropical ocean dance in people’s head. There’s a good reason for that – because this place is one of the best places to go in the world, and with so many islands, you’re bound to find one you like.
Often the companies combine IT operations, or purchase fuel and aircraft as a bloc to achieve higher bargaining power. However, the alliances have been most successful at purchasing invisible supplies and services, such as fuel. Airlines usually prefer to purchase items visible to their passengers to differentiate themselves from local competitors. If an airline's main domestic competitor flies Boeing airliners, then the airline may prefer to use Airbus aircraft regardless of what the rest of the alliance chooses.
The intense nature of airfare pricing has led to the term "fare war" to describe efforts by airlines to undercut other airlines on competitive routes. Through computers, new airfares can be published quickly and efficiently to the airlines' sales channels. For this purpose the airlines use the Airline Tariff Publishing Company (ATPCO), who distribute latest fares for more than 500 airlines to Computer Reservation Systems across the world.

Have just discovered your blog today and love it! I am a student from NZ and want to travel to somewhere fantastic next year for a few weeks to get away from the hussle and bussle of study and work. Originally thought Thailand would be fantastic, and I see you agree with me here so great! But I also did not realise Bali was also so cheap. For a first trip overseas for a poor student (apart from Aus), where would you recommend? Bali or Thailand?
We’re on a budget (think €50 per person per day) and would like to go someplace warm and sunny where there’s also a combination of culture and nature. So we can explore in the mornings and relax at the beach in the afternoon. Preferably a sandy beach. We don’t need a lot of nightlife but it would be nice if not the whole island is closing down already. Do you have a suggestion? 

My fiancee and I are heading to Greece in July. We’ve been to Naxos, Paros, Mykonos, and Santorini. This time we plan on being there July 1 to 23. We’re definitely including Milos, and one of Paros or Naxos. Any recommendations for other islands? Any particular ferry routes we should consider? Some “less touristy” islands are a must (for at least one island). We can be lively or very chilled. Thanks and best wishes!
Nine weeks in Greece is a dream itinerary it certainly gives you lots of flexibility. As you seem to have Athens and the Peloponnese sorted, you just need to sort out your five weeks on the islands. What you need to realize, however, is that the islands are not all mutually interconnected, but rather they are ‘grouped’ – both administratively and from the point of view of transport routes. Here are the main groups.
Operating costs for US major airlines are primarily aircraft operating expense including jet fuel, aircraft maintenance, depreciation and aircrew for 44%, servicing expense for 29% (traffic 11%, passenger 11% and aircraft 7%), 14% for reservations and sales and 13% for overheads (administration 6% and advertising 2%). An average US major Boeing 757-200 flies 1,252 mi (2,015 km) stages 11.3 block hours per day and costs $2,550 per block hour : $923 of ownership, $590 of maintenance, $548 of fuel and $489 of crew; or $13.34 per 186 seats per block hour. For a Boeing 737-500, a low-cost carrier like Southwest have lower operating costs at $1,526 than a full service one like United at $2,974, and higher productivity with 399,746 ASM per day against 264,284, resulting in a unit cost of 0.38 $cts/ASM against 1.13 $cts/ASM.[71]

There are many picturesque villages to explore, and the beaches are always far from crowded. If you like walking, the lush vegetation and cliffs are ideal, while if you like to do some underwater exploration, there are many scuba diving and fishing opportunities, too. Additionally, Dugi Otok is home to one of Croatia’s best sandy beaches, Sakarun, which some compare to the beaches of the Caribbean, making it a great family spot.


Fiji is poised for a comeback after 2016’s Tropical Cyclone Winston, the most severe on record. The quintessential Fijian Jean-Michel Cousteau Resort on Savusavu Bay reopened in September with 25 newly thatched houses known as bures. For total seclusion, guests are ferried via seaplane to the remote Kokomo Island, a new collection of 21 bures and five villas on uninhabited Yaukuve Island.
But Indonesia has more than just Bali. The nearby Gili Islands are another incredible island getaway. Both destinations make for a more active tropical vacation and the weather remains pretty constant all year round (though April to October sees slightly drier weather). Both Bali and the Gili Islands are close enough that you should be able to visit them both on your trip to really get the most out of this idyllic corner of the world.
The busiest and hottest months. If you like beach parties and packed clubs then Mykonos is the place to be. The less-busy islands (Antiparos, Sifnos, Ikaria, Folegandros, Milos) have short tourists seasons and this is when they’re fully open and running. Santorini, Crete, Rhodes, and Corfu are in peak-season but all are large enough to retain their charm.
Domestic air transport grew in China at 15.5 percent annually from 2001 to 2006. The rate of air travel globally increased at 3.7 percent per year over the same time. In the EU greenhouse gas emissions from aviation increased by 87% between 1990 and 2006.[75] However it must be compared with the flights increase, only in UK, between 1990 and 2006 terminal passengers increased from 100 000 thousands to 250 000 thousands.,[76] according to AEA reports every year, 750 million passengers travel by European airlines, which also share 40% of merchandise value in and out of Europe.[77] Without even pressure from "green activists", targeting lower ticket prices, generally, airlines do what is possible to cut the fuel consumption (and gas emissions connected therewith). Further, according to some reports, it can be concluded that the last piston-powered aircraft were as fuel-efficient as the average jet in 2005.[78]

We are planning to come back at the start of September for 2 weeks to visit different islands for some beach and sun. To give you some background, we loved Santorini, Milos and the quieter / smaller places in Crete (Loutro, Falassarna, Samaria Gorge). We enjoy beach time, some hiking, site seeing, good wine / food and good / buzzy atmosphere at night for dinner / tavernas.

Went to Fiji for my honeymoon and i don’t think that trip can be topped. We wanted seclusion, privacy and romance and thats what we got. Our bure was 20 feet from the beach where we could relax and maybe see 1 or two people all day. It was incredible. The resort was called Matangi island resort. Great staff, great food…. It’s as close to perfect as you can get.

You seem to have your heart set on Zakynthos but I have to say it’s not a good use of time for a sort-of overrated payoff. Your time is much better spent (in my opinion) seeing another Greek island in the cyclades (maybe taking a ferry to Naxos or Paros sitting outside on the deck drinking a bottle of wine) rather than taking a bus and connecting flights. Zakynthos and Santorini/Mykonos are on opposite sides of the country and the only way from one to the other is by flying (or some combination of bus and ferry). So, my recommendation is to consider spending those Zakynthos days in Naxos, Paros, Milos, or some other Cycladic island.
Fiji is poised for a comeback after 2016’s Tropical Cyclone Winston, the most severe on record. The quintessential Fijian Jean-Michel Cousteau Resort on Savusavu Bay reopened in September with 25 newly thatched houses known as bures. For total seclusion, guests are ferried via seaplane to the remote Kokomo Island, a new collection of 21 bures and five villas on uninhabited Yaukuve Island.
Described as the Philippines’ last frontier, Palawan boasts not one but two UNESCO World Heritage sites: Tubbataha Reefs Natural Park (don your dive gear), and the Puerto-Princesa Subterranean River National Park (climb in a canoe for a guided tour). Striking limestone formations like Ugong Rock and Karst Mountain Elephant Cave rise starkly from the rice fields of the interior. You can even find overwater bungalows on outlying islands, courtesy of El Nido Resorts. 

Blaca Hermitage in the south of the island is a must-visit, as well as Vidova Gora Mountain, which is the highest peak on the island, offering you stunning views across the Adriatic and to neighboring islands on a clear day. Brač is also where you’ll find the famous Zlatni Rat Beach, one of the absolute best Croatia beaches (and even in all of Europe) and a wonderful place to spend a day. This all makes Brač one of the best islands near Split, a perfect day trip from Croatia’s second-largest city.
Travel here is now easier than ever thanks to recent renovations at both international airports. One of Grand Cayman’s first hotel openings in years, Kimpton Seafire Resort + Spa opened in November, with 266 design-centric guest rooms along a 500-foot coral sand stretch of Seven Mile Beach. At the grass-and-teak filled, flip-flop friendly Margaritaville Beach Resort, which will open in early 2017 with 286 guest rooms, kids can cruise down the two-story waterslide and you’ve got a License to Chill at the bar with the same name.

Argostoli is the capital on the mid-west flank of the island and is not really a destination itself, that moniker falling to the contiguous beach scene running from Lourdata south eastward to Skala. While development might have caught up here by now, it should still be a pleasant beach scene and focus for a relaxing stay. The Melissani Cave on the east coast is a must attraction and while it can be visited on a day excursion from anywhere on Kefallonia the two villages or Agia Efthymia and Poros are low-key ‘resorts’ pulling in a regular crowd of travellers and may warrant a look-in. The port of Pesada (just west of Lourdata) is the home of the local ferry to Zakynthos (Zante).
Hi Dave! Your website is so detailed and helpful! I’m starting to plan a trip for late May-early June. We were interested in visiting Santorini, Naxos (we opted for Naxos instead of party-filled Mykonos) and Milos. Our main airport of arrival is Athens. What order should we visit all three islands (in terms of convenience of ferry/flight availability) and how many nights do you recommend allotting to each? Thanks in advance for your time!
Increasingly since 1978, US airlines have been reincorporated and spun off by newly created and internally led management companies, and thus becoming nothing more than operating units and subsidiaries with limited financially decisive control. Among some of these holding companies and parent companies which are relatively well known, are the UAL Corporation, along with the AMR Corporation, among a long list of airline holding companies sometime recognized worldwide. Less recognized are the private equity firms which often seize managerial, financial, and board of directors control of distressed airline companies by temporarily investing large sums of capital in air carriers, to rescheme an airlines assets into a profitable organization or liquidating an air carrier of their profitable and worthwhile routes and business operations.
CheapTickets.ca offers a massive selection of the cheapest flight tickets and reduced airfares, as well as hotel discounts, car rental savings, vacation package deals and more! Buy your cheap tickets from us and feel confident that your travel plans will be handled with care: we offer a low rate guarantee, secure and confidential checkout, and toll-free 24/7 customer support.
Following the 1978 deregulation, U.S. carriers did not manage to make an aggregate profit for 12 years in 31, including four years where combined losses amounted to $10 billion, but rebounded with eight consecutive years of profits since 2010, including its four with over $10 billion profits. They drop loss-making routes, avoid fare wars and market share battles, limit capacity growth, add hub feed with regional jets to increase their profitability. They change schedules to create more connections, buy used aircraft, reduce international frequencies and leverage partnerships to optimise capacities and benefit from overseas connectivity.[51]
Hey, sailors: In May, the 35th annual America’s Cup heads to the pink-sand beaches of the Great Sound, a prime time for racing enthusiasts. The event’s official hotel partner, The Hamilton Princess & Beach Club, transformed its “pink palace” with new guests suites, exhale spa, a state-of-the-art marina and three new restaurants including celebrity chef Marcus Samuelsson’s new venue, Marcus’. The upcoming Ritz-Carlton Reserve hotel and branded residences plan to open a mega-yacht marina in time for the race, but keep this island on your long-term radar: Michael Douglas and Catherine Zeta Jones break ground on the redevelopment of the famed Ariel Sands resort in 2017.
The first French airline was Société des lignes Latécoère, later known as Aéropostale, which started its first service in late 1918 to Spain. The Société Générale des Transports Aériens was created in late 1919, by the Farman brothers and the Farman F.60 Goliath plane flew scheduled services from Toussus-le-Noble to Kenley, near Croydon, England. Another early French airline was the Compagnie des Messageries Aériennes, established in 1919 by Louis-Charles Breguet, offering a mail and freight service between Le Bourget Airport, Paris and Lesquin Airport, Lille.[10]
What’s most stunning in Bali — dazzling beaches like Nusa Dua, Seminyak and Jimbaran Bay? Ubud’s terraced rice fields, sacred forest and ancient monuments? Or the island’s 10,000 intricate temples, including Pura Empul (the one you bathe in) and Uluwatu sea temple? Experience all of the above and decide for yourself. The Land of the Gods also boasts a loveliness that is more than skin-deep, thanks to its warm people and ubiquitous, inclusive spirituality. 

Hi Dave! Your website is so detailed and helpful! I’m starting to plan a trip for late May-early June. We were interested in visiting Santorini, Naxos (we opted for Naxos instead of party-filled Mykonos) and Milos. Our main airport of arrival is Athens. What order should we visit all three islands (in terms of convenience of ferry/flight availability) and how many nights do you recommend allotting to each? Thanks in advance for your time!
Fiji is poised for a comeback after 2016’s Tropical Cyclone Winston, the most severe on record. The quintessential Fijian Jean-Michel Cousteau Resort on Savusavu Bay reopened in September with 25 newly thatched houses known as bures. For total seclusion, guests are ferried via seaplane to the remote Kokomo Island, a new collection of 21 bures and five villas on uninhabited Yaukuve Island.
Many countries have national airlines that the government owns and operates. Fully private airlines are subject to a great deal of government regulation for economic, political, and safety concerns. For instance, governments often intervene to halt airline labor actions to protect the free flow of people, communications, and goods between different regions without compromising safety.

The only ferry from Kusadasi to Greece goes to the Greek island of Samos. It’s a great island and certainly worth a few days. From Samos, there are usually direct ferries to Mykonos and Syros. These are very different islands that have a very different vibe – but both appealing in their own way. From Mykonos there will be direct flights to Western Europe (most likely Rome, Paris, Amsterdam, and London) though not every flight flies every day so requires some planning. Santorini would be another ferry ride from Mykonos. And Crete farther still. So you wouldn’t have time to get to either island.
Fiji is poised for a comeback after 2016’s Tropical Cyclone Winston, the most severe on record. The quintessential Fijian Jean-Michel Cousteau Resort on Savusavu Bay reopened in September with 25 newly thatched houses known as bures. For total seclusion, guests are ferried via seaplane to the remote Kokomo Island, a new collection of 21 bures and five villas on uninhabited Yaukuve Island.
In many ways, the biggest winner in the deregulated environment was the air passenger. Although not exclusively attributable to deregulation, indeed the U.S. witnessed an explosive growth in demand for air travel. Many millions who had never or rarely flown before became regular fliers, even joining frequent flyer loyalty programs and receiving free flights and other benefits from their flying. New services and higher frequencies meant that business fliers could fly to another city, do business, and return the same day, from almost any point in the country. Air travel's advantages put long distance intercity railroad travel and bus lines under pressure, with most of the latter having withered away, whilst the former is still protected under nationalization through the continuing existence of Amtrak.
my Name is Julie. for those of view who have never visited tahiti you are seriously missing out. its beautiful and wild and the people are so nice and the weather is great. we got to eat a giant freshly caught tuna and had a big cook out wih tahitian dancers who tell a story about their islands and history. if your looking for paradise tahiti is it do not forget the passports though. you go out and watch the golden sun dance on the water as you watch it set for the night as it gently washes away the stress of busy cities that we live in. i can’t wait to go back what an adventure yahoo!
I’m traveling to Greece for the first time, and I’m so fortunate to be staying for about 9 weeks (peak season, unfortunately, I’m an educator and it’s summer!). I have ample time planned in Athens, and the Peloponnese (with rental car). Here’s where I need some help and suggestions. I have 5 weeks saved for the islands and I’m still trying to figure out how to spend them. I’m not sure if I’d like to cover just a few islands and soak them in a bit deeper with longer stays…or to travel at a quicker pace covering several islands in each main area (the Cyclades, Ionians, Crete-Rhodes Dodecanese, Eastern Islands) I’m an easy traveler and enjoy diversity. I crave spending time with locals and interacting with families – home stays at times, I enjoy the water and I’m an avid diver, I like hiking and exploring. Also, want to perhaps relax a bit – food/wine tasting welcomed). I’m excited about the trip and my ideas are racing all over. Do you have some ideas and suggestions to share? A rough sketch itinerary for Greece? Thanks so much!
Glass-bottom boats with thatched canopies ply shimmering lagoons. Tanned locals in pareus (sarongs) play ukuleles. Ridged velvet-green mountains punctuate the skyline. Palm trees reach higher than any roof. This is reality in the Cook Islands, a 15-isle archipelago marooned in the South Pacific. Go on a mountain safari on the main island of Rarotonga, or head to Aitutaki to stay in an overwater bungalow and motu-hop to deserted sugar beaches that beg to be Instagrammed. 

my Name is Julie. for those of view who have never visited tahiti you are seriously missing out. its beautiful and wild and the people are so nice and the weather is great. we got to eat a giant freshly caught tuna and had a big cook out wih tahitian dancers who tell a story about their islands and history. if your looking for paradise tahiti is it do not forget the passports though. you go out and watch the golden sun dance on the water as you watch it set for the night as it gently washes away the stress of busy cities that we live in. i can’t wait to go back what an adventure yahoo!
Of the above groups the Dodecanese probably constitute the best opportunity to mix islands between groups. You could, for example, take the Blue Star Ferries and map an island-hopping route that essentially heads in the same direction. In this way you could take in some of the Cyclades – Syros, Mykonos, Patmos, Naxos and some of the Dodecanese – Patmos, Leros, Kos, Chalki, and Rhodes – without any backtracking. Hellenic Seaways is another major ferry company whose routes you may want to explore.

They are packaged tourist places, though not quite in the extreme league of the north coast of Crete, but certainly they look to the ‘managed’ traveller more than the individual. September is a good time, though the start of September is still pretty close to high season and you will need to make bookings in advance. The waters of the Ionian are a bit chillier than the Aegean, but the islands sport some very spectacular beaches and seaside resorts. They are very popular with Italian travellers in their boats and motorhomes. 

By the early 1920s, small airlines were struggling to compete, and there was a movement towards increased rationalization and consolidation. In 1924, Imperial Airways was formed from the merger of Instone Air Line Company, British Marine Air Navigation, Daimler Airway and Handley Page Transport Co Ltd., to allow British airlines to compete with stiff competition from French and German airlines that were enjoying heavy government subsidies. The airline was a pioneer in surveying and opening up air routes across the world to serve far-flung parts of the British Empire and to enhance trade and integration.[14]
We are planning to come back at the start of September for 2 weeks to visit different islands for some beach and sun. To give you some background, we loved Santorini, Milos and the quieter / smaller places in Crete (Loutro, Falassarna, Samaria Gorge). We enjoy beach time, some hiking, site seeing, good wine / food and good / buzzy atmosphere at night for dinner / tavernas.
Lefkada is an island, but is connected to the mainland by a causeway at the northern tip and its access airport is on the mainland at Aktio (Preveza). It is an island popular with Greeks and mainly European visitors. Italians and Brits predominate. It is green, verdant, has good beaches and facilities and is compact enough to get around easily. Tourism is centred on the east coast around the port village of Nydri. It is low-key accommodation with villas and small family-run hotels predominating. Off-shore from Nydri are a couple of islands worth visiting on excursions: the sizeable Meganisi (car ferries run to and fro’) and the private Skorpios Island which belong to the Onassis family. On your own hired motor boat, you can heave-to on just one private beach on the north side of the island and swim and claim boasting rights to having swum on Aristotle Onassis’ private piece of Greece.
Also heralded for its seclusion — as well as its beaches, diving, and mountainous beauty — is Indonesia’s Lombok, an island just east of Bali that one reader dubbed “Romance Island.” In fact, Indonesia seems to have the joys of island life down to a science, laying claim to the top three spots people most enjoy visiting. Read on for the full list of 15 winners.

common.fragment.mobile.datapicker.screenreader.text Valid date format: two-digit day, two-digit month, then full four-digit year, each separated by a forward slash or space. Example, enter 21 space 09 space 2016 to represent September 21, 2016, or 01/08/2016 to represent August 1, 2016. Alternately, use arrow keys to move through dates in the calendar grid. Use arrow keys to select your travel dates. Press Enter to confirm and continue Use arrow keys to select your travel dates. Press Enter to confirm and continue


Drop-dead gorgeous Fiji is a filmmaker’s dream. Spy its Mamanuca island chain in Cast Away and Survivor; ogle its Yasawa archipelago in the 1980 version of Blue Lagoon. A dizzying amount of natural beauty — from mountains and mangroves to rivers and reefs — swathes Fiji’s 333 islands, and awe-inspiring wildlife (whales, sea turtles, dolphins, parrots) is the icing on the cake. For scenery with a side of luxury and exclusivity, reserve a bure (villa) at one of Fiji’s numerous private-island resorts.
Following the 1978 deregulation, U.S. carriers did not manage to make an aggregate profit for 12 years in 31, including four years where combined losses amounted to $10 billion, but rebounded with eight consecutive years of profits since 2010, including its four with over $10 billion profits. They drop loss-making routes, avoid fare wars and market share battles, limit capacity growth, add hub feed with regional jets to increase their profitability. They change schedules to create more connections, buy used aircraft, reduce international frequencies and leverage partnerships to optimise capacities and benefit from overseas connectivity.[51]

Beach Day: Spend a day on one of many beautiful small beaches and bays, including pebble and sand beaches. Beaches to check out are Pocukmarak (the biggest beach on the south side, which also happens to contain a stone sarcophagus and two covers in the water that are around 1500 years old), Tratica, Carpusina and Sotorisce (the biggest and the most popular beach on Silba).
Java, with a population of 140 million, makes its first appearance on this list. Celebrated for its ancient culture, breathtaking vistas, and UNESCO World Heritage sites like the Borobudur Temple Compounds, the island also offers the opportunity to indulge in modernity (five-star hotels abound). Waterfalls, volcanoes, protected parks, and white-sand beaches also allow visitors to get away from the thrum.
By the early 1920s, small airlines were struggling to compete, and there was a movement towards increased rationalization and consolidation. In 1924, Imperial Airways was formed from the merger of Instone Air Line Company, British Marine Air Navigation, Daimler Airway and Handley Page Transport Co Ltd., to allow British airlines to compete with stiff competition from French and German airlines that were enjoying heavy government subsidies. The airline was a pioneer in surveying and opening up air routes across the world to serve far-flung parts of the British Empire and to enhance trade and integration.[14]

The only ferry from Kusadasi to Greece goes to the Greek island of Samos. It’s a great island and certainly worth a few days. From Samos, there are usually direct ferries to Mykonos and Syros. These are very different islands that have a very different vibe – but both appealing in their own way. From Mykonos there will be direct flights to Western Europe (most likely Rome, Paris, Amsterdam, and London) though not every flight flies every day so requires some planning. Santorini would be another ferry ride from Mykonos. And Crete farther still. So you wouldn’t have time to get to either island.


Glad to see you mentioned the Cook Islands – my husband and I went to Rarotonga for a week in 2008 and fell in love with it – can’t wait to someday bring our kids back there – they would love it, too! Very few people have actually heard of the Cooks, or know where they are, and while I like the “secrecy” of it, I wish more people would visit! Currently there are only 1-2 flights/week from the US – makes planning trips there a bit tougher!We only took a day trip to Aitutaki because of time, but it was probably the most beautiful place I’ve ever been. Glad to see you agree! 

Thus the last 50 years of the airline industry have varied from reasonably profitable, to devastatingly depressed. As the first major market to deregulate the industry in 1978, U.S. airlines have experienced more turbulence than almost any other country or region. In fact, no U.S. legacy carrier survived bankruptcy-free. Among the outspoken critics of deregulation, former CEO of American Airlines, Robert Crandall has publicly stated:

Hi, Dave! My husband and I will be going to Greece 8/26 – 9/4. We are flying into and out of Athens for cost efficiency. We really want to see Navagio Beach on Zakynthos for a day, and we realize this will likely be an overnight trip, or even 2 nights depending on the travel options. What is the best way to get from Athens to Zykanthos? What is the best way to get from Zakynthos to Santorini? Or is it best to just go from Zakynthos back to Athens and then to Santorini? We are trying to avoid additional flights but realize we may have to fly from Zakynthos to Santorini.

Glass-bottom boats with thatched canopies ply shimmering lagoons. Tanned locals in pareus (sarongs) play ukuleles. Ridged velvet-green mountains punctuate the skyline. Palm trees reach higher than any roof. This is reality in the Cook Islands, a 15-isle archipelago marooned in the South Pacific. Go on a mountain safari on the main island of Rarotonga, or head to Aitutaki to stay in an overwater bungalow and motu-hop to deserted sugar beaches that beg to be Instagrammed.
Considering your interests (great food, hiking, beaches, nightlife unimportant) then Naxos should definitely be your other island. (And Naxos has many daily ferry connections with both Santorini and Athens.) Also, Athens needs at least one full day to explore so you should drop any thoughts about Delphi or Nafplio. Also, I would look into flights from Athens to Santorini on your night of arrival. If you could get to Santorini that night (and move your day in Athens to the end of your trip) you’d almost gain an entire day and could spend two nights on Naxos.
Moreover, the industry is structured so that airlines often act as tax collectors. Airline fuel is untaxed because of a series of treaties existing between countries. Ticket prices include a number of fees, taxes and surcharges beyond the control of airlines. Airlines are also responsible for enforcing government regulations. If airlines carry passengers without proper documentation on an international flight, they are responsible for returning them back to the original country.
Since airline reservation requests are often made by city-pair (such as "show me flights from Chicago to Düsseldorf"), an airline that can codeshare with another airline for a variety of routes might be able to be listed as indeed offering a Chicago–Düsseldorf flight. The passenger is advised however, that airline no. 1 operates the flight from say Chicago to Amsterdam, and airline no. 2 operates the continuing flight (on a different airplane, sometimes from another terminal) to Düsseldorf. Thus the primary rationale for code sharing is to expand one's service offerings in city-pair terms to increase sales. 
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