Computers also allow airlines to predict, with some accuracy, how many passengers will actually fly after making a reservation to fly. This allows airlines to overbook their flights enough to fill the aircraft while accounting for "no-shows", but not enough (in most cases) to force paying passengers off the aircraft for lack of seats, stimulative pricing for low demand flights coupled with overbooking on high demand flights can help reduce this figure. This is especially crucial during tough economic times as airlines undertake massive cuts to ticket prices to retain demand.[65]

Each transaction may only purchase a total of 9 tickets (not including infant tickets) and must contain at least 1 adult (over 16 years old), each adult may only bring 1 infant (Infant does not occupy a seat, and must be under the age of 2 while traveling.) and 1 child, or at most 3 children. Please contact our reservation & ticketing staff if you wish to book a child or infant ticket only.

On March 31, 2011, Hawaiian announced that they will be renovating the check-in lobby of the inter-island terminal at the Honolulu International Airport (Hawaiian's main hub). Hawaiian, the only occupant of the inter-island terminal, will be removing the traditional check-in counter, to install six circular check-in islands in the middle of the lobbies. Those check-in islands can be used for inter-island, mainland, and international flights.[38]

Congress passed the Air Transportation Safety and System Stabilization Act (P.L. 107-42) in response to a severe liquidity crisis facing the already-troubled airline industry in the aftermath of the September 11th terrorist attacks. Through the ATSB Congress sought to provide cash infusions to carriers for both the cost of the four-day federal shutdown of the airlines and the incremental losses incurred through December 31, 2001, as a result of the terrorist attacks. This resulted in the first government bailout of the 21st century.[44] Between 2000 and 2005 US airlines lost $30 billion with wage cuts of over $15 billion and 100,000 employees laid off.[45]
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.