Official site for United Airlines, commercial air carrier transporting people, property, and mail across the U.S. and worldwide.

Delta Airlines online ticket purchase, flight status information, and travel deals. Includes special offers on featured destinations, frequent flyer program, hotel reservations, and car rental.

Official site for Southwest Airlines, with flight schedules and fares, online reservations, special offers, frequent flyer information, and a travel planner featuring rental car and hotel reservations.

Official site of American Airlines, with reservations, flight schedules, ticket specials, travel planning, membership, and company news. Also operates the American Eagle regional airline network.

Shop for discounted airline tickets, hotel tooms, cruises, and rental cars at Hotwire. With special last-minute deals, featured destinations, and vacation packages.

User-edited article about the list of airlines in operation by continents and countries.

User-submitted list of airlines in operation that offer regular service to paying passengers from the general public.

Airport locator database of worldwide airport and airline links. Search by name, city or region, and code.

Also includes airline directories and other related web sites. ... Find Continental Airline current flight information, check flight status, or book an online airline ticket. ...