They have to if they want a holiday here in England.
American Airlines uses Terminal 3 at Heathrow Airport.
Airlines that operate out of the United Heathrow Terminal include United Airlines, Air Canada, and Lufthansa.
American Airlines is located at Terminal 3 at Heathrow Airport.
American Airlines operates from Terminal 3 at Heathrow Airport.
Terminal 5 is mostly used by British Airways but the others have no particular airlines using them.
American Airlines operates from Terminals 2 and 5 at Heathrow Airport.
American Airlines flights depart from Terminal 3 at Heathrow Airport.
Numerous airlines fly from Heathrow to Austrailia, from different terminals.
There are many flights to Seattle to Heathrow. There are many airlines that has flights to Seattle from Heathrow. Some airlines that has flights to Seattle from Heathrow are One2One, British Airways, Travel Up, and ComeFli.
T4.
Delta uses Heathrow terminal T4.
Delta lands at Heathrow T4.