The Southwest Airlines ATH Terminal is a frequently asked question, although the airline does not operate flights to Athens International Airport (ATH). Prioritizing U.S. routes, this airline also serves adjacent overseas destinations, such as Mexico and the Caribbean. There is no Southwest terminal at ATH because it does not provide flights to Europe. A different international airline should be booked by those who wish to visit Greece. You can still get to a U.S. hub airport with Southwest before taking a different airline to Athens. visit us-- https://www.airportsterminalnearme.com/southwest-airlines/southwest-airlines-ath-terminal-athens-international-airport/