Southwest has round-trip flights from Austin (AUS) to Portland, Maine (PWM) for $174-$211 with a connection. Flights August to November. Extended weekends available. Origin/Destination reversible. No Thanksgiving dates.
Category: <span>Flights from San Antonio</span>
American Airlines has round-trip flights from San Antonio (SAT) to Amsterdam (AMS) for $579 with a connection. Flights June to September. Departures on Monday, Tuesday, Wednesday, and Sunday. 7-day minimum stay required.
American Airlines and United have round-trip flights from San Antonio (SAT) to Belize City or Costa Rica (BZE, LIR/SJO) for $300-$349 with a connection. Flights August to December. Very few extended weekends available. Origin/Destination reversible. No Christmas dates available.

Cheap Flights: San Antonio to Vail or Aspen, Colorado $229-$269 r/t [Jun, Aug-Jan, Mar-Apr] – United
United has round-trip flights from San Antonio (SAT) to Vail or Aspen, Colorado (EGE, ASE) for $229-$269 with a connection. Flights in June, August, September, October, November, December, January, March, and April. Very few weekends available. Holiday blackouts.
United and American Airlines have round-trip flights from Austin or San Antonio (AUS, SAT) to Tokyo or Osaka (HND/NRT, KIX) for $822-$885 with a connection. Flights August to April.
A Carry-on bag and also a personal item is allowed for free on American. You can avoid paying for seat selection by accepting the randomly assigned seat at the gate.
British Airways, Iberia, Finnair, American Airlines and various other airlines have round-trip flights from Austin or San Antonio (AUS, SAT) to Madrid (MAD) for $437-$450 with a connection. Flights September to February. 7-day minimum stay required.
Most Oneworld carriers have round-trip flights to various destinations in Europe at a discount today for $436-$640, mostly with a connection. Austin-London Nonstop. Dates vary, use the linked calendar. Cheapest fares are mostly midweek. Most fares are not reversible.
Notes: The exact ranges for each destination will vary. Use the Google calendar view to get an idea of what dates work.
Flights to smaller airports may require a long connection or two stops. When you begin your search, modify your filter to remove fares that have more than one connection, some of those smaller airports ONLY have flights with bad routing.
There is a good chance that other airlines will match these fares.
United and Southwest have round-trip flights from Austin and San Antonio (AUS, SAT) to Denver (DEN) for $135, NONSTOP. Flights May to November. Departures on Tuesday, Wednesday, and Saturday. Extended weekends available. Origin/Destination reversible. No Thanksgiving dates.
American Airlines and Delta have round-trip flights from San Antonio (SAT) to Los Angeles (LAX) for $179-$185, NONSTOP. Flights June to October. Departures on Tuesday, Wednesday, and Saturday. Extended weekends available. Origin/Destination reversible.
Southwest has round-trip flights from San Antonio (SAT) to Miami (MIA) for $137 with a connection. Flights May to July. Departures on Tuesday, Wednesday, and Saturday. Origin/Destination reversible.
British Airways, United, Delta, and Finnair have round-trip flights from Austin and San Antonio (AUS, SAT) to Rome (FCO) for $563-$617 with a connection. Flights October to March. Extended weekends available.
Actual carrier flown will depend on which airport you fly out of, Oneworld for AUS, Star Alliance/SkyTeam for SAT.
American Airlines has round-trip flights from San Antonio (SAT) to Dublin (DUB) for $492-$496 with a connection. Flights in August, October, November, and December. Departures on Monday, Tuesday, Wednesday, and Sunday. 7-day minimum stay required. Holiday blackouts.