$166 Find Cheap Flights from Washington Dulles Airport to San Antonio - Compare and Save

If your flying dates are flexible, you should consider flying to San Antonio on a Wednesday, as we generally find the cheapest rates on that day for this route. On the other hand, Monday is the most expensive day to fly from Washington Dulles Airport to San Antonio. For your return ticket, we recommend flying on a Thursday and avoiding Mondays for the best deals.

The cheapest month for flights from Washington, D.C. Dulles Intl Airport to San Antonio is September, where tickets cost $333 (return) on average. On the other hand, the most expensive months are May and June, where the average cost of round-trip tickets is $479 and $451 respectively.

No, with an average price for the route of $377, prices are generally cheapest when you fly direct.

To get a below average price on the flight from Washington, D.C. Dulles Intl Airport to San Antonio, you should book around 4 weeks before departure, which saves you about 30% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.

In the past 5 days, the cheapest round-trip tickets from Washington Dulles Airport to San Antonio were found on Frontier ($309) and United Airlines ($314).

There is just one airline that flies from Washington, D.C. Dulles Intl Airport to San Antonio direct and that is United Airlines. The best round-trip deal found from United Airlines for the route is $249.

Atlanta (ATL) is the top choice – 53% of KAYAK users who clicked on 1-stop flights from Washington Dulles Airport to San Antonio picked an itinerary connecting there.

Flights via Las Vegas (LAS) offer the most affordable fares, with an average round-trip price of $290.

Consider flying via Dallas (DFW) for the shortest journey. The average one-way travel time for flights connecting there is 5h 19m.

If you prefer a quick connection, Dallas (DFW) often has the shortest layovers from Washington Dulles Airport to San Antonio, with an average of 0h 53m.

There are 4 cabin class options for the route. These are First, Business, Economy and Prem Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

Each day, there are 2 nonstop flights that take off from Washington, D.C. Dulles Intl Airport and land in San Antonio, with an average flight time of 3h 37m. The most common departure time is 8:00 am and most flights take off in the morning. Each week, there are 14 flights and there are the same amount of flights each day (2).