Flights from Washington DC to San Antonio

Our cheapest offers for flights from Washington DC to San Antonio

Here you can compare cheap flights from Washington DC (IAD) to San Antonio (SAT) for one-way or return trips. The following offers were searched for and found on idealo during the last few days. Or start your own flight search to San Antonio. Prices and availability may change at any time.

Outbound Return Airlines Shop Baggage Price
Washington DC
San Antonio
Outbound
10/18/25
1 Stopover (MCO)
F94811, F91653
20h 07min
Return
11/17/25
1 Stopover (ATL)
F94810, F91082
05h 31min
Frontier Airlines
$269
Best option
Washington DC
San Antonio
Outbound
10/18/25
direct
UA1789
03h 31min
Return
11/17/25
direct
UA2250
03h 10min
United Airlines ?
$305
Washington DC
San Antonio
Outbound
10/18/25
1 Stopover (MCO)
F94811, F91653
20h 07min
Return
11/17/25
1 Stopover (ATL)
F94810, F91082
05h 31min
Frontier Airlines
$280
Washington DC
San Antonio
Outbound
10/18/25
direct
UA1789
03h 31min
Return
11/17/25
direct
UA0471
03h 10min
United Airlines
$320
Washington DC
San Antonio
Outbound
10/18/25
1 Stopover (DFW)
AA1863, AA1684
06h 20min
Return
11/17/25
1 Stopover (DFW)
AA2616, AA0524
04h 39min
American Airlines ?
$353
Washington DC
San Antonio
Outbound
10/18/25
1 Stopover (DFW)
AA0524, AA1353
06h 11min
Return
11/17/25
1 Stopover (CLT)
AA2934, AA5549
04h 46min
American Airlines ?
$416
Washington DC
San Antonio
Outbound
09/23/25
1 Stopover (SEA)
AS0375, AS0449
10h 46min
Return
09/30/25
1 Stopover (SEA)
AS0404, AS0367
10h 50min
Alaska Airlines ?
$439
Washington DC
San Antonio
Outbound
10/18/25
direct
UA1789
03h 31min
Return
11/17/25
direct
UA2250
03h 10min
United Airlines ?
$812
Washington DC
San Antonio
Outbound
10/09/25
direct
UA1789
03h 31min
Return
11/01/25
direct
UA2250
03h 10min
United Airlines ?
$868
Prices based on recent searches, subject to last-minute changes
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Tips and tricks to help you find cheap flights from Washington DC to San Antonio

Favorite airline: United Airlines
The favorite airline for flights from Washington DC to San Antonio is United Airlines.
United Airlines
73 %
Delta
18 %
American Airlines
5 %
Stopover flights are the cheapest connection
Compared to flights with a stopover, direct flights are $32.00 more expensive on this route.
non stop flight
1 stop
03h 28min
05h 23min
$272
$240
The favorite connection is non-stop
Flights from Washington DC to San Antonio are most often booked as a direct flight.
Route
bookings
Direct flights
03h 28min, from $272
78 %
1 stopover Hartsfield-Jackson Atlanta International Airport, GA
05h 23min, from $240
17 %
1 stopover Salt Lake City International Airport, UT
10h 55min, from $293
6 %

Important flight information

Flight information: Washington DC - San Antonio

Roundtrip from $268.30
Flight duration min. 03:42 / max. 03:55
Return flight duration min. 03:01/ max. 03:09
Distance 2192 km
Flights per week 16
Departure airport Airport Washington DC - Dulles International Airport, DC (IAD)
Arrival airport Airport San Antonio International Airport, TX (SAT)
Destination country Flights to United States
Alternative routes to United States
Alternative flights to San Antonio
Flight destinations with a similar price
Flight destinations with a similar price