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Cheap flights from Washington, D.C. to San Antonio from $64

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to San Antonio departing on 1/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Washington, D.C. to San Antonio

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
5:50 am - 4:40 pmBWI-SAT
11h 50m1 stop
Frontier Logo
7:38 pm - 8:23 amSAT-BWI
11h 45m1 stop
$130Frontier
Find Deal
Mon, Nov 17 - Thu, Nov 20
Frontier Logo
6:00 am - 4:43 pmBWI-SAT
11h 43m1 stop
Frontier Logo
7:34 pm - 7:47 amSAT-BWI
11h 13m1 stop
$138Frontier
Find Deal
Fri, Jan 9 - Sun, Jan 11
American Airlines Logo
3:41 pm - 10:58 pmBWI-SAT
8h 17m1 stop
American Airlines Logo
5:00 pm - 11:21 pmSAT-BWI
5h 21m1 stop
$179American Airlines
Find Deal
Thu, Jan 15 - Mon, Jan 19
American Airlines Logo
6:17 am - 12:18 pmBWI-SAT
7h 01m1 stop
American Airlines Logo
9:30 am - 11:10 pmSAT-BWI
12h 40m1 stop
$225American Airlines
Find Deal
Wed, Jan 14 - Tue, Jan 20
United Airlines Logo
12:45 pm - 5:47 pmIAD-SAT
6h 02m1 stop
United Airlines Logo
7:20 am - 11:31 amSAT-IAD
3h 11mnonstop
$259United Airlines
Find Deal
Thu, Dec 4 - Mon, Dec 8
United Airlines Logo
4:17 pm - 10:27 pmDCA-SAT
7h 10m1 stop
United Airlines Logo
5:30 am - 11:29 amSAT-DCA
4h 59m1 stop
$264United Airlines
Find Deal
Wed, Nov 26 - Thu, Nov 27
Southwest Logo
6:10 am - 11:05 amDCA-SAT
5h 55m1 stop
Southwest Logo
2:45 pm - 8:25 pmSAT-DCA
4h 40m1 stop
$267Southwest
Find Deal
Fri, Jan 16 - Mon, Jan 19
Delta Logo
6:59 am - 1:43 pmDCA-SAT
7h 44m1 stop
Delta Logo
5:00 pm - 11:40 pmSAT-DCA
5h 40m1 stop
$269Delta
Find Deal
Fri, Dec 12 - Fri, Dec 19
Delta Logo
5:59 pm - 11:17 pmIAD-SAT
6h 18m1 stop
Delta Logo
4:25 pm - 11:08 pmSAT-IAD
5h 43m1 stop
$269Delta
Find Deal
Fri, Dec 12 - Fri, Dec 19
Southwest Logo
6:05 am - 3:35 pmDCA-SAT
10h 30m1 stop
Southwest Logo
10:15 am - 4:00 pmSAT-DCA
4h 45m1 stop
$270Southwest
Find Deal
Mon, Jan 19 - Wed, Jan 21

Frontier flights from Washington, D.C. to San Antonio

Our best Frontier deals on Washington, D.C. to San Antonio flight tickets
Frontier
Nov 17
BWI5:50 amBaltimore/Washington
11h 50m
1 stop
SAT4:40 pmSan Antonio
Nov 20
SAT7:38 pmSan Antonio
11h 45m
1 stop
BWI8:23 amBaltimore/Washington
$130
Find similar
Frontier
Jan 9
BWI6:00 amBaltimore/Washington
11h 43m
1 stop
SAT4:43 pmSan Antonio
Jan 11
SAT7:34 pmSan Antonio
11h 13m
1 stop
BWI7:47 amBaltimore/Washington
$138
Find similar
Frontier
Dec 12
BWI5:45 amBaltimore/Washington
12h 06m
1 stop
SAT4:51 pmSan Antonio
Dec 14
SAT8:50 amSan Antonio
21h 52m
1 stop
BWI7:42 amBaltimore/Washington
$139
Find similar

American Airlines flights from Washington, D.C. to San Antonio

Our best American Airlines deals on Washington, D.C. to San Antonio flight tickets
American Airlines
Jan 15
BWI3:41 pmBaltimore/Washington
8h 17m
1 stop
SAT10:58 pmSan Antonio
Jan 19
SAT5:00 pmSan Antonio
5h 21m
1 stop
BWI11:21 pmBaltimore/Washington
$179
Find similar
American Airlines
Jan 14
BWI6:17 amBaltimore/Washington
7h 01m
1 stop
SAT12:18 pmSan Antonio
Jan 20
SAT9:30 amSan Antonio
12h 40m
1 stop
BWI11:10 pmBaltimore/Washington
$225
Find similar
American Airlines
Dec 2
BWI7:25 pmBaltimore/Washington
6h 03m
1 stop
SAT12:28 amSan Antonio
Dec 9
SAT2:42 pmSan Antonio
6h 31m
1 stop
BWI10:13 pmBaltimore/Washington
$227
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. to San Antonio that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated November 4, 2025.
Use the filters below to find and compare flights from Washington, D.C. to San Antonio that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BaltimoreSan Antonio

BWI - SAT

BWISAT

Baltimore/Washington

Mon 11/17

5:50 am-4:40 pm

1 stop11h 50m

San Antonio

Thu 11/20

7:38 pm-8:23 am

1 stop11h 45m

$130

BaltimoreSan Antonio

BWI - SAT

BWISAT

Baltimore/Washington

Fri 1/9

6:00 am-4:43 pm

1 stop11h 43m

San Antonio

Sun 1/11

7:34 pm-7:47 am

1 stop11h 13m

$138

BaltimoreSan Antonio

BWI - SAT

BWISAT

Baltimore/Washington

Thu 1/15

3:41 pm-10:58 pm

1 stop8h 17m

San Antonio

Mon 1/19

5:00 pm-11:21 pm

1 stop5h 21m

$179

BaltimoreSan Antonio

BWI - SAT

BWISAT

Baltimore/Washington

Wed 1/14

6:17 am-12:18 pm

1 stop7h 01m

San Antonio

Tue 1/20

9:30 am-11:10 pm

1 stop12h 40m

$225

Washington, D.C.San Antonio

IAD - SAT

IADSAT

Washington, D.C. Dulles Intl

Thu 12/4

12:45 pm-5:47 pm

1 stop6h 02m

San Antonio

Mon 12/8

7:20 am-11:31 am

Nonstop3h 11m

$259

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Wed 11/26

4:17 pm-10:27 pm

1 stop7h 10m

San Antonio

Thu 11/27

5:30 am-11:29 am

1 stop4h 59m

$264

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Fri 1/16

6:10 am-11:05 am

1 stop5h 55m

San Antonio

Mon 1/19

2:45 pm-8:25 pm

1 stop4h 40m

$267

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Fri 12/12

6:59 am-1:43 pm

1 stop7h 44m

San Antonio

Fri 12/19

5:00 pm-11:40 pm

1 stop5h 40m

$269

Washington, D.C.San Antonio

IAD - SAT

IADSAT

Washington, D.C. Dulles Intl

Fri 12/12

5:59 pm-11:17 pm

1 stop6h 18m

San Antonio

Fri 12/19

4:25 pm-11:08 pm

1 stop5h 43m

$269

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Mon 1/19

6:05 am-3:35 pm

1 stop10h 30m

San Antonio

Wed 1/21

10:15 am-4:00 pm

1 stop4h 45m

$270

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to San Antonio from

How to get the cheapest flight ticket from Washington, D.C. to San Antonio

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Washington, D.C. and San Antonio?

What is the cheapest month to fly to San Antonio?

If you aren’t able to travel during the month of August, then book flights to San Antonio from Washington, D.C. during July instead. Flights to San Antonio in July, while not as cheap as those in August, still average around $328.

What is the cheapest day to depart on your flight to San Antonio?

The cheapest day to depart on your flight to San Antonio is on a Wednesday when prices can be found for as low as $346. This is often the case because there is less demand to fly during this day of the week. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to San Antonio on Sunday is $505.

What is the cheapest time of day to depart on your flight to San Antonio?

According to our data, the cheapest time of day to fly to San Antonio is in the evening. momondo users have found flights departing from Washington, D.C. to San Antonio in the evening for as low as $316. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to San Antonio are more costly in the afternoon, with an average ticket price of $416. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Washington, D.C. to San Antonio flight route?

Fly from Washington, D.C. Reagan-National to San Antonio for the best Washington, D.C. - San Antonio flight prices

How far in advance should I book a flight to San Antonio?

You are more likely to see cheaper flights to San Antonio from Washington, D.C. when booking weeks ahead of your departure date. In general, you can expect to find flights to San Antonio for around $394 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Antonio from Washington, D.C. for as low as $309 on momondo.

What cabin class options are available on Washington, D.C. to San Antonio flights?

There are 4 cabin classes available to choose from on Washington, D.C. to San Antonio flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Washington, D.C. to San Antonio flights?

You could potentially save up to 23% on your flight if you consider stops on a Washington, D.C. to San Antonio flight.

How have Washington, D.C. to San Antonio flight prices changed over time?

As of November 2025, prices for Washington, D.C. to San Antonio flights are approximately 150% more expensive when compared to flights at the same time last year.

When to book flights from Washington, D.C. to San Antonio

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. to San Antonio according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Washington, D.C. to San Antonio (WAS to SAT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to San Antonio

Best Price Found

$148

Fastest flight time

3h 21m

Direct flights

Every day

Airports in San Antonio

1 airport
The best one-way flight to San Antonio from Washington, D.C. in the past 72 hours is $148. The best round-trip flight deal from Washington, D.C. to San Antonio found on momondo in the last 72 hours is $322.
The fastest flight from Washington, D.C. to San Antonio takes 3h 21m
Direct flights go from Washington, D.C. to San Antonio every day.
There is 1 airport near San Antonio: San Antonio (SAT)
Search flight deals

  • How far is Washington, D.C. to San Antonio by plane?

    San Antonio is 1384.8 mi away from Washington, D.C.. A reasonable flight in good conditions will take 3h 50m.

  • When did momondo last update prices for flights from Washington, D.C. to San Antonio Airport?

    Prices for flights from Washington, D.C. to San Antonio Airport were last updated today.

  • How many operators does momondo search for flights from Washington, D.C. to San Antonio Airport?

  • How old do you have to be to fly from Washington, D.C. to San Antonio Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. to San Antonio Airport.

  • What documentation or ID do you need to fly to San Antonio Airport?

    The necessary travel and health documents for your San Antonio Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Washington, D.C. to San Antonio?

  • What is the most popular airline from Washington, D.C. to San Antonio?

Best airlines flying from Washington, D.C. to San Antonio

Compare and see reviews for airlines that fly from Washington, D.C. to San Antonio with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $86Free CancellationRating
5.8
3,116 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $114Free CancellationRating
6.3
8,113 reviews
Search Spirit Airlines flights
American AirlinesPriceFrom $158Free CancellationRating
7.2
11,038 reviews
Search American Airlines flights
SouthwestPriceFrom $181Free CancellationRating
8.0
4,237 reviews
Search Southwest flights
DeltaPriceFrom $236Free CancellationRating
7.9
8,002 reviews
Search Delta flights
United AirlinesPriceFrom $240Free CancellationRating
7.4
8,998 reviews
Search United Airlines flights

  • Southwest Flights From Washington, D.C. to San Antonio

    Southwest is one of the most popular airlines flying from Washington, D.C. to San Antonio, operating 3 flights/week on average for this route. A good Southwest flight deal for Washington, D.C. to San Antonio starts from $181 round-trip, up to an average price of $398. Our users have rated Southwest at 8.0/10.

  • United Airlines Flights From Washington, D.C. to San Antonio

    The best United Airlines deal for Washington, D.C. to San Antonio flight tickets found on momondo in the last 72 hours was $240, round-trip. It should be noted that an average United Airlines flight deal for this route in this time was higher, at $387 round-trip. United Airlines operates 14 flights out of Washington, D.C. into San Antonio in an average week, so prices vary by time and availability. 8,998 United Airlines reviews by users on momondo have scored the airline at 7.4/10.

Traveling to a place near San Antonio?

Book flights to San Antonio if you plan to visit one of these locations
New Braunfels
Boerne
Kerrville
Schertz
Pleasanton

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to San Antonio?

Finding the right flight to San Antonio from Washington, D.C. is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to San Antonio quick and easy, saving you time and money.

Can I find flights from Washington, D.C. to San Antonio with flexible booking policies on momondo?

Yes. All flights to San Antonio from Washington, D.C. on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Washington, D.C. to San Antonio?

Once all potential Washington, D.C. to San Antonio flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Washington, D.C. to San Antonio right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Washington, D.C. to San Antonio now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to San Antonio and let you know when they change.

An easier way to manage your San Antonio trip

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