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Cheap flights from Washington, D.C. to San Antonio from $78

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 10/6. 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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0 bags

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Find the cheapest flights from Washington, D.C. to San Antonio

Cheap round-trip flights

Frontier Logo
6:22 am - 4:35 pmBWI-SAT
11h 13m1 stop
Frontier Logo
5:40 pm - 12:53 amSAT-BWI
6h 13m1 stop
$143Frontier
Find Deal
Fri, Oct 3 - Mon, Oct 6
Frontier Logo
6:22 am - 4:30 pmBWI-SAT
11h 08m1 stop
Frontier Logo
11:33 am - 7:10 pmSAT-BWI
6h 37m1 stop
$144Frontier
Find Deal
Mon, Sep 29 - Thu, Oct 2
United Airlines Logo
12:25 pm - 7:41 pmBWI-SAT
8h 16m1 stop
United Airlines Logo
9:50 am - 4:06 pmSAT-BWI
5h 16m1 stop
$167United Airlines
Find Deal
Fri, Jan 30 - Sat, Jan 31
United Airlines Logo
5:18 pm - 11:13 pmBWI-SAT
6h 55m1 stop
United Airlines Logo
9:50 am - 9:41 pmSAT-BWI
10h 51m2 stops
$172United Airlines
Find Deal
Tue, Jan 27 - Sat, Jan 31
Delta Logo
6:00 am - 11:50 amBWI-SAT
6h 50m1 stop
Delta Logo
12:23 pm - 6:40 pmSAT-BWI
5h 17m1 stop
$237Delta
Find Deal
Thu, Oct 30 - Thu, Nov 6
Southwest Logo
2:40 pm - 6:55 pmDCA-SAT
5h 15m1 stop
Southwest Logo
6:50 am - 12:35 pmSAT-DCA
4h 45m1 stop
$248Southwest
Find Deal
Wed, Nov 12 - Wed, Nov 19
American Airlines Logo
7:59 pm - 10:56 pmDCA-SAT
3h 57mnonstop
American Airlines Logo
6:50 am - 10:59 amSAT-DCA
3h 09mnonstop
$249American Airlines
Find Deal
Sat, Nov 1 - Tue, Nov 4
American Airlines Logo
7:59 pm - 10:56 pmDCA-SAT
3h 57mnonstop
American Airlines Logo
6:50 am - 10:59 amSAT-DCA
3h 09mnonstop
$251American Airlines
Find Deal
Thu, Oct 30 - Thu, Nov 6
Southwest Logo
2:40 pm - 6:55 pmDCA-SAT
5h 15m1 stop
Southwest Logo
3:00 pm - 8:45 pmSAT-DCA
4h 45m1 stop
$254Southwest
Find Deal
Tue, Nov 11 - Fri, Nov 14
Delta Logo
6:19 am - 10:40 amDCA-SAT
5h 21m1 stop
Delta Logo
5:25 am - 11:47 amSAT-DCA
5h 22m1 stop
$257Delta
Find Deal
Wed, Oct 22 - Wed, Oct 29

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

Our best Frontier deals on Washington, D.C. to San Antonio flight tickets
Frontier
Oct 3
BWI6:22 amBaltimore/Washington
11h 13m
1 stop
SAT4:35 pmSan Antonio
Oct 6
SAT5:40 pmSan Antonio
6h 13m
1 stop
BWI12:53 amBaltimore/Washington
$143
Find similar
Frontier
Sep 29
BWI6:22 amBaltimore/Washington
11h 08m
1 stop
SAT4:30 pmSan Antonio
Oct 2
SAT11:33 amSan Antonio
6h 37m
1 stop
BWI7:10 pmBaltimore/Washington
$144
Find similar
Frontier
Sep 29
BWI6:22 amBaltimore/Washington
11h 08m
1 stop
SAT4:30 pmSan Antonio
Oct 6
SAT5:40 pmSan Antonio
6h 13m
1 stop
BWI12:53 amBaltimore/Washington
$152
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
Nov 1
DCA7:59 pmWashington, D.C. Reagan-National
3h 57m
SAT10:56 pmSan Antonio
Nov 4
SAT6:50 amSan Antonio
3h 09m
DCA10:59 amWashington, D.C. Reagan-National
$249
Find similar
American Airlines
Oct 30
DCA7:59 pmWashington, D.C. Reagan-National
3h 57m
SAT10:56 pmSan Antonio
Nov 6
SAT6:50 amSan Antonio
3h 09m
DCA10:59 amWashington, D.C. Reagan-National
$251
Find similar
American Airlines
Nov 5
DCA7:59 pmWashington, D.C. Reagan-National
4h 06m
SAT11:05 pmSan Antonio
Nov 27
SAT6:00 amSan Antonio
9h 29m
1 stop
DCA4:29 pmWashington, D.C. Reagan-National
$276
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 September 17, 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

Fri 10/3

6:22 am-4:35 pm

1 stop11h 13m

San Antonio

Mon 10/6

5:40 pm-12:53 am

1 stop6h 13m

$143

BaltimoreSan Antonio

BWI - SAT

BWISAT

Baltimore/Washington

Mon 9/29

6:22 am-4:30 pm

1 stop11h 08m

San Antonio

Thu 10/2

11:33 am-7:10 pm

1 stop6h 37m

$144

BaltimoreSan Antonio

BWI - SAT

BWISAT

Baltimore/Washington

Fri 1/30

12:25 pm-7:41 pm

1 stop8h 16m

San Antonio

Sat 1/31

9:50 am-4:06 pm

1 stop5h 16m

$167

BaltimoreSan Antonio

BWI - SAT

BWISAT

Baltimore/Washington

Tue 1/27

5:18 pm-11:13 pm

1 stop6h 55m

San Antonio

Sat 1/31

9:50 am-9:41 pm

2 stops10h 51m

$172

BaltimoreSan Antonio

BWI - SAT

BWISAT

Baltimore/Washington

Thu 10/30

6:00 am-11:50 am

1 stop6h 50m

San Antonio

Thu 11/6

12:23 pm-6:40 pm

1 stop5h 17m

$237

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Wed 11/12

2:40 pm-6:55 pm

1 stop5h 15m

San Antonio

Wed 11/19

6:50 am-12:35 pm

1 stop4h 45m

$248

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Sat 11/1

7:59 pm-10:56 pm

Nonstop3h 57m

San Antonio

Tue 11/4

6:50 am-10:59 am

Nonstop3h 09m

$249

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Thu 10/30

7:59 pm-10:56 pm

Nonstop3h 57m

San Antonio

Thu 11/6

6:50 am-10:59 am

Nonstop3h 09m

$251

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Tue 11/11

2:40 pm-6:55 pm

1 stop5h 15m

San Antonio

Fri 11/14

3:00 pm-8:45 pm

1 stop4h 45m

$254

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Wed 10/22

6:19 am-10:40 am

1 stop5h 21m

San Antonio

Wed 10/29

5:25 am-11:47 am

1 stop5h 22m

$257

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 Tuesday when prices can be found for as low as $358. 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 $517.

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 $317. 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 morning, with an average ticket price of $430. Departure times in the morning 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 $402 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 10% 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 September 2025, prices for Washington, D.C. to San Antonio flights are approximately 158% 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 30m

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 $283.
The fastest flight from Washington, D.C. to San Antonio takes 3h 30m
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 32m.

  • 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
3,173 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $114Free CancellationRating
6.3
8,023 reviews
Search Spirit Airlines flights
American AirlinesPriceFrom $158Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $181Free CancellationRating
8.0
4,242 reviews
Search Southwest flights
DeltaPriceFrom $238Free CancellationRating
7.9
7,961 reviews
Search Delta flights
United AirlinesPriceFrom $240Free CancellationRating
7.4
8,926 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 5 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 $390. 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 $400 round-trip. United Airlines operates 12 flights out of Washington, D.C. into San Antonio in an average week, so prices vary by time and availability. 8,926 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
Kerrville
Boerne
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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