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Cheap flights from Washington, D.C. to San Antonio from $55

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 9/20. 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

Spirit Airlines Logo
5:45 am - 7:32 pmBWI-SAT
14h 47m1 stop
Spirit Airlines Logo
8:37 pm - 7:01 amSAT-BWI
9h 24m1 stop
$143Spirit Airlines
Find Deal
Sat, Sep 13 - Sat, Sep 20
Logo
5:45 am - 7:32 pmBWI-SAT
14h 47m1 stop
Logo
5:40 pm - 12:17 amSAT-BWI
5h 37m1 stop
$152
Find Deal
Sat, Sep 13 - Mon, Sep 15
Delta Logo
6:00 am - 10:32 amDCA-SAT
5h 32m1 stop
Delta Logo
2:00 pm - 8:42 pmSAT-DCA
5h 42m1 stop
$237Delta
Find Deal
Wed, Sep 10 - Wed, Sep 17
Delta Logo
6:00 am - 11:10 amIAD-SAT
6h 10m1 stop
Delta Logo
5:10 am - 11:28 amSAT-IAD
5h 18m1 stop
$237Delta
Find Deal
Wed, Sep 10 - Wed, Sep 17
Southwest Logo
8:15 am - 12:35 pmDCA-SAT
5h 20m1 stop
Southwest Logo
11:55 am - 8:30 pmSAT-DCA
7h 35m2 stops
$242Southwest
Find Deal
Wed, Nov 5 - Tue, Nov 11
United Airlines Logo
5:55 pm - 8:33 pmIAD-SAT
3h 38mnonstop
United Airlines Logo
7:00 am - 11:19 amSAT-IAD
3h 19mnonstop
$249United Airlines
Find Deal
Fri, Sep 5 - Mon, Sep 8
American Airlines Logo
7:59 pm - 10:36 pmDCA-SAT
3h 37mnonstop
American Airlines Logo
6:35 am - 10:55 amSAT-DCA
3h 20mnonstop
$249American Airlines
Find Deal
Sat, Sep 13 - Mon, Sep 15
Southwest Logo
6:00 am - 12:15 pmDCA-SAT
7h 15m2 stops
Southwest Logo
5:25 am - 2:25 pmSAT-DCA
8h 00m2 stops
$254Southwest
Find Deal
Tue, Sep 30 - Thu, Oct 2
United Airlines Logo
10:45 am - 5:54 pmIAD-SAT
8h 09m1 stop
United Airlines Logo
7:00 am - 11:19 amSAT-IAD
3h 19mnonstop
$259United Airlines
Find Deal
Fri, Oct 3 - Sat, Oct 4
American Airlines Logo
7:59 pm - 10:36 pmDCA-SAT
3h 37mnonstop
American Airlines Logo
6:35 am - 10:49 amSAT-DCA
3h 14mnonstop
$263American Airlines
Find Deal
Tue, Sep 30 - Sat, Oct 11

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

Our best Spirit Airlines deals on Washington, D.C. to San Antonio flight tickets
Spirit Airlines
Sep 13
BWI5:45 amBaltimore/Washington
14h 47m
1 stop
SAT7:32 pmSan Antonio
Sep 20
SAT8:37 pmSan Antonio
9h 24m
1 stop
BWI7:01 amBaltimore/Washington
$143
Find similar
Spirit Airlines
Sep 5
BWI8:16 amBaltimore/Washington
9h 31m
1 stop
SAT4:47 pmSan Antonio
Sep 13
SAT8:37 pmSan Antonio
9h 24m
1 stop
BWI7:01 amBaltimore/Washington
$157
Find similar
Spirit Airlines
Aug 29
BWI6:30 amBaltimore/Washington
8h 23m
1 stop
SAT1:53 pmSan Antonio
Aug 31
SAT3:18 pmSan Antonio
12h 57m
1 stop
BWI5:15 amBaltimore/Washington
$185
Find similar

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

Our best Delta deals on Washington, D.C. to San Antonio flight tickets
Delta
Sep 10
DCA6:00 amWashington, D.C. Reagan-National
5h 32m
1 stop
SAT10:32 amSan Antonio
Sep 17
SAT2:00 pmSan Antonio
5h 42m
1 stop
DCA8:42 pmWashington, D.C. Reagan-National
$237
Find similar
Delta
Sep 17
DCA9:40 amWashington, D.C. Reagan-National
6h 56m
1 stop
SAT3:36 pmSan Antonio
Sep 22
SAT1:37 pmSan Antonio
7h 07m
1 stop
DCA9:44 pmWashington, D.C. Reagan-National
$244
Find similar
Delta
Sep 13
DCA7:00 amWashington, D.C. Reagan-National
5h 19m
1 stop
SAT11:19 amSan Antonio
Sep 18
SAT1:27 pmSan Antonio
5h 03m
1 stop
DCA7:30 pmWashington, D.C. Reagan-National
$251
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 August 18, 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

Sat 9/13

5:45 am-7:32 pm

1 stop14h 47m

San Antonio

Sat 9/20

8:37 pm-7:01 am

1 stop9h 24m

$143

BaltimoreSan Antonio

BWI - SAT

BWISAT

Baltimore/Washington

Sat 9/13

5:45 am-7:32 pm

1 stop14h 47m

San Antonio

Mon 9/15

5:40 pm-12:17 am

1 stop5h 37m

$152

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Wed 9/10

6:00 am-10:32 am

1 stop5h 32m

San Antonio

Wed 9/17

2:00 pm-8:42 pm

1 stop5h 42m

$237

Washington, D.C.San Antonio

IAD - SAT

IADSAT

Washington, D.C. Dulles Intl

Wed 9/10

6:00 am-11:10 am

1 stop6h 10m

San Antonio

Wed 9/17

5:10 am-11:28 am

1 stop5h 18m

$237

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Wed 11/5

8:15 am-12:35 pm

1 stop5h 20m

San Antonio

Tue 11/11

11:55 am-8:30 pm

2 stops7h 35m

$242

Washington, D.C.San Antonio

IAD - SAT

IADSAT

Washington, D.C. Dulles Intl

Fri 9/5

5:55 pm-8:33 pm

Nonstop3h 38m

San Antonio

Mon 9/8

7:00 am-11:19 am

Nonstop3h 19m

$249

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Sat 9/13

7:59 pm-10:36 pm

Nonstop3h 37m

San Antonio

Mon 9/15

6:35 am-10:55 am

Nonstop3h 20m

$249

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Tue 9/30

6:00 am-12:15 pm

2 stops7h 15m

San Antonio

Thu 10/2

5:25 am-2:25 pm

2 stops8h 00m

$254

Washington, D.C.San Antonio

IAD - SAT

IADSAT

Washington, D.C. Dulles Intl

Fri 10/3

10:45 am-5:54 pm

1 stop8h 09m

San Antonio

Sat 10/4

7:00 am-11:19 am

Nonstop3h 19m

$259

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Tue 9/30

7:59 pm-10:36 pm

Nonstop3h 37m

San Antonio

Sat 10/11

6:35 am-10:49 am

Nonstop3h 14m

$263

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 $363. 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 $496.

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 morning, with an average ticket price of $431. 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 $405 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 $283 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?

No. A direct flight is the cheapest option for a flight between Washington, D.C. to San Antonio.

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

As of August 2025, prices for Washington, D.C. to San Antonio flights are approximately 194% 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

$55

Fastest flight time

3h 31m

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 $55. The best round-trip flight deal from Washington, D.C. to San Antonio found on momondo in the last 72 hours is $143.
The fastest flight from Washington, D.C. to San Antonio takes 3h 31m
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 31m.

  • 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
3,212 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $117Free CancellationRating
6.3
8,038 reviews
Search Spirit Airlines flights
American AirlinesPriceFrom $158Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $196Free CancellationRating
8.0
4,246 reviews
Search Southwest flights
DeltaPriceFrom $238Free CancellationRating
8.0
7,981 reviews
Search Delta flights
United AirlinesPriceFrom $251Free CancellationRating
7.4
8,925 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 4 flights/week on average for this route. A good Southwest flight deal for Washington, D.C. to San Antonio starts from $196 round-trip, up to an average price of $394. 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 $251, round-trip. It should be noted that an average United Airlines flight deal for this route in this time was higher, at $414 round-trip. United Airlines operates 6 flights out of Washington, D.C. into San Antonio in an average week, so prices vary by time and availability. 8,925 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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