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Cheap flights from Washington, D.C. Reagan-National Airport to San Antonio from $82

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. Reagan-National Airport to San Antonio departing on 12/15. 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. Reagan-National Airport to San Antonio

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
8:00 am - 6:58 pmDCA-SAT
11h 58m1 stop
Frontier Logo
10:25 am - 9:59 pmSAT-DCA
10h 34m1 stop
$257Frontier
Find Deal
Thu, Dec 11 - Sun, Dec 14
Frontier Logo
2:00 pm - 12:20 amDCA-SAT
11h 20m1 stop
Frontier Logo
1:50 pm - 1:03 pmSAT-DCA
22h 13m2 stops
$258Frontier
Find Deal
Fri, Nov 21 - Mon, Nov 24
Southwest Logo
2:40 pm - 6:55 pmDCA-SAT
5h 15m1 stop
Southwest Logo
6:50 am - 12:35 pmSAT-DCA
4h 45m1 stop
$260Southwest
Find Deal
Tue, Dec 9 - Wed, Dec 10
Southwest Logo
11:50 am - 5:00 pmDCA-SAT
6h 10m1 stop
Southwest Logo
6:50 am - 12:35 pmSAT-DCA
4h 45m1 stop
$264Southwest
Find Deal
Wed, Dec 3 - Wed, Dec 10
American Airlines Logo
6:38 pm - 11:47 pmDCA-SAT
6h 09m1 stop
American Airlines Logo
6:48 am - 11:00 amSAT-DCA
3h 12mnonstop
$268American Airlines
Find Deal
Thu, Dec 4 - Mon, Dec 8
Delta Logo
7:40 pm - 12:34 amDCA-SAT
5h 54m1 stop
Delta Logo
5:20 am - 11:37 amSAT-DCA
5h 17m1 stop
$269Delta
Find Deal
Tue, Dec 2 - Sun, Dec 7
United Airlines Logo
8:15 am - 3:53 pmDCA-SAT
8h 38m1 stop
United Airlines Logo
2:08 pm - 8:59 pmSAT-DCA
5h 51m1 stop
$277United Airlines
Find Deal
Thu, Dec 25 - Wed, Dec 31
United Airlines Logo
8:00 am - 1:13 pmDCA-SAT
6h 13m1 stop
United Airlines Logo
12:24 pm - 6:25 pmSAT-DCA
5h 01m1 stop
$278United Airlines
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Thu, Mar 26 - Tue, Mar 31
American Airlines Logo
7:59 pm - 11:05 pmDCA-SAT
4h 06mnonstop
American Airlines Logo
6:50 am - 10:59 amSAT-DCA
3h 09mnonstop
$279American Airlines
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Thu, Nov 20 - Tue, Dec 2
Delta Logo
8:20 am - 3:40 pmDCA-SAT
8h 20m1 stop
Delta Logo
5:10 am - 12:57 pmSAT-DCA
6h 47m1 stop
$282Delta
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Thu, Dec 25 - Thu, Jan 1

American Airlines flights from Washington, D.C. Reagan-National Airport to San Antonio

Our best American Airlines deals on Washington, D.C. Reagan-National Airport to San Antonio flight tickets
American Airlines
Dec 4
DCA6:38 pmWashington, D.C. Reagan-National
6h 09m
1 stop
SAT11:47 pmSan Antonio
Dec 8
SAT6:48 amSan Antonio
3h 12m
DCA11:00 amWashington, D.C. Reagan-National
$268
Find similar
American Airlines
Nov 20
DCA7:59 pmWashington, D.C. Reagan-National
4h 06m
SAT11:05 pmSan Antonio
Dec 2
SAT6:50 amSan Antonio
3h 09m
DCA10:59 amWashington, D.C. Reagan-National
$279
Find similar
American Airlines
Dec 13
DCA12:59 pmWashington, D.C. Reagan-National
8h 08m
1 stop
SAT8:07 pmSan Antonio
Dec 21
SAT6:51 amSan Antonio
3h 09m
DCA11:00 amWashington, D.C. Reagan-National
$289
Find similar

United Airlines flights from Washington, D.C. Reagan-National Airport to San Antonio

Our best United Airlines deals on Washington, D.C. Reagan-National Airport to San Antonio flight tickets
United Airlines
Dec 25
DCA8:15 amWashington, D.C. Reagan-National
8h 38m
1 stop
SAT3:53 pmSan Antonio
Dec 31
SAT2:08 pmSan Antonio
5h 51m
1 stop
DCA8:59 pmWashington, D.C. Reagan-National
$277
Find similar
United Airlines
Mar 26
DCA8:00 amWashington, D.C. Reagan-National
6h 13m
1 stop
SAT1:13 pmSan Antonio
Mar 31
SAT12:24 pmSan Antonio
5h 01m
1 stop
DCA6:25 pmWashington, D.C. Reagan-National
$278
Find similar
United Airlines
Nov 20
DCA8:15 amWashington, D.C. Reagan-National
5h 49m
1 stop
SAT1:04 pmSan Antonio
Dec 2
SAT7:00 amSan Antonio
6h 13m
1 stop
DCA2:13 pmWashington, D.C. Reagan-National
$299
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Reagan-National Airport 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 6, 2025.
Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to San Antonio that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Thu 12/11

8:00 am-6:58 pm

1 stop11h 58m

San Antonio

Sun 12/14

10:25 am-9:59 pm

1 stop10h 34m

$257

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Fri 11/21

2:00 pm-12:20 am

1 stop11h 20m

San Antonio

Mon 11/24

1:50 pm-1:03 pm

2 stops22h 13m

$258

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Tue 12/9

2:40 pm-6:55 pm

1 stop5h 15m

San Antonio

Wed 12/10

6:50 am-12:35 pm

1 stop4h 45m

$260

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Wed 12/3

11:50 am-5:00 pm

1 stop6h 10m

San Antonio

Wed 12/10

6:50 am-12:35 pm

1 stop4h 45m

$264

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Thu 12/4

6:38 pm-11:47 pm

1 stop6h 09m

San Antonio

Mon 12/8

6:48 am-11:00 am

Nonstop3h 12m

$268

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Tue 12/2

7:40 pm-12:34 am

1 stop5h 54m

San Antonio

Sun 12/7

5:20 am-11:37 am

1 stop5h 17m

$269

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Thu 12/25

8:15 am-3:53 pm

1 stop8h 38m

San Antonio

Wed 12/31

2:08 pm-8:59 pm

1 stop5h 51m

$277

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Thu 3/26

8:00 am-1:13 pm

1 stop6h 13m

San Antonio

Tue 3/31

12:24 pm-6:25 pm

1 stop5h 01m

$278

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Thu 11/20

7:59 pm-11:05 pm

Nonstop4h 06m

San Antonio

Tue 12/2

6:50 am-10:59 am

Nonstop3h 09m

$279

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Thu 12/25

8:20 am-3:40 pm

1 stop8h 20m

San Antonio

Thu 1/1

5:10 am-12:57 pm

1 stop6h 47m

$282

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. Reagan-National Airport 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 cheapest month to fly to San Antonio?

If you aren’t able to travel during the month of September, then book flights to San Antonio from Washington, D.C. Reagan-National Airport during February instead. Flights to San Antonio in February, while not as cheap as those in September, still average around $298.

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 $354. 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 $507.

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. Reagan-National Airport 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. Reagan-National to San Antonio flight route?

Fly from Washington, D.C. Reagan-National to San Antonio for the best Washington, D.C. Reagan-National - 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. Reagan-National Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to San Antonio for around $362 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. Reagan-National Airport for as low as $272 on momondo.

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

There are 3 cabin classes available to choose from on Washington, D.C. Reagan-National 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. Reagan-National Airport to San Antonio flights?

You could potentially save up to 4% on your flight if you consider stops on a Washington, D.C. Reagan-National Airport to San Antonio flight.

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

As of November 2025, prices for Washington, D.C. Reagan-National Airport to San Antonio flights are approximately 9% more expensive when compared to flights at the same time last year.

When to book flights from Washington, D.C. Reagan-National Airport to San Antonio

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Reagan-National Airport 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. Reagan-National Airport to San Antonio (DCA to SAT) flight deals and tips

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

Best Price Found

$148

Fastest flight time

3h 40m

Direct flights

Every day

Airports in San Antonio

1 airport
The best one-way flight to San Antonio from Washington, D.C. Reagan-National Airport in the past 72 hours is $148. The best round-trip flight deal from Washington, D.C. Reagan-National Airport to San Antonio found on momondo in the last 72 hours is $359.
The fastest flight from Washington, D.C. Reagan-National Airport to San Antonio takes 3h 40m
Direct flights go from Washington, D.C. Reagan-National Airport to San Antonio every day.
There is 1 airport near San Antonio: San Antonio (SAT)
Search flight deals

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

    Washington, D.C. Reagan-National and San Antonio are 1383.3 mi apart from one another. A reasonable flight in good conditions will take 3h 51m.

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

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

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington, D.C. Reagan-National Airport to San Antonio Airport.

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

    The travel and health documents required for your trip to San Antonio Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at San Antonio Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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

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

Best airlines flying from Washington, D.C. Reagan-National Airport to San Antonio

Compare and see reviews for airlines that fly from Washington, D.C. Reagan-National Airport to San Antonio with momondo
Airline
Rating
Free Cancellation
Price
SouthwestPriceFrom $224Free CancellationRating
8.0
4,240 reviews
Search Southwest flights
American AirlinesPriceFrom $231Free CancellationRating
7.2
11,042 reviews
Search American Airlines flights
DeltaPriceFrom $248Free CancellationRating
7.9
8,004 reviews
Search Delta flights
United AirlinesPriceFrom $258Free CancellationRating
7.4
9,003 reviews
Search United Airlines flights

  • Southwest Flights From Washington, D.C. Reagan-National Airport to San Antonio

    The lowest priced Southwest flight from Washington, D.C. Reagan-National Airport to San Antonio from the last 72 hours was $224. Generally, Southwest has 10 flights on this route every week with an average price of $436. Southwest is rated 8.0/10 by our users.

  • American Airlines Flights From Washington, D.C. Reagan-National Airport to San Antonio

    Another popular option for Washington, D.C. Reagan-National Airport to San Antonio flights is American Airlines (7.2/10, 11,042 ratings). American Airlines flies from Washington, D.C. Reagan-National Airport to San Antonio around 7 times per week, with deals starting from $231 round-trip and rising to an average price of around $341.

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?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Washington, D.C. to San Antonio. momondo saves you time and could save you money on your trip.

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

momondo does allow users to show only those flights to San Antonio from Washington, D.C. which offer a flexible booking policy as well as other useful filters and features.

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

momondo provides multiple filters to help you find the best flight to San Antonio from Washington, D.C.. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Yes momondo offers price alerts on flights to San Antonio from Washington, D.C.. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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