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Cheap flights from Washington, D.C. Reagan-National Airport to San Antonio from $141

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 10/4. 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

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
Tue, Sep 23 - Sat, Sep 27
Frontier Logo
7:00 am - 7:15 pmDCA-SAT
13h 15m1 stop
Frontier Logo
3:22 pm - 12:10 pmSAT-DCA
19h 48m1 stop
$258Frontier
Find Deal
Thu, Sep 18 - Sat, Sep 20
Frontier Logo
1:00 pm - 7:15 pmDCA-SAT
7h 15m1 stop
Frontier Logo
9:33 pm - 12:10 pmSAT-DCA
13h 37m2 stops
$261Frontier
Find Deal
Thu, Oct 2 - Sun, Oct 5
United Airlines Logo
8:20 am - 3:22 pmDCA-SAT
8h 02m1 stop
United Airlines Logo
5:56 pm - 11:50 pmSAT-DCA
4h 54m1 stop
$264United Airlines
Find Deal
Mon, Sep 29 - Mon, Oct 6
United Airlines Logo
6:00 am - 1:15 pmDCA-SAT
8h 15m1 stop
United Airlines Logo
4:24 pm - 10:10 pmSAT-DCA
4h 46m1 stop
$269United Airlines
Find Deal
Fri, Sep 26 - Mon, Sep 29
American Airlines Logo
7:59 pm - 10:36 pmDCA-SAT
3h 37mnonstop
American Airlines Logo
6:35 am - 10:55 amSAT-DCA
3h 20mnonstop
$271American Airlines
Find Deal
Mon, Sep 22 - Sun, Sep 28
Southwest Logo
6:00 am - 12:10 pmDCA-SAT
7h 10m1 stop
Southwest Logo
3:00 pm - 8:45 pmSAT-DCA
4h 45m1 stop
$284Southwest
Find Deal
Mon, Nov 3 - Mon, Nov 10
Southwest Logo
5:40 pm - 11:15 pmDCA-SAT
6h 35m1 stop
Southwest Logo
7:10 am - 2:15 pmSAT-DCA
6h 05m1 stop
$289Southwest
Find Deal
Fri, Nov 7 - Sun, Nov 9
Delta Logo
6:19 am - 10:40 amDCA-SAT
5h 21m1 stop
Delta Logo
2:31 pm - 10:00 pmSAT-DCA
6h 29m1 stop
$316Delta
Find Deal
Wed, Oct 15 - Wed, Oct 22
Delta Logo
6:20 pm - 11:59 pmDCA-SAT
6h 39m1 stop
Delta Logo
11:26 am - 8:59 pmSAT-DCA
8h 33m1 stop
$329Delta
Find Deal
Tue, Sep 16 - Fri, Sep 19

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
Sep 23
DCA7:59 pmWashington, D.C. Reagan-National
3h 37m
SAT10:36 pmSan Antonio
Sep 27
SAT6:35 amSan Antonio
3h 20m
DCA10:55 amWashington, D.C. Reagan-National
$249
Find similar
American Airlines
Sep 22
DCA7:59 pmWashington, D.C. Reagan-National
3h 37m
SAT10:36 pmSan Antonio
Sep 28
SAT6:35 amSan Antonio
3h 20m
DCA10:55 amWashington, D.C. Reagan-National
$271
Find similar
American Airlines
Sep 3
DCA7:59 pmWashington, D.C. Reagan-National
3h 37m
SAT10:36 pmSan Antonio
Sep 6
SAT6:35 amSan Antonio
3h 20m
DCA10:55 amWashington, D.C. Reagan-National
$277
Find similar

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

Our best Frontier deals on Washington, D.C. Reagan-National Airport to San Antonio flight tickets
Frontier
Sep 8
DCA1:00 pmWashington, D.C. Reagan-National
7h 15m
1 stop
SAT7:15 pmSan Antonio
Sep 12
SAT12:41 pmSan Antonio
8h 18m
1 stop
DCA9:59 pmWashington, D.C. Reagan-National
$234
Find similar
Frontier
Sep 11
DCA1:00 pmWashington, D.C. Reagan-National
7h 15m
1 stop
SAT7:15 pmSan Antonio
Sep 12
SAT12:41 pmSan Antonio
8h 18m
1 stop
DCA9:59 pmWashington, D.C. Reagan-National
$244
Find similar
Frontier
Sep 5
DCA6:00 pmWashington, D.C. Reagan-National
21h 27m
1 stop
SAT2:27 pmSan Antonio
Sep 14
SAT9:55 amSan Antonio
25h 15m
1 stop
DCA12:10 pmWashington, D.C. Reagan-National
$250
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 September 2, 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

Tue 9/23

7:59 pm-10:36 pm

Nonstop3h 37m

San Antonio

Sat 9/27

6:35 am-10:55 am

Nonstop3h 20m

$249

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Thu 9/18

7:00 am-7:15 pm

1 stop13h 15m

San Antonio

Sat 9/20

3:22 pm-12:10 pm

1 stop19h 48m

$258

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Thu 10/2

1:00 pm-7:15 pm

1 stop7h 15m

San Antonio

Sun 10/5

9:33 pm-12:10 pm

2 stops13h 37m

$261

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Mon 9/29

8:20 am-3:22 pm

1 stop8h 02m

San Antonio

Mon 10/6

5:56 pm-11:50 pm

1 stop4h 54m

$264

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Fri 9/26

6:00 am-1:15 pm

1 stop8h 15m

San Antonio

Mon 9/29

4:24 pm-10:10 pm

1 stop4h 46m

$269

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Mon 9/22

7:59 pm-10:36 pm

Nonstop3h 37m

San Antonio

Sun 9/28

6:35 am-10:55 am

Nonstop3h 20m

$271

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Mon 11/3

6:00 am-12:10 pm

1 stop7h 10m

San Antonio

Mon 11/10

3:00 pm-8:45 pm

1 stop4h 45m

$284

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Fri 11/7

5:40 pm-11:15 pm

1 stop6h 35m

San Antonio

Sun 11/9

7:10 am-2:15 pm

1 stop6h 05m

$289

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Wed 10/15

6:19 am-10:40 am

1 stop5h 21m

San Antonio

Wed 10/22

2:31 pm-10:00 pm

1 stop6h 29m

$316

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Tue 9/16

6:20 pm-11:59 pm

1 stop6h 39m

San Antonio

Fri 9/19

11:26 am-8:59 pm

1 stop8h 33m

$329

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 February, then book flights to San Antonio from Washington, D.C. Reagan-National Airport during August instead. Flights to San Antonio in August, while not as cheap as those in February, still average around $317.

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 $511.

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 $315. 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 $432. 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. 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 $369 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 $284 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 September 2025, prices for Washington, D.C. Reagan-National Airport to San Antonio flights are approximately 160% 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

$253

Fastest flight time

3h 37m

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 $253. 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 $249.
The fastest flight from Washington, D.C. Reagan-National Airport to San Antonio takes 3h 37m
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 37m.

  • 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
FrontierPriceFrom $128Free CancellationRating
5.8
3,198 reviews
Search Frontier flights
American AirlinesPriceFrom $221Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $224Free CancellationRating
8.0
4,238 reviews
Search Southwest flights
DeltaPriceFrom $249Free CancellationRating
7.9
7,973 reviews
Search Delta flights
United AirlinesPriceFrom $268Free CancellationRating
7.4
8,937 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 5 flights on this route every week with an average price of $435. 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, 10,000 ratings). American Airlines flies from Washington, D.C. Reagan-National Airport to San Antonio around 2 times per week, with deals starting from $221 round-trip and rising to an average price of around $352.

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?

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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