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$165+ Cheap flights from Reagan-National (DCA) to San Antonio (SAT)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/31. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — SAT
Sep 2 — Sep 91
Wed 9/2
Wed 9/9
1 adult, Economy
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Cheapflights Tip: The best prices from Washington, D.C. Reagan-National to San Antonio are usually found in September or January, booked 64 days in advance, depart on a Friday or Thursday and return on a Thursday

Cheap flight deals from Reagan-National to San Antonio

Cheapest flights from Reagan-National to San Antonio
Explore the most affordable flight options available from Reagan-National to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 3, 2026.

This Southwest deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/36:50 am
DCA
-
SAT
1 stop5h 20m
Southwest
Sun 9/612:15 pm
SAT
-
DCA
1 stop4h 55m
Southwest
Deal found 8/2$309
This CheapOair deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/36:00 pm
DCA
-
SAT
1 stop26h 31m
Frontier
Wed 9/98:20 pm
SAT
-
DCA
1 stop24h 39m
Frontier
Deal found 7/31$310
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/17:00 am
DCA
-
SAT
1 stop13h 31m
Frontier
Sat 9/128:20 pm
SAT
-
DCA
1 stop14h 51m
Frontier
Deal found 7/31$311
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/317:00 am
DCA
-
SAT
1 stop13h 31m
Frontier
Tue 9/88:26 pm
SAT
-
DCA
1 stop14h 45m
Frontier
Deal found 7/31$312
This Kiwi.com deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/127:00 am
DCA
-
SAT
1 stop13h 25m
Frontier
Mon 9/148:20 pm
SAT
-
DCA
1 stop19h 39m
Frontier
Deal found 8/2$313
This Southwest deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/46:50 pm
DCA
-
SAT
1 stop5h 10m
Southwest
Mon 9/77:10 am
SAT
-
DCA
1 stop5h 30m
Southwest
Deal found 7/29$314
This CheapOair deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/117:00 am
DCA
-
SAT
1 stop12h 54m
Frontier
Fri 8/147:49 pm
SAT
-
DCA
1 stop16h 02m
Frontier
Deal found 7/29$315
This Frontier deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/227:00 am
DCA
-
SAT
1 stop8h 15m
Frontier
Thu 10/2911:08 am
SAT
-
DCA
1 stop9h 50m
Frontier
Deal found 7/30$316
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/17:00 am
DCA
-
SAT
1 stop13h 31m
Frontier
Fri 9/118:20 pm
SAT
-
DCA
1 stop14h 51m
Frontier
Deal found 7/31$317
This American Airlines deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2812:57 pm
DCA
-
SAT
1 stop7h 29m
American Airlines
Tue 9/18:30 am
SAT
-
DCA
Nonstop3h 29m
American Airlines
Deal found 7/30$318
This Kiwi.com deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/197:00 am
DCA
-
SAT
1 stop13h 31m
Frontier
Fri 8/218:26 pm
SAT
-
DCA
1 stop15h 25m
Frontier
Deal found 7/29$320

Find flight deals from Reagan-National to San Antonio

Discover tips and strategies to find the most affordable flight options for your journey from Reagan-National (DCA) to San Antonio (SAT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$309
(Southwest)

One-way from

$165
(Southwest)

Popular in

May

Cheapest in

September

Average price

$328

Good round-trip deal

$309 or less

Good one-way deal

$144 or less
Provider with most accurate pricing for Washington, D.C. Reagan-National-San Antonio flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. Reagan-National-San Antonio flights.
Search Deals
From Washington, D.C. Reagan-National to San Antonio
Search Deals
One-way flight from Washington, D.C. Reagan-National to San Antonio
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($43 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2026
Search Deals
Price to beat on a round-trip flight from Washington, D.C. Reagan-National to San Antonio.
Search Deals
Price to beat on a one-way flight from Washington, D.C. Reagan-National to San Antonio.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Reagan-National 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, Cheapflights users made 2,558,603 searches. Data last updated August 3, 2026.
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

Cheapest round-trip

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Wed 8/19

3:00 pm-9:29 pm

1 stop7h 29m

San Antonio

Thu 8/20

12:37 pm-10:59 pm

1 stop9h 22m

$314
Quickest round-trip

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Wed 9/2

6:00 am-9:48 am

1 stop4h 48m

San Antonio

Sun 9/6

5:20 am-11:27 am

1 stop5h 07m

$324

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Tue 9/29

6:50 pm-11:00 pm

1 stop5h 10m

San Antonio

Thu 10/1

6:10 am-12:00 pm

1 stop4h 50m

$330

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Mon 12/28

7:30 pm-12:28 am

1 stop5h 58m

San Antonio

Tue 1/5

10:45 am-6:14 pm

1 stop6h 29m

$339

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Thu 11/19

9:40 am-4:05 pm

1 stop7h 25m

San Antonio

Mon 11/23

11:45 am-6:40 pm

1 stop5h 55m

$339

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Thu 11/19

9:40 am-4:05 pm

1 stop7h 25m

San Antonio

Thu 11/26

3:10 pm-11:28 pm

1 stop7h 18m

$339

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Sat 9/5

6:30 pm-10:43 pm

1 stop5h 13m

San Antonio

Thu 9/10

5:30 am-11:26 am

1 stop4h 56m

$339

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Thu 10/29

7:40 pm-12:33 am

1 stop5h 53m

San Antonio

Mon 11/2

2:00 pm-10:49 pm

1 stop7h 49m

$339

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Wed 9/16

7:25 am-12:50 pm

2 stops6h 25m

San Antonio

Wed 9/23

4:20 pm-10:20 pm

1 stop5h 00m

$340

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Sat 9/19

6:30 am-1:50 pm

2 stops8h 20m

San Antonio

Mon 9/21

3:30 pm-11:55 pm

2 stops7h 25m

$348

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/1

Showing 1-10 of 23 resultsSorted by cheapest first
1
2
3

Compare providers for flights from Reagan-National to San Antonio

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Reagan-National to San Antonio in August.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Washington, D.C. Reagan-National Airport-San Antonio flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C. Reagan-National Airport-San Antonio flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Reagan-National Airport-San Antonio flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Reagan-National Airport-San Antonio flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C. Reagan-National Airport-San Antonio flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Reagan-National to San Antonio

Have a flexible travel schedule? Discover the best time to fly to San Antonio from Reagan-National with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Reagan-National Airport to San Antonio

How far ahead should I book a flight from Washington, D.C. Reagan-National Airport to San Antonio?

To ensure you get the cheapest price possible for a flight from Washington, D.C. Reagan-National Airport to San Antonio, you should look to book at least 63 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Washington, D.C. Reagan-National Airport to San Antonio?

Currently, September is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to San Antonio (average of $308). Flying from Washington, D.C. Reagan-National Airport to San Antonio in May is currently the most expensive (average of $493). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from DCA to SAT?

Find hourly flight availability from Reagan-National to San Antonio. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 3, 2026.

A simple way to save on the total cost of your ticket is to fly from Washington, D.C. Reagan-National Airport to San Antonio in the morning. If you’re flexible enough to do this you can expect to save up to 19% on your trip compared to booking a flight in the afternoon.

How much does it cost to fly round-trip from Washington, D.C. Reagan-National Airport to San Antonio?

Airfare is typical for this route at the moment.

Washington, D.C. Reagan-National Airport to San Antonio flights typically cost between $308 and $418 in September.
The cheapest round-trip price found within the last 5 days was $309 on Southwest (Sep 3-Sep 6).

Reviews of airlines servicing San Antonio

Get insights into the airlines that provide service to San Antonio. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Antonio. Reviews last updated August 3, 2026.
Get a feel of what it's like to fly with Southwest,Delta, andUnited Airlines from Washington, D.C. Reagan-National Airport to San Antonio by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,227 reviews

Comfort

8.0

Overall

8.0

Food

7.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,227 reviews
Southwest
8.0
Very good
4,227 reviews

Comfort

8.0

Overall

8.0

Food

7.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
7.8
Good
8,483 reviews
Southwest
8.0
Very good
4,227 reviews

Comfort

8.0

Overall

8.0

Food

7.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
10,058 reviews
Southwest
8.0
Very good
4,227 reviews

Comfort

8.0

Overall

8.0

Food

7.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.1
Good
11,842 reviews
Southwest
8.0
Very good
4,227 reviews

Comfort

8.0

Overall

8.0

Food

7.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

Find useful and relevant information for your journey from Reagan-National to San Antonio. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to San Antonio from Washington, D.C. Reagan-National?

    Most people fly into San Antonio (SAT) if they book a flight to San Antonio from Washington, D.C. Reagan-National. On average, San Antonio has 1 inbound flight from Washington, D.C. Reagan-National per day from 4 airlines. San Antonio is conveniently located just 7.6 mi from San Antonio’s city center.

  • How long is the flight from Washington, D.C. Reagan-National Airport to San Antonio?

    Departing from Washington, D.C. Reagan-National Airport to San Antonio will take you 4h 48m. There are 1378 mi between Washington, D.C. Reagan-National Airport and San Antonio. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Washington, D.C. Reagan-National Airport to San Antonio round-trip?

    American Airlines, at $249, was found to be the cheapest airline from Washington, D.C. Reagan-National Airport to San Antonio.Alternate airlines to your destination round-trip include Delta and Southwest. Users have found that American Airlines is 32% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Washington, D.C. Reagan-National Airport to San Antonio one-way?

    $148 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on Southwest and United Airlines, with prices starting from $154 and $156, respectively.

  • What are the cheapest flights from Washington, D.C. Reagan-National Airport to San Antonio?

    Looking for the cheapest flight from Washington, D.C. Reagan-National Airport to San Antonio? While on average our users pay $356, our data indicates the cheapest price to be $144. The most popular route (Washington, D.C. Reagan-National - San Antonio), is priced around $240.

  • Can I find deals for flights from Reagan-National to San Antonio that include hotel bookings?

    Yes. In addition to deals on Reagan-National to San Antonio flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Reagan-National to San Antonio?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Reagan-National to San Antonio.

  • Can I find deals for business class flights from Reagan-National to San Antonio?

    Yes. Cheapflights offers flight deals from Reagan-National to San Antonio by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Washington, D.C. Reagan-National Airport to San Antonio?

    Currently, September is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to San Antonio (average of $308). Flying from Washington, D.C. Reagan-National Airport to San Antonio in May is currently the most expensive (average of $493). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near San Antonio?

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

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Top 4 airlines flying from Reagan-National to San Antonio

Discover the top 4 airlines that operate flights from Reagan-National to San Antonio. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$249Average$356FlexibilityNo cancel feeOn-time71%
DeltaCheapest$258Average$408FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$264Average$391FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$267Average$393FlexibilityNo cancel feeOn-time69%

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