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$80+ 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 4/18. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — SAT
kwi 23 — kwi 301
czw. 4/23
czw. 4/30
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 July, booked 64 days in advance, depart on a Friday or Wednesday and return on a Saturday

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 Marzec 24, 2026.

This Kiwi.com deal was found by Cheapflights users on 3/24. 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.
pt. 5/86:00 pm
DCA
-
SAT
1 stop25h 59m
Frontier
pt. 5/157:54 pm
SAT
-
DCA
1 stop16h 05m
Frontier
Deal found 3/24$274
This Kiwi.com deal was found by Cheapflights users on 3/24. 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.
pt. 4/246:00 pm
DCA
-
SAT
1 stop22h 09m
Frontier
pon. 4/278:39 pm
SAT
-
DCA
2 stops15h 21m
Frontier
Deal found 3/24$278
This Southwest deal was found by Cheapflights users on 3/22. 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.
śr. 4/292:40 pm
DCA
-
SAT
2 stops8h 20m
Southwest
ndz. 5/35:25 am
SAT
-
DCA
1 stop4h 45m
Southwest
Deal found 3/22$279
This Southwest deal was found by Cheapflights users on 3/24. 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.
pt. 5/16:10 am
DCA
-
SAT
1 stop8h 05m
Southwest
pon. 5/43:05 pm
SAT
-
DCA
1 stop6h 40m
Southwest
Deal found 3/24$280
This Expedia deal was found by Cheapflights users on 3/23. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
pt. 4/106:00 pm
DCA
-
SAT
1 stop7h 19m
Frontier
ndz. 4/126:45 am
SAT
-
DCA
1 stop28h 17m
Frontier
Deal found 3/23$281
This Kiwi.com deal was found by Cheapflights users on 3/22. 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.
pt. 5/16:00 pm
DCA
-
SAT
1 stop22h 09m
Frontier
wt. 5/58:59 pm
SAT
-
DCA
2 stops15h 00m
Frontier
Deal found 3/22$282
This Southwest deal was found by Cheapflights users on 3/20. 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.
wt. 4/146:10 am
DCA
-
SAT
1 stop5h 15m
Southwest
wt. 4/141:40 pm
SAT
-
DCA
1 stop6h 10m
Southwest
Deal found 3/20$284
This Southwest deal was found by Cheapflights users on 3/23. 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.
pt. 5/85:00 pm
DCA
-
SAT
2 stops7h 00m
Southwest
pon. 5/113:05 pm
SAT
-
DCA
1 stop6h 40m
Southwest
Deal found 3/23$286
This Southwest deal was found by Cheapflights users on 3/23. 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.
śr. 4/228:00 am
DCA
-
SAT
2 stops10h 20m
Southwest
śr. 4/299:05 am
SAT
-
DCA
2 stops8h 35m
Southwest
Deal found 3/23$289
This Frontier deal was found by Cheapflights users on 3/20. 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.
sob. 4/41:00 pm
DCA
-
SAT
1 stop12h 19m
Frontier
śr. 4/87:45 am
SAT
-
DCA
1 stop13h 14m
Frontier
Deal found 3/20$290
This Kiwi.com deal was found by Cheapflights users on 3/24. 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.
pon. 4/131:00 pm
DCA
-
SAT
1 stop27h 09m
Frontier
pt. 4/173:00 pm
SAT
-
DCA
1 stop21h 00m
Frontier
Deal found 3/24$294
This Frontier deal was found by Cheapflights users on 3/19. 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.
pt. 3/202:00 pm
DCA
-
SAT
1 stop11h 17m
Frontier
ndz. 3/2910:05 am
SAT
-
DCA
1 stop10h 54m
Frontier
Deal found 3/19$295

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 Marzec 24, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$274
(Kiwi.com)

One-way from

$80
(Frontier)

Popular in

May

Cheapest in

September

Average price

$378

Good round-trip deal

$289 or less

Good one-way deal

$253 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. 4% potential increase in price ($17 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 Marzec 24, 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

wt. 5/19

2:40 pm-10:00 pm

2 stops8h 20m

San Antonio

czw. 5/21

4:45 pm-10:40 pm

1 stop4h 55m

$279

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

pt. 5/8

5:00 pm-11:00 pm

2 stops7h 00m

San Antonio

pon. 5/11

3:05 pm-10:45 pm

1 stop6h 40m

$286

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

sob. 5/23

7:30 pm-12:44 am

1 stop6h 14m

San Antonio

śr. 5/27

2:27 pm-9:45 pm

1 stop6h 18m

$309

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

pt. 8/21

11:05 am-3:39 pm

1 stop5h 34m

San Antonio

pon. 8/24

11:50 am-6:25 pm

1 stop5h 35m

$329

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

wt. 7/14

5:29 pm-10:22 pm

1 stop5h 53m

San Antonio

czw. 7/23

2:21 pm-9:45 pm

1 stop6h 24m

$357

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

pt. 4/17

7:38 pm-12:46 am

1 stop6h 08m

San Antonio

pon. 4/20

4:30 pm-11:41 pm

1 stop6h 11m

$357
Quickest round-trip

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

śr. 7/15

6:00 am-10:34 am

1 stop5h 34m

San Antonio

pon. 7/20

2:21 pm-8:43 pm

1 stop5h 22m

$357

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

czw. 5/28

5:28 pm-10:27 pm

1 stop5h 59m

San Antonio

pon. 6/1

4:15 pm-10:59 pm

1 stop5h 44m

$357

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

sob. 6/6

6:05 am-11:50 am

1 stop6h 45m

San Antonio

śr. 6/10

5:45 am-3:00 pm

2 stops8h 15m

$359

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

pt. 4/10

8:30 am-3:46 pm

1 stop8h 16m

San Antonio

sob. 4/11

4:17 pm-10:15 pm

1 stop4h 58m

$384

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/23

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 March.
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?

Use this chart to determine the optimal time to book a round-trip flight from Reagan-National to San Antonio. Price data was last updated on March 13, 2026.

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 64 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, February is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to San Antonio (average of $159). Flying from Washington, D.C. Reagan-National Airport to San Antonio in March is currently the most expensive (average of $249). 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 Marzec 24, 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 at noon. If you’re flexible enough to do this you can expect to save up to 37% on your trip compared to booking a flight in the morning.

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 Marzec 24, 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
4,332 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
8.0
Very good
4,332 reviews
Southwest
8.0
Very good
4,332 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Delta
7.9
Good
8,327 reviews
Southwest
8.0
Very good
4,332 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
United Airlines
7.4
Good
9,478 reviews
Southwest
8.0
Very good
4,332 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
American Airlines
7.1
Good
11,493 reviews
Southwest
8.0
Very good
4,332 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

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 2 inbound flights 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 5h 34m. 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?

    Southwest, at $208, 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 American Airlines and Delta. Users have found that Southwest is 39% 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?

    $89 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on Southwest and Delta, with prices starting from $148 and $148, 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 $330, our data indicates the cheapest price to be $158. The most popular route (Washington, D.C. Reagan-National - San Antonio), is priced around $213.

  • 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, February is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to San Antonio (average of $159). Flying from Washington, D.C. Reagan-National Airport to San Antonio in March is currently the most expensive (average of $249). 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 Marzec 24, 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$208Average$387FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$228Average$347FlexibilityNo cancel feeOn-time71%
DeltaCheapest$250Average$381FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$267Average$381FlexibilityNo cancel feeOn-time69%

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