HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
San Antonio

$103+ 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 11/7. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — SAT
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Reagan-National to San Antonio with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Washington, D.C. Reagan-National to San Antonio are usually found in September or February, booked 52 days in advance, depart on a Saturday or Wednesday and return on a Saturday

Cheap 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 October 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$260
(Southwest)

One-way from

$103
(Priceline)

Popular in

December

Cheapest in

September

Average price

$368

Good round-trip deal

$283 or less

Good one-way deal

$193 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. 16% potential increase in price ($69 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 October 2025
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

Find 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 October 30, 2025.

This Southwest deal was found by Cheapflights users on 10/29. 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.
Tue 12/92:40 pmDCA - SAT
1 stop5h 15mSouthwest
Wed 12/106:50 amSAT - DCA
1 stop4h 45mSouthwest
Deal found 10/29$260
This Priceline deal was found by Cheapflights users on 10/27. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/128:00 amDCA - SAT
1 stop12h 00mFrontier
Sun 12/1410:25 amSAT - DCA
1 stop10h 34mFrontier
Deal found 10/27$261
This Mytrip deal was found by Cheapflights users on 10/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/72:00 pmDCA - SAT
1 stop25h 17mFrontier
Sun 11/98:25 pmSAT - DCA
1 stop24h 34mFrontier
Deal found 10/28$262
This Booking.com deal was found by Cheapflights users on 10/28. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/142:00 pmDCA - SAT
1 stop25h 17mFrontier
Sun 11/168:25 pmSAT - DCA
1 stop24h 34mFrontier
Deal found 10/28$264
This American Airlines deal was found by Cheapflights users on 10/30. 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.
Thu 12/47:44 pmDCA - SAT
Nonstop3h 51mAmerican Airlines
Sun 12/76:00 amSAT - DCA
1 stop4h 59mAmerican Airlines
Deal found 10/30$268
This Delta deal was found by Cheapflights users on 10/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/237:59 amDCA - SAT
1 stop5h 11mDelta
Tue 12/21:00 pmSAT - DCA
1 stop5h 40mDelta
Deal found 10/28$269
This Southwest deal was found by Cheapflights users on 10/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/43:20 pmDCA - SAT
2 stops7h 35mSouthwest
Wed 12/102:35 pmSAT - DCA
1 stop5h 10mSouthwest
Deal found 10/30$274
This Kiwi.com deal was found by Cheapflights users on 10/28. 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.
Thu 12/42:00 pmDCA - SAT
2 stops24h 00mMultiple Airlines
Sun 12/77:56 pmSAT - DCA
1 stop16h 10mMultiple Airlines
Deal found 10/28$275
This Frontier deal was found by Cheapflights users on 10/30. 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 12/252:00 pmDCA - SAT
1 stop11h 17mFrontier
Wed 12/312:09 pmSAT - DCA
1 stop6h 50mFrontier
Deal found 10/30$276

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 October 30, 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

Reagan-National

Fly to

San Antonio

Route

Depart

Return

Price

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Mon 11/24

7:35 pm-12:38 am

1 stop6h 03m

San Antonio

Thu 11/27

12:10 pm-9:15 pm

1 stop8h 05m

$269

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Thu 1/22

4:28 pm-9:21 pm

1 stop5h 53m

San Antonio

Sun 1/25

9:50 am-3:57 pm

1 stop5h 07m

$269

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Sun 11/23

7:35 pm-12:38 am

1 stop6h 03m

San Antonio

Thu 11/27

12:10 pm-9:15 pm

1 stop8h 05m

$269

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Fri 1/9

2:45 pm-7:41 pm

1 stop5h 56m

San Antonio

Sun 1/11

2:05 pm-8:59 pm

1 stop5h 54m

$269

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Wed 12/3

5:31 pm-10:57 pm

1 stop6h 26m

San Antonio

Sat 12/6

5:20 am-11:37 am

1 stop5h 17m

$269

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Mon 11/24

7:35 pm-12:38 am

1 stop6h 03m

San Antonio

Tue 12/2

1:00 pm-9:41 pm

1 stop7h 41m

$269

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Sat 12/13

6:00 am-10:36 am

1 stop5h 36m

San Antonio

Wed 12/17

6:25 am-1:30 pm

1 stop6h 05m

$269

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Fri 11/28

6:00 am-10:55 am

1 stop5h 55m

San Antonio

Sat 12/6

11:41 am-5:21 pm

1 stop4h 40m

$269

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Tue 12/30

5:42 pm-12:38 am

1 stop7h 56m

San Antonio

Mon 1/5

5:20 am-12:40 pm

1 stop6h 20m

$269

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Sun 11/23

7:59 am-12:10 pm

1 stop5h 11m

San Antonio

Tue 12/2

1:00 pm-7:40 pm

1 stop5h 40m

$269

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

Showing 1-10 of 21 results
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 October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Washington, D.C. Reagan-National Airport-San Antonio flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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 October 24, 2025.

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 52 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, November is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to San Antonio (average of $152). Flying from Washington, D.C. Reagan-National Airport to San Antonio in March is currently the most expensive (average of $250). 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 October 30, 2025.

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 afternoon. If you’re flexible enough to do this you can expect to save up to 42% on your trip compared to booking a flight at noon.

What is the cheapest day to fly from Washington, D.C. Reagan-National Airport to San Antonio?

Use this chart to determine the cheapest time to fly round-trip from Reagan-National to San Antonio. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Washington, D.C. Reagan-National Airport to San Antonio flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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 October 30, 2025.
Get a feel of what it's like to fly with Southwest, Delta, and United 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
4,243 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Boarding

8.1

Crew

8.6

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
4,243 reviews
Southwest
8.0
Very good
4,243 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Boarding

8.1

Crew

8.6

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
7.9
Good
7,998 reviews
Southwest
8.0
Very good
4,243 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Boarding

8.1

Crew

8.6

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
8,998 reviews
Southwest
8.0
Very good
4,243 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Boarding

8.1

Crew

8.6

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
7.2
Good
11,035 reviews
Southwest
8.0
Very good
4,243 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Boarding

8.1

Crew

8.6

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 0 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 53m. 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 $224, 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 37% 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?

    $123 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on United Airlines and Delta, with prices starting from $135 and $135, 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 $320, our data indicates the cheapest price to be $148. The most popular route (Washington, D.C. Reagan-National - San Antonio), is priced around $182.

  • 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, November is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to San Antonio (average of $152). Flying from Washington, D.C. Reagan-National Airport to San Antonio in March is currently the most expensive (average of $250). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Reagan-National to San Antonio

See prices for flight routes from nearby airports that may be better suited for you.
Dulles Intl to Dallas/Fort Worth flights
Baltimore to Dallas/Fort Worth flights
Reagan-National to Dallas/Fort Worth flights
Reagan-National to Hobby flights
Baltimore to Hobby flights
Dulles Intl to Hobby flights
Dulles Intl to George Bush Intcntl flights
Dulles Intl to Austin flights
Reagan-National to George Bush Intcntl flights
Baltimore to George Bush Intcntl flights
Baltimore to Love Field flights
Reagan-National to Love Field flights
Baltimore to Austin flights
Reagan-National to Austin flights
Dulles Intl to Love Field flights
Dulles Intl to San Antonio flights
Baltimore to San Antonio flights
Dulles Intl to El Paso flights
Baltimore to El Paso flights
Reagan-National to El Paso flights
Baltimore to Corpus Christi flights
Dulles Intl to McAllen flights
Reagan-National to Harlingen flights
Dulles Intl to Corpus Christi flights
Reagan-National to McAllen flights
Dulles Intl to Brownsville flights
Baltimore to McAllen flights
Dulles Intl to Harlingen flights
Dulles Intl to Midland flights
Reagan-National to Corpus Christi flights
Baltimore to Midland flights
Reagan-National to Brownsville flights
Baltimore to Laredo flights
Baltimore to Brownsville flights
Baltimore to Killeen flights
Baltimore to Harlingen flights
Reagan-National to Midland flights
Baltimore to Lubbock flights
Dulles Intl to Lubbock flights
Dulles Intl to Amarillo flights
Baltimore to Amarillo flights
Reagan-National to Lubbock flights
Reagan-National to Texarkana flights
Dulles Intl to Waco flights
Reagan-National to Laredo flights
Dulles Intl to Laredo flights
Baltimore to Texarkana flights
Dulles Intl to Texarkana flights
Dulles Intl to College Station flights

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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$224Average$435FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$231Average$340FlexibilityNo cancel feeOn-time71%
DeltaCheapest$248Average$341FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$258Average$403FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.