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$71+ Cheap flights from Washington, D.C. (WAS) 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 9/25. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — SAT
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from Washington, D.C. to San Antonio are usually found in August or July, booked 80 days in advance, depart on a Tuesday or Wednesday and return on a Thursday

Cheap flight deals from Washington, D.C. to San Antonio

Discover tips and strategies to find the most affordable flight options for your journey from Washington, D.C. (WAS) 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 September 11, 2025.

Round-trip from

$152
(Booking.com)

One-way from

$71
(Kiwi.com)

Popular in

December

Cheapest in

August

Average price

$345

Good round-trip deal

$249 or less

Good one-way deal

$148 or less
From Washington, D.C. (WAS) to San Antonio
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One-way flight from Washington, D.C. (WAS) to San Antonio
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Highest demand for flights based on searches. 7% potential increase in price ($29 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Washington, D.C. (WAS) to San Antonio.
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Price to beat on a one-way flight from Washington, D.C. (WAS) to San Antonio.
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Find flight deals from Washington, D.C. to San Antonio

Cheapest flights from Washington, D.C. to San Antonio
Explore the most affordable flight options available from Washington, D.C. to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Booking.com deal was found by Cheapflights users on 9/8. 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 10/316:00 amBWI - SAT
1 stop11h 40mFrontier
Mon 11/35:35 pmSAT - BWI
1 stop5h 38mFrontier
Deal found 9/8$144
This Frontier deal was found by Cheapflights users on 9/9. 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.
Fri 11/75:50 amBWI - SAT
1 stop11h 50mFrontier
Mon 11/105:35 pmSAT - BWI
1 stop5h 38mFrontier
Deal found 9/9$153
This Mytrip deal was found by Cheapflights users on 9/11. 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.
Thu 10/304:15 pmBWI - SAT
1 stop25h 25mFrontier
Mon 11/35:35 pmSAT - BWI
1 stop5h 38mFrontier
Deal found 9/11$163
This Booking.com deal was found by Cheapflights users on 9/10. 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.
Thu 10/28:14 pmBWI - SAT
1 stop21h 21mFrontier
Mon 10/65:40 pmSAT - BWI
1 stop6h 13mFrontier
Deal found 9/10$164
This Mytrip deal was found by Cheapflights users on 9/10. 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.
Sun 9/216:27 pmBWI - SAT
1 stop25h 48mFrontier
Thu 9/2511:33 amSAT - BWI
1 stop11h 44mFrontier
Deal found 9/10$166
This Booking.com deal was found by Cheapflights users on 9/10. 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.
Sun 9/216:27 pmBWI - SAT
1 stop25h 48mFrontier
Fri 9/265:40 pmSAT - BWI
1 stop5h 37mFrontier
Deal found 9/10$167
This Mytrip deal was found by Cheapflights users on 9/8. 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.
Thu 10/236:37 pmBWI - SAT
1 stop24h 38mFrontier
Sun 10/268:26 pmSAT - BWI
1 stop20h 18mFrontier
Deal found 9/8$173
This Kiwi.com deal was found by Cheapflights users on 9/9. 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.
Fri 10/2412:29 pmBWI - SAT
1 stop6h 46mFrontier
Sun 10/268:26 pmSAT - BWI
1 stop20h 18mFrontier
Deal found 9/9$180
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 10/29:38 amBWI - SAT
1 stop9h 34mMultiple Airlines
Mon 10/65:40 pmSAT - BWI
1 stop6h 13mMultiple Airlines
Deal found 9/10$181
This Booking.com deal was found by Cheapflights users on 9/10. 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.
Thu 9/258:14 pmBWI - SAT
1 stop21h 16mFrontier
Mon 9/295:40 pmSAT - BWI
1 stop24h 27mFrontier
Deal found 9/10$184
This Southwest deal was found by Cheapflights users on 9/9. 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 10/27:25 pmDCA - SAT
1 stop5h 45mSouthwest
Wed 10/86:15 amSAT - DCA
2 stops6h 45mSouthwest
Deal found 9/9$235
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 10/26:10 amIAD - SAT
1 stop5h 38mFrontier
Wed 10/83:59 pmSAT - IAD
2 stops19h 23mFrontier
Deal found 9/9$235

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington, D.C. 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 September 11, 2025.
Use the filters below to find and compare flights from Washington, D.C. to San Antonio that are best for you.

Fly from

Washington, D.C.

Fly to

San Antonio

Route

Depart

Return

Price

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Thu 10/2

7:25 pm-12:10 am

1 stop5h 45m

San Antonio

Wed 10/8

6:15 am-2:00 pm

2 stops6h 45m

$235

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Wed 10/22

9:45 am-3:56 pm

1 stop7h 11m

San Antonio

Wed 10/29

6:41 am-2:53 pm

1 stop7h 12m

$237

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Thu 10/16

6:00 am-10:40 am

1 stop5h 40m

San Antonio

Tue 10/21

4:35 pm-10:59 pm

1 stop5h 24m

$237

Washington, D.C.San Antonio

IAD - SAT

IADSAT

Washington, D.C. Dulles Intl

Wed 11/5

6:15 am-1:41 pm

1 stop8h 26m

San Antonio

Tue 11/11

12:45 pm-11:29 pm

1 stop9h 44m

$237

Washington, D.C.San Antonio

IAD - SAT

IADSAT

Washington, D.C. Dulles Intl

Wed 2/18

6:10 am-11:33 am

1 stop6h 23m

San Antonio

Thu 2/26

12:10 pm-7:12 pm

1 stop6h 02m

$237

Washington, D.C.San Antonio

IAD - SAT

IADSAT

Washington, D.C. Dulles Intl

Wed 10/22

10:11 am-4:07 pm

1 stop6h 56m

San Antonio

Wed 10/29

6:41 am-2:38 pm

1 stop6h 57m

$237

Washington, D.C.San Antonio

IAD - SAT

IADSAT

Washington, D.C. Dulles Intl

Tue 2/17

5:00 pm-10:19 pm

1 stop6h 19m

San Antonio

Thu 2/26

4:00 pm-11:02 pm

1 stop6h 02m

$237

Washington, D.C.San Antonio

IAD - SAT

IADSAT

Washington, D.C. Dulles Intl

Sat 11/1

5:10 pm-10:42 pm

1 stop6h 32m

San Antonio

Tue 11/4

10:54 am-4:57 pm

1 stop5h 03m

$237

Washington, D.C.San Antonio

IAD - SAT

IADSAT

Washington, D.C. Dulles Intl

Sat 11/1

8:15 am-11:06 am

Nonstop3h 51m

San Antonio

Tue 11/4

1:23 pm-11:15 pm

1 stop8h 52m

$245

Washington, D.C.San Antonio

IAD - SAT

IADSAT

Washington, D.C. Dulles Intl

Thu 10/30

8:15 am-11:06 am

Nonstop3h 51m

San Antonio

Mon 11/3

7:07 am-11:19 am

Nonstop3h 12m

$249

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 60 results
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The best insider tips for Washington, D.C. to San Antonio flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Washington, D.C. to San Antonio trip
Airports
IAD

Security queues at IAD can be long. Pay attention to signage for the correct train to your concourse to save time.

Read more about IADby Ramsey Qubein
SAT

For quick downtown access from SAT, rideshare services are convenient and pick up on Terminal A's lower level.

Read more about SATby Ramsey Qubein
Our travel experts
Ramsey Qubein

Ramsey Qubein

Expert on SAT and IAD

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

Best time to book a flight from Washington, D.C. to San Antonio

Have a flexible travel schedule? Discover the best time to fly to San Antonio from Washington, D.C. 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. to San Antonio

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

Use this chart to determine the optimal time to book a round-trip flight from Washington, D.C. to San Antonio. Price data was last updated on August 29, 2025.

The price you pay for your flight from Washington, D.C. to San Antonio may vary depending on when you book. For the best chance of a lower fare, look to book 80 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, August is the cheapest month in which you can book a flight from Washington, D.C. to San Antonio (average of $295). Flying from Washington, D.C. to San Antonio in March is currently the most expensive (average of $376). 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 WAS to SAT?

Find hourly flight availability from Washington, D.C. 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 September 11, 2025.

It’s typically best to fly out from Washington, D.C. to San Antonio in the evening. Doing so could potentially save you 27% on the flight price compared to flying in the morning, which is usually more expensive.

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

Use this chart to determine the cheapest time to fly round-trip from Washington, D.C. to San Antonio. Price data was last updated on September 7, 2025.

Travelers seeking maximum savings on their Washington, D.C. to San Antonio flight should consider departing on Wednesday evenings when fares are most often at their lowest. Monday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Washington, D.C. to San Antonio

Explore weekly flight availability from Washington, D.C. to San Antonio. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated September 11, 2025.

The most flights from WAS to SAT are scheduled on a Monday (8 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (6 on average).

What’s the top layover airport for flights from Washington, D.C. to San Antonio?

Share of 1-stop round-trip flights from Washington, D.C. to San Antonio chosen by Cheapflights users in the past 12 months, using the same layover each way.

Phoenix (PHX) – chosen by Cheapflights users on 40% of 1-stop itineraries from Washington, D.C. to San Antonio on Cheapflights.

What’s the cheapest layover airport for flights from Washington, D.C. to San Antonio?

Average round-trip fare for 1-stop flights from Washington, D.C. to San Antonio, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Phoenix (PHX) is the most affordable 1-stop option, with an average round-trip price of $288.

What’s the fastest layover option from Washington, D.C. to San Antonio?

Shortest average travel time for 1-stop one-way flights from Washington, D.C. to San Antonio, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Dallas (DAL) have the shortest average one-way travel time for 1-stop routes: 5h 40m.

Which airport typically offers the quickest layover for flights from Washington, D.C. to San Antonio?

Average layover duration for 1-stop one-way flights from Washington, D.C. to San Antonio, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Phoenix (PHX) offer the fastest connection on this route, with an average layover time of 1h 28m.

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 September 11, 2025.
Read reviews from past customers who have flown Southwest, Delta, and United Airlines from Washington, D.C. to San Antonio. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,248 reviews

Crew

8.6

Overall

8.0

Comfort

8.0

Food

7.0

Boarding

8.1

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
4,248 reviews
Southwest
8.0
Very good
4,248 reviews

Crew

8.6

Overall

8.0

Comfort

8.0

Food

7.0

Boarding

8.1

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
8.0
Very good
7,960 reviews
Southwest
8.0
Very good
4,248 reviews

Crew

8.6

Overall

8.0

Comfort

8.0

Food

7.0

Boarding

8.1

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
8,937 reviews
Southwest
8.0
Very good
4,248 reviews

Crew

8.6

Overall

8.0

Comfort

8.0

Food

7.0

Boarding

8.1

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
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,248 reviews

Crew

8.6

Overall

8.0

Comfort

8.0

Food

7.0

Boarding

8.1

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
Spirit Airlines
6.3
Okay
8,023 reviews
Southwest
8.0
Very good
4,248 reviews

Crew

8.6

Overall

8.0

Comfort

8.0

Food

7.0

Boarding

8.1

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 Washington, D.C. 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.?

    If you book a flight to San Antonio from Washington, D.C., you will be flying to San Antonio, which is the city’s only airport. San Antonio (SAT) is located 7.6 mi from the center of San Antonio. There are 7 flights from Washington, D.C. to San Antonio per day from 6 different airlines.

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

    Departing from Washington, D.C. to San Antonio will take you 5h 45m. There are 1378 mi between Washington, D.C. and San Antonio. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    According to our current data, Frontier ($128), Southwest ($181), and American Airlines ($218) offers the cheapest pricing from Washington, D.C. to San Antonio. You may be able to fly from Washington, D.C. to San Antonio for 66% less than the average price by searching for these airlines.

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

    To fly one-way, consider booking your trip with Southwest, which is currently one of the cheapest options available, starting at $80. Spirit Airlines flights start at $108 while deals on Delta start at $119 one-way.

  • What are the most popular routes from Washington, D.C. to San Antonio?

    The most popular flight routes from Washington, D.C. to San Antonio are Washington, D.C. Dulles Intl - San Antonio, Washington, D.C. Reagan-National - San Antonio and Baltimore/Washington - San Antonio.

  • What are the most reliable airlines from Washington, D.C. to San Antonio?

    The top 3 most reliable airlines when flying from Washington, D.C. to San Antonio are Mesa Airlines (100%), United Airlines (91%) and Air Canada (83%).

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

    Looking at all options, your cheapest flight can be booked for $148. While the most popular route (Washington, D.C. Dulles Intl - San Antonio) can be booked for $174 on average, our data indicates $317 when flying from Washington, D.C. to San Antonio.

  • Can I find deals for flights from Washington, D.C. to San Antonio that include hotel bookings?

    Yes. In addition to deals on Washington, D.C. to San Antonio flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Washington, D.C. to San Antonio?

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

  • Can I find deals for business class flights from Washington, D.C. to San Antonio?

    Yes. Cheapflights offers flight deals from Washington, D.C. 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. to San Antonio?

    Currently, August is the cheapest month in which you can book a flight from Washington, D.C. to San Antonio (average of $295). Flying from Washington, D.C. to San Antonio in March is currently the most expensive (average of $376). 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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Alternative routes for Washington, D.C. to San Antonio

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Washington, D.C. to San Antonio

Discover the top 6 airlines that operate flights from Washington, D.C. 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$86Average$223FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$117Average$232FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$158Average$362FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$181Average$388FlexibilityNo cancel feeOn-time63%
DeltaCheapest$238Average$364FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$240Average$401FlexibilityNo cancel feeOn-time69%

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