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$104+ 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 6/3. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — SAT
Jun 10 — Jun 171
Wed 6/10
Wed 6/17
1 adult, Economy
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1. Tell us where you want to go

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3. Compare prices and book

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Cheapflights Tip: The best prices from Washington, D.C. to San Antonio are usually found in August or October, booked 60 days in advance, depart on a Thursday or Friday and return on a Thursday

Cheap 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 May 11, 2026.

This Expedia deal was found by Cheapflights users on 5/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/79:28 pm
BWI
-
SAT
1 stop19h 13m
Frontier
Mon 8/104:26 pm
SAT
-
BWI
1 stop15h 38m
Frontier
Deal found 5/11$244
This Booking.com deal was found by Cheapflights users on 5/8. 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 7/243:21 pm
BWI
-
SAT
1 stop25h 20m
Frontier
Mon 7/274:26 pm
SAT
-
BWI
1 stop15h 38m
Frontier
Deal found 5/8$282
This Southwest deal was found by Cheapflights users on 5/8. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/146:35 pm
DCA
-
SAT
1 stop4h 45m
Southwest
Tue 7/216:10 am
SAT
-
DCA
1 stop4h 55m
Southwest
Deal found 5/8$304
This Trip.com deal was found by Cheapflights users on 5/8. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/231:59 pm
DCA
-
SAT
1 stop30h 00m
Frontier
Fri 5/297:54 pm
SAT
-
DCA
1 stop20h 05m
Frontier
Deal found 5/8$305
This United Airlines deal was found by Cheapflights users on 5/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/118:25 am
IAD
-
SAT
Nonstop3h 34m
United Airlines
Wed 6/176:40 am
SAT
-
IAD
1 stop8h 50m
United Airlines
Deal found 5/9$305
This Trip.com deal was found by Cheapflights users on 5/7. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/279:12 am
IAD
-
SAT
1 stop12h 02m
Frontier
Fri 5/298:59 pm
SAT
-
IAD
1 stop10h 13m
Frontier
Deal found 5/7$307
This Delta deal was found by Cheapflights users on 5/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/106:06 am
DCA
-
SAT
1 stop6h 44m
Delta
Wed 6/172:30 pm
SAT
-
DCA
1 stop7h 56m
Delta
Deal found 5/11$309
This United Airlines deal was found by Cheapflights users on 5/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/108:25 am
IAD
-
SAT
Nonstop3h 34m
United Airlines
Sun 6/147:00 am
SAT
-
IAD
Nonstop3h 27m
United Airlines
Deal found 5/11$309
This American Airlines deal was found by Cheapflights users on 5/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/316:32 pm
DCA
-
SAT
Nonstop3h 43m
American Airlines
Sat 6/66:15 am
SAT
-
DCA
Nonstop3h 19m
American Airlines
Deal found 5/10$310
This Priceline deal was found by Cheapflights users on 5/7. 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.
Tue 5/269:12 am
IAD
-
SAT
1 stop12h 02m
Frontier
Wed 5/278:59 pm
SAT
-
IAD
1 stop10h 13m
Frontier
Deal found 5/7$310
This American Airlines deal was found by Cheapflights users on 5/7. 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 5/286:32 pm
DCA
-
SAT
Nonstop3h 43m
American Airlines
Thu 6/46:15 am
SAT
-
DCA
Nonstop3h 19m
American Airlines
Deal found 5/7$312
This American Airlines deal was found by Cheapflights users on 5/7. 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 11/55:30 pm
DCA
-
SAT
Nonstop3h 48m
American Airlines
Sun 11/86:49 am
SAT
-
DCA
Nonstop3h 11m
American Airlines
Deal found 5/7$313

Find 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 May 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$244
(Expedia)

One-way from

$104
(Super.com)

Popular in

March

Cheapest in

August

Average price

$378

Good round-trip deal

$339 or less

Good one-way deal

$188 or less
Provider with most accurate pricing for Washington, D.C. (WAS)-San Antonio flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-San Antonio flights.
Search Deals
From Washington, D.C. (WAS) to San Antonio
Search Deals
One-way flight from Washington, D.C. (WAS) to San Antonio
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($28 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals
Price to beat on a round-trip flight from Washington, D.C. (WAS) to San Antonio.
Search Deals
Price to beat on a one-way flight from Washington, D.C. (WAS) to San Antonio.
Search Deals

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 May 11, 2026.
Use the filters below to find and compare flights from Washington, D.C. to San Antonio that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.San Antonio

IAD - SAT

IADSAT

Washington, D.C. Dulles Intl

Tue 7/7

8:25 am-10:59 am

Nonstop3h 34m

San Antonio

Tue 7/14

4:18 pm-10:44 pm

1 stop5h 26m

$309

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Mon 6/22

6:15 am-10:25 am

1 stop5h 10m

San Antonio

Tue 6/30

2:40 pm-8:50 pm

1 stop5h 10m

$314

Washington, D.C.San Antonio

IAD - SAT

IADSAT

Washington, D.C. Dulles Intl

Wed 8/12

2:43 pm-8:52 pm

1 stop7h 09m

San Antonio

Sat 8/15

7:00 am-11:20 am

Nonstop3h 20m

$319

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Mon 6/22

6:15 am-10:25 am

1 stop5h 10m

San Antonio

Thu 6/25

5:30 am-12:20 pm

1 stop5h 50m

$324

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Sat 6/6

8:20 am-3:39 pm

1 stop8h 19m

San Antonio

Fri 6/12

5:57 pm-11:59 pm

1 stop5h 02m

$324

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Fri 7/24

7:37 pm-12:24 am

1 stop5h 47m

San Antonio

Tue 7/28

6:40 am-12:42 pm

1 stop5h 02m

$329

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

Thu 7/23

6:00 am-10:34 am

1 stop5h 34m

San Antonio

Sat 7/25

10:38 am-5:30 pm

1 stop5h 52m

$329

Washington, D.C.San Antonio

IAD - SAT

IADSAT

Washington, D.C. Dulles Intl

Thu 7/23

12:37 pm-5:11 pm

1 stop5h 34m

San Antonio

Sat 7/25

10:38 am-4:30 pm

1 stop4h 52m

$329

Washington, D.C.San Antonio

IAD - SAT

IADSAT

Washington, D.C. Dulles Intl

Thu 10/15

6:10 am-11:20 am

1 stop6h 10m

San Antonio

Sun 10/18

4:25 pm-12:05 am

1 stop6h 40m

$329

Washington, D.C.San Antonio

IAD - SAT

IADSAT

Washington, D.C. Dulles Intl

Fri 7/24

7:26 pm-12:24 am

1 stop5h 58m

San Antonio

Tue 7/28

7:40 am-2:01 pm

1 stop5h 21m

$329

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/9

Showing 1-10 of 60 resultsSorted by cheapest first
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Compare providers for flights from Washington, D.C. 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 Washington, D.C. to San Antonio in May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
MytripPrice Accuracy3 starsTrust Score*3 stars

*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.-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.-San Antonio flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C.-San Antonio flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C.-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.-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 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?

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 61 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, May is the cheapest month in which you can book a flight from Washington, D.C. to San Antonio (average of $79). Flying from Washington, D.C. to San Antonio in March is currently the most expensive (average of $203). 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 May 11, 2026.

It’s typically best to fly out from Washington, D.C. to San Antonio in the afternoon. Doing so could potentially save you 15% on the flight price compared to flying at noon, which is usually more expensive.

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 May 11, 2026.

The most flights from WAS to SAT are scheduled on a Monday (12 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (5 on average).

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

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.

Dallas (DAL) – chosen by Cheapflights users on 67% 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 33m.

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 Dallas (DAL) offer the fastest connection on this route, with an average layover time of 0h 48m.

The best insider tips for Washington, D.C. to San Antonio flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Washington, D.C. to San Antonio trip
Our travel experts
Ramsey Qubein

Ramsey Qubein

Expert on SAT and IAD

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

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 May 11, 2026.
Read reviews from past customers who have flown Southwest,Delta, andUnited 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
4,295 reviews

Comfort

8.0

Overall

8.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Food

7.0

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
4,295 reviews
Southwest
8.0
Very good
4,295 reviews

Comfort

8.0

Overall

8.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Food

7.0

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
8,446 reviews
Southwest
8.0
Very good
4,295 reviews

Comfort

8.0

Overall

8.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Food

7.0

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
9,701 reviews
Southwest
8.0
Very good
4,295 reviews

Comfort

8.0

Overall

8.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Food

7.0

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
11,661 reviews
Southwest
8.0
Very good
4,295 reviews

Comfort

8.0

Overall

8.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Food

7.0

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.
Frontier
5.6
Fair
2,950 reviews
Southwest
8.0
Very good
4,295 reviews

Comfort

8.0

Overall

8.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Food

7.0

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 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 9 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 3h 34m. There are 1360 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 ($160), Southwest ($181), and American Airlines ($231) 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 56% 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 Frontier, which is currently one of the cheapest options available, starting at $72. American Airlines flights start at $115 while deals on Delta start at $124 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 (94%) and Air Canada (89%).

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

    Looking at all options, your cheapest flight can be booked for $188. While the most popular route (Washington, D.C. Dulles Intl - San Antonio) can be booked for $274 on average, our data indicates $402 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, May is the cheapest month in which you can book a flight from Washington, D.C. to San Antonio (average of $79). Flying from Washington, D.C. to San Antonio in March is currently the most expensive (average of $203). 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

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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 May 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$94Average$207FlexibilityNo cancel feeOn-time65%
FrontierCheapest$144Average$254FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$158Average$389FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$181Average$409FlexibilityNo cancel feeOn-time63%
DeltaCheapest$226Average$375FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$249Average$397FlexibilityNo cancel feeOn-time69%

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