HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Washington, D.C.

$80+ Cheap flights from San Antonio (SAT) to Washington, D.C. (WAS)

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 5/21. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — WAS
May 1 — May 81
Fri 5/1
Fri 5/8
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from San Antonio to Washington, D.C. 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 San Antonio to Washington, D.C. are usually found in June or September, booked 82 days in advance, depart on a Thursday or Friday and return on a Thursday

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

Cheapest flights from San Antonio to Washington, D.C.
Explore the most affordable flight options available from San Antonio to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 1, 2026.

This Frontier deal was found by Cheapflights users on 3/30. 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.
Mon 4/136:00 pm
SAT
-
BWI
1 stop5h 44m
Frontier
Sat 4/189:38 am
BWI
-
SAT
1 stop8h 57m
Frontier
Deal found 3/30$200
This CheapOair deal was found by Cheapflights users on 3/30. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/110:22 am
SAT
-
BWI
1 stop7h 23m
Multiple Airlines
Mon 4/611:30 am
BWI
-
SAT
1 stop6h 35m
Multiple Airlines
Deal found 3/30$212
This Kiwi.com deal was found by Cheapflights users on 3/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/172:12 pm
SAT
-
BWI
1 stop5h 52m
Multiple Airlines
Mon 4/2012:27 pm
BWI
-
SAT
2 stops27h 42m
Multiple Airlines
Deal found 3/30$222
This CheapOair deal was found by Cheapflights users on 3/30. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/210:22 am
SAT
-
BWI
1 stop12h 37m
Multiple Airlines
Mon 4/611:30 am
BWI
-
SAT
1 stop6h 35m
Multiple Airlines
Deal found 3/30$230
This CheapOair deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/11:22 pm
SAT
-
BWI
1 stop9h 37m
Multiple Airlines
Fri 4/175:35 pm
BWI
-
SAT
1 stop25h 00m
Multiple Airlines
Deal found 4/1$233
This Priceline deal was found by Cheapflights users on 3/30. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/1410:22 am
SAT
-
BWI
1 stop7h 23m
Multiple Airlines
Sat 4/189:38 am
BWI
-
SAT
1 stop8h 57m
Multiple Airlines
Deal found 3/30$238
This Kiwi.com deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/26:00 am
SAT
-
BWI
1 stop26h 15m
Multiple Airlines
Tue 5/58:52 am
BWI
-
SAT
2 stops11h 07m
Multiple Airlines
Deal found 3/31$254
This Kiwi.com deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/236:00 am
SAT
-
BWI
1 stop26h 37m
Multiple Airlines
Mon 4/278:44 pm
BWI
-
SAT
2 stops44h 09m
Multiple Airlines
Deal found 3/31$257
This Kiwi.com deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/13:00 pm
SAT
-
DCA
1 stop21h 00m
Frontier
Mon 5/46:00 pm
DCA
-
SAT
1 stop25h 59m
Frontier
Deal found 3/29$265
This Kiwi.com deal was found by Cheapflights users on 3/28. 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.
Mon 4/206:31 pm
SAT
-
DCA
2 stops17h 28m
Frontier
Tue 4/287:59 am
DCA
-
SAT
1 stop8h 10m
Frontier
Deal found 3/28$267
This Frontier deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/118:56 pm
SAT
-
IAD
1 stop9h 54m
Frontier
Mon 6/159:20 am
IAD
-
SAT
1 stop11h 51m
Frontier
Deal found 3/31$270
This Expedia deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/26:45 am
SAT
-
DCA
1 stop28h 17m
Frontier
Sun 4/57:00 am
DCA
-
SAT
1 stop18h 19m
Frontier
Deal found 3/31$270

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

Discover tips and strategies to find the most affordable flight options for your journey from San Antonio (SAT) to Washington, D.C. (WAS). 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 April 1, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$200
(Frontier)

One-way from

$80
(Booking.com)

Popular in

March

Cheapest in

June

Average price

$329

Good round-trip deal

$349 or less

Good one-way deal

$191 or less
Provider with most accurate pricing for San Antonio-Washington, D.C. (WAS) flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Antonio-Washington, D.C. (WAS) flights.
Search Deals
From San Antonio to Washington, D.C. (WAS)
Search Deals
One-way flight from San Antonio to Washington, D.C. (WAS)
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($29 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals
Price to beat on a round-trip flight from San Antonio to Washington, D.C. (WAS).
Search Deals
Price to beat on a one-way flight from San Antonio to Washington, D.C. (WAS).
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Antonio to Washington, D.C. 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 April 1, 2026.
Use the filters below to find and compare flights from San Antonio to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San AntonioWashington, D.C.

SAT - IAD

SATIAD

San Antonio

Tue 6/30

7:00 am-11:27 am

Nonstop3h 27m

Washington, D.C. Dulles Intl

Sun 7/19

8:20 am-10:54 am

Nonstop3h 34m

$309

San AntonioWashington, D.C.

SAT - IAD

SATIAD

San Antonio

Tue 4/21

12:09 pm-4:30 pm

Nonstop3h 21m

Washington, D.C. Dulles Intl

Thu 5/14

6:50 pm-9:35 pm

Nonstop3h 45m

$309

San AntonioWashington, D.C.

SAT - DCA

SATDCA

San Antonio

Sat 4/25

1:20 pm-9:30 pm

2 stops7h 10m

Washington, D.C. Reagan-National

Wed 4/29

6:10 am-10:25 am

1 stop5h 15m

$310

San AntonioWashington, D.C.

SAT - DCA

SATDCA

San Antonio

Sat 5/2

1:20 pm-9:30 pm

2 stops7h 10m

Washington, D.C. Reagan-National

Tue 5/5

6:10 am-10:25 am

1 stop5h 15m

$310

San AntonioWashington, D.C.

SAT - IAD

SATIAD

San Antonio

Thu 6/25

12:01 pm-4:28 pm

Nonstop3h 27m

Washington, D.C. Dulles Intl

Tue 6/30

2:53 pm-7:50 pm

1 stop5h 57m

$319

San AntonioWashington, D.C.

SAT - IAD

SATIAD

San Antonio

Tue 6/30

5:12 pm-12:44 am

1 stop6h 32m

Washington, D.C. Dulles Intl

Tue 9/1

4:00 pm-8:10 pm

1 stop5h 10m

$323

San AntonioWashington, D.C.

SAT - DCA

SATDCA

San Antonio

Mon 6/1

5:45 pm-11:25 pm

1 stop4h 40m

Washington, D.C. Reagan-National

Thu 6/4

6:15 am-10:25 am

1 stop5h 10m

$324

San AntonioWashington, D.C.

SAT - DCA

SATDCA

San Antonio

Wed 5/13

11:20 am-6:10 pm

1 stop5h 50m

Washington, D.C. Reagan-National

Mon 5/18

6:10 am-1:15 pm

1 stop8h 05m

$329

San AntonioWashington, D.C.

SAT - IAD

SATIAD

San Antonio

Sat 4/25

7:15 am-11:36 am

Nonstop3h 21m

Washington, D.C. Dulles Intl

Wed 4/29

8:30 am-3:46 pm

1 stop8h 16m

$332

San AntonioWashington, D.C.

SAT - DCA

SATDCA

San Antonio

Sat 5/16

9:15 am-5:35 pm

2 stops7h 20m

Washington, D.C. Reagan-National

Sat 5/23

4:55 pm-9:30 pm

1 stop5h 35m

$334

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

Showing 1-10 of 59 resultsSorted by cheapest first
1
2
3
...
6

Compare providers for flights from San Antonio to Washington, D.C.

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 San Antonio to Washington, D.C. in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*2 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
PricelinePrice Accuracy1 starTrust 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 San Antonio-Washington, D.C. flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Antonio-Washington, D.C. flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Antonio-Washington, D.C. flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Antonio-Washington, D.C. 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 San Antonio-Washington, D.C. 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 San Antonio to Washington, D.C.

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

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

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

Booking 81 days in advance of your planned departure date is, on average, the best time to get cheap flights from San Antonio to Washington, D.C.. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, November is the cheapest month in which you can book a flight from San Antonio to Washington, D.C. (average of $72). Flying from San Antonio to Washington, D.C. in February is currently the most expensive (average of $200). 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 SAT to WAS?

Find hourly flight availability from San Antonio to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 1, 2026.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 37% on flights from San Antonio to Washington, D.C. by exploring options for tickets at noon.

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

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

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

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

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

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

Denver (DEN) is the most affordable 1-stop option, with an average round-trip price of $184.

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

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

Flights via Houston (IAH) have the shortest average one-way travel time for 1-stop routes: 4h 57m.

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

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

Flights via Houston (IAH) offer the fastest connection on this route, with an average layover time of 0h 53m.

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

Get insights into the airlines that provide service to Washington, D.C.. 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 Washington, D.C.. Reviews last updated April 1, 2026.
Peruse reviews from past customers who have flown with Southwest,Delta, andUnited Airlines from San Antonio to Washington, D.C. to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,334 reviews

Overall

8.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Boarding

8.1

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
4,334 reviews
Southwest
8.0
Very good
4,334 reviews

Overall

8.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Boarding

8.1

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
8,367 reviews
Southwest
8.0
Very good
4,334 reviews

Overall

8.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Boarding

8.1

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
9,529 reviews
Southwest
8.0
Very good
4,334 reviews

Overall

8.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Boarding

8.1

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
11,545 reviews
Southwest
8.0
Very good
4,334 reviews

Overall

8.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Boarding

8.1

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.
Spirit Airlines
6.3
Okay
8,572 reviews
Southwest
8.0
Very good
4,334 reviews

Overall

8.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Boarding

8.1

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 San Antonio to Washington, D.C.. 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 from for flights from San Antonio to Washington, D.C.?

    Located just 7.6 mi from the city center, San Antonio is the airport most travelers will use when flying to Washington, D.C. from San Antonio. Booking flights from San Antonio (SAT) to Washington, D.C. should be relatively easy as there are 5 daily outbound flights to Washington, D.C. from 6 different airlines.

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

    A quick flight from San Antonio to Washington, D.C. can take about 3h 27m. United Airlines provides one of the quickest options available for as low as $309. San Antonio and Washington, D.C. are separated by a distance of 1360 mi. This flight may include one or multiple stops.

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

    Delta, at $177, was found to be the cheapest airline from San Antonio to Washington, D.C..Alternate airlines to your destination round-trip include American Airlines and Southwest. You may be able to fly from San Antonio to Washington, D.C. for 45% less than the average price by searching for these airlines.

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

    One-way options have recently been found by users for as low as $80 on Southwest. Other airlines that offer cheap prices include American Airlines from $99 and United Airlines from $105 one-way.

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

    When deciding which route to take from San Antonio to Washington, D.C. consider San Antonio - Washington, D.C. Dulles Intl, San Antonio - Washington, D.C. Reagan-National or San Antonio - Baltimore/Washington as they are the most popular.

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

    Before booking your flight to Washington, D.C. from San Antonio, check out the most reliable airlines to get you to your destination on time: Mesa Airlines (92%), United Airlines (91%), Air Canada( 90%).

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

    While on average a flight from San Antonio to Washington, D.C. is generally $798, our data shows the cheapest flight currently is $228. When looking at the most popular route, (San Antonio - Washington, D.C. Dulles Intl), you can expect to pay $273 for that flight.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from San Antonio to Washington, D.C. (average of $72). Flying from San Antonio to Washington, D.C. in February is currently the most expensive (average of $200). 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 Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
Woodbridge
Tysons
Owings Mills
Arlington
Springfield
Silver Spring
Herndon
Hyattsville
Hanover
Laurel
Rockville
Upper Marlboro
Fredericksburg
Largo
Bowie
Clinton
Towson
Cordova
Manassas

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.

Top 6 airlines flying from San Antonio to Washington, D.C.

Discover the top 6 airlines that operate flights from San Antonio to Washington, D.C.. 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 April 1, 2026.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$69Average$206FlexibilityNo cancel feeOn-time65%
FrontierCheapest$72Average$195FlexibilityNo cancel feeOn-time62%
DeltaCheapest$177Average$342FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$185Average$389FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$204Average$353FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$226Average$381FlexibilityNo 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.