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Cheap flights from San Antonio to Washington, D.C. from $71

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Antonio to Washington, D.C. departing on 11/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from San Antonio to Washington, D.C.

Cheap round-trip flights

Frontier Logo
11:33 am - 12:17 amSAT-BWI
11h 44m1 stop
Frontier Logo
6:22 am - 4:30 pmBWI-SAT
11h 08m1 stop
$144Frontier
Find Deal
Thu, Sep 25 - Mon, Sep 29
Frontier Logo
5:35 pm - 12:13 amSAT-BWI
5h 38m1 stop
Frontier Logo
9:13 am - 4:40 pmBWI-SAT
8h 27m1 stop
$153Frontier
Find Deal
Fri, Nov 7 - Mon, Nov 10
Southwest Logo
6:10 pm - 11:45 pmSAT-DCA
4h 35m1 stop
Southwest Logo
6:00 am - 10:30 amDCA-SAT
5h 30m1 stop
$199Southwest
Find Deal
Tue, Oct 28 - Fri, Oct 31
Southwest Logo
6:20 am - 3:05 pmSAT-DCA
7h 45m2 stops
Southwest Logo
6:00 am - 12:25 pmDCA-SAT
7h 25m2 stops
$201Southwest
Find Deal
Tue, Dec 2 - Sat, Dec 6
American Airlines Logo
6:35 am - 10:55 amSAT-DCA
3h 20mnonstop
American Airlines Logo
7:59 pm - 10:56 pmDCA-SAT
3h 57mnonstop
$235American Airlines
Find Deal
Sat, Oct 4 - Sat, Oct 11
Delta Logo
4:35 pm - 11:00 pmSAT-IAD
5h 25m1 stop
Delta Logo
7:35 pm - 12:20 amIAD-SAT
5h 45m1 stop
$237Delta
Find Deal
Thu, Oct 23 - Mon, Oct 27
Delta Logo
4:31 pm - 10:57 pmSAT-DCA
5h 26m1 stop
Delta Logo
6:20 pm - 12:20 amDCA-SAT
7h 00m1 stop
$237Delta
Find Deal
Thu, Oct 2 - Mon, Oct 6
United Airlines Logo
11:55 am - 4:16 pmSAT-IAD
3h 21mnonstop
United Airlines Logo
8:25 am - 10:58 amIAD-SAT
3h 33mnonstop
$249United Airlines
Find Deal
Wed, Oct 8 - Sun, Oct 12
American Airlines Logo
6:35 am - 10:50 amSAT-DCA
3h 15mnonstop
American Airlines Logo
7:45 pm - 10:25 pmDCA-SAT
3h 40mnonstop
$249American Airlines
Find Deal
Fri, Jan 30 - Sun, Feb 1
United Airlines Logo
11:45 am - 6:39 pmSAT-DCA
5h 54m1 stop
United Airlines Logo
5:00 pm - 10:55 pmDCA-SAT
6h 55m1 stop
$250United Airlines
Find Deal
Wed, Oct 8 - Wed, Oct 15

Frontier flights from San Antonio to Washington, D.C.

Our best Frontier deals on San Antonio to Washington, D.C. flight tickets
Frontier
Sep 25
SAT11:33 amSan Antonio
11h 44m
1 stop
BWI12:17 amBaltimore/Washington
Sep 29
BWI6:22 amBaltimore/Washington
11h 08m
1 stop
SAT4:30 pmSan Antonio
$144
Find similar
Frontier
Nov 7
SAT5:35 pmSan Antonio
5h 38m
1 stop
BWI12:13 amBaltimore/Washington
Nov 10
BWI9:13 amBaltimore/Washington
8h 27m
1 stop
SAT4:40 pmSan Antonio
$153
Find similar
Frontier
Oct 17
SAT5:45 pmSan Antonio
5h 28m
1 stop
BWI12:13 amBaltimore/Washington
Oct 20
BWI10:00 amBaltimore/Washington
7h 50m
1 stop
SAT4:50 pmSan Antonio
$160
Find similar

United Airlines flights from San Antonio to Washington, D.C.

Our best United Airlines deals on San Antonio to Washington, D.C. flight tickets
United Airlines
Oct 8
SAT11:55 amSan Antonio
3h 21m
IAD4:16 pmWashington, D.C. Dulles Intl
Oct 12
IAD8:25 amWashington, D.C. Dulles Intl
3h 33m
SAT10:58 amSan Antonio
$249
Find similar
United Airlines
Oct 8
SAT11:45 amSan Antonio
5h 54m
1 stop
DCA6:39 pmWashington, D.C. Reagan-National
Oct 15
DCA5:00 pmWashington, D.C. Reagan-National
6h 55m
1 stop
SAT10:55 pmSan Antonio
$250
Find similar
United Airlines
Oct 3
SAT7:00 amSan Antonio
3h 19m
IAD11:19 amWashington, D.C. Dulles Intl
Oct 5
IAD6:30 amWashington, D.C. Dulles Intl
6h 28m
1 stop
SAT11:58 amSan Antonio
$259
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated September 10, 2025.
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

San AntonioBaltimore

SAT - BWI

SATBWI

San Antonio

Thu 9/25

11:33 am-12:17 am

1 stop11h 44m

Baltimore/Washington

Mon 9/29

6:22 am-4:30 pm

1 stop11h 08m

$144

San AntonioBaltimore

SAT - BWI

SATBWI

San Antonio

Fri 11/7

5:35 pm-12:13 am

1 stop5h 38m

Baltimore/Washington

Mon 11/10

9:13 am-4:40 pm

1 stop8h 27m

$153

San AntonioWashington, D.C.

SAT - DCA

SATDCA

San Antonio

Tue 10/28

6:10 pm-11:45 pm

1 stop4h 35m

Washington, D.C. Reagan-National

Fri 10/31

6:00 am-10:30 am

1 stop5h 30m

$199

San AntonioWashington, D.C.

SAT - DCA

SATDCA

San Antonio

Tue 12/2

6:20 am-3:05 pm

2 stops7h 45m

Washington, D.C. Reagan-National

Sat 12/6

6:00 am-12:25 pm

2 stops7h 25m

$201

San AntonioWashington, D.C.

SAT - DCA

SATDCA

San Antonio

Sat 10/4

6:35 am-10:55 am

Nonstop3h 20m

Washington, D.C. Reagan-National

Sat 10/11

7:59 pm-10:56 pm

Nonstop3h 57m

$235

San AntonioWashington, D.C.

SAT - IAD

SATIAD

San Antonio

Thu 10/23

4:35 pm-11:00 pm

1 stop5h 25m

Washington, D.C. Dulles Intl

Mon 10/27

7:35 pm-12:20 am

1 stop5h 45m

$237

San AntonioWashington, D.C.

SAT - DCA

SATDCA

San Antonio

Thu 10/2

4:31 pm-10:57 pm

1 stop5h 26m

Washington, D.C. Reagan-National

Mon 10/6

6:20 pm-12:20 am

1 stop7h 00m

$237

San AntonioWashington, D.C.

SAT - IAD

SATIAD

San Antonio

Wed 10/8

11:55 am-4:16 pm

Nonstop3h 21m

Washington, D.C. Dulles Intl

Sun 10/12

8:25 am-10:58 am

Nonstop3h 33m

$249

San AntonioWashington, D.C.

SAT - DCA

SATDCA

San Antonio

Fri 1/30

6:35 am-10:50 am

Nonstop3h 15m

Washington, D.C. Reagan-National

Sun 2/1

7:45 pm-10:25 pm

Nonstop3h 40m

$249

San AntonioWashington, D.C.

SAT - DCA

SATDCA

San Antonio

Wed 10/8

11:45 am-6:39 pm

1 stop5h 54m

Washington, D.C. Reagan-National

Wed 10/15

5:00 pm-10:55 pm

1 stop6h 55m

$250

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from San Antonio to Washington, D.C.

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Washington, D.C.?

The month of June is, on average, the cheapest month to fly to Washington, D.C. from San Antonio, with most prices found around $264. If you’re not able to fly to Washington, D.C. in June, then September is your next best option. Flight prices from San Antonio to Washington, D.C. during September average around $288.

What is the cheapest day to depart on your flight to Washington, D.C.?

On average, the least expensive day to fly to Washington, D.C. from San Antonio is on a Thursday. momondo users have found tickets for Thursday departures for as low as $408. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from San Antonio to Washington, D.C. for around $672.

What is the cheapest time of day to depart on your flight to Washington, D.C.?

At noon is the cheapest time of day to fly from San Antonio to Washington, D.C. when you can find flight prices for as low as $308. Flying to Washington, D.C. at noon is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the afternoon because they tend to be around $987. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest San Antonio to Washington, D.C. flight route?

Fly from San Antonio to Washington, D.C. Reagan-National for the best San Antonio - Washington, D.C. flight prices

How far in advance should I book a flight to Washington, D.C.?

You are more likely to see cheaper flights to Washington, D.C. from San Antonio when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. for around $383 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. from San Antonio for as low as $250 on momondo.

What cabin class options are available on San Antonio to Washington, D.C. flights?

There are 4 cabin classes available to choose from on San Antonio to Washington, D.C. flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on San Antonio to Washington, D.C. flights?

No. A direct flight is the cheapest option for a flight between San Antonio to Washington, D.C..

How have San Antonio to Washington, D.C. flight prices changed over time?

As of September 2025, prices for San Antonio to Washington, D.C. flights are approximately 73% more expensive when compared to flights at the same time last year.

When to book flights from San Antonio to Washington, D.C.

Are you open to changing your travel dates? Check out the ideal times to fly from San Antonio to Washington, D.C. according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap San Antonio to Washington, D.C. (SAT to WAS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from San Antonio to Washington, D.C.

Best Price Found

$189

Fastest flight time

3h 09m

Direct flights

Every day

Airports in Washington, D.C.

3 airports
The best one-way flight to Washington, D.C. from San Antonio in the past 72 hours is $189. The best round-trip flight deal from San Antonio to Washington, D.C. found on momondo in the last 72 hours is $249.
The fastest flight from San Antonio to Washington, D.C. takes 3h 09m
Direct flights go from San Antonio to Washington, D.C. every day.
There are 3 airports near Washington, D.C.: Washington, D.C. Reagan-National (DCA), Baltimore/Washington (BWI), Washington, D.C. Dulles Intl (IAD)
Search flight deals

  • How far is San Antonio to Washington, D.C. by plane?

    The distance between San Antonio and Washington, D.C. is about 1384.8 mi. A reasonable flight in good conditions will take 3h 12m.

  • When did momondo last update prices for flights from San Antonio Airport to Washington, D.C.?

    Prices for flights from San Antonio Airport to Washington, D.C. are refreshed on a daily basis.

  • How many operators does momondo search for flights from San Antonio Airport to Washington, D.C.?

  • How old do you have to be to fly from San Antonio Airport to Washington, D.C.?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from San Antonio Airport to Washington, D.C..

  • What documentation or ID do you need to fly to Washington, D.C.?

    The required travel and health documents for your Washington, D.C. trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Washington, D.C.. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from San Antonio to Washington, D.C.?

  • What is the most popular airline from San Antonio to Washington, D.C.?

Best airlines flying from San Antonio to Washington, D.C.

Compare and see reviews for airlines that fly from San Antonio to Washington, D.C. with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $96Free CancellationRating
5.8
3,181 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $107Free CancellationRating
6.3
8,024 reviews
Search Spirit Airlines flights
American AirlinesPriceFrom $200Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $204Free CancellationRating
8.0
4,249 reviews
Search Southwest flights
DeltaPriceFrom $205Free CancellationRating
7.9
7,963 reviews
Search Delta flights
United AirlinesPriceFrom $237Free CancellationRating
7.4
8,937 reviews
Search United Airlines flights

  • Southwest Flights From San Antonio to Washington, D.C.

    The lowest priced Southwest flight from San Antonio to Washington, D.C. from the last 72 hours was $204. Generally, Southwest has 7 flights on this route every week with an average price of $425. Southwest is rated 8.0/10 by our users.

  • United Airlines Flights From San Antonio to Washington, D.C.

    Across 8,937 United Airlines reviews on momondo, the average score is 7.4/10. United Airlines flies from San Antonio to Washington, D.C. about 18 times each week, with ticket deals ranging from $237 to $395. Price data is based on momondo searches in the last 72 hours.

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
Gettysburg
National Harbor
Arlington
Woodbridge
Waldorf
Tysons
Laurel
Colonial Beach
Silver Spring
Fredericksburg
Towson
Rockville
Manassas
Reston
Fairfax
Gaithersburg
Glen Burnie
Springfield
Linthicum Heights

Why use momondo?

Why should I use momondo to find a flight deal from San Antonio to Washington, D.C.?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from San Antonio to Washington, D.C.. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from San Antonio to Washington, D.C. with flexible booking policies on momondo?

Flights from San Antonio to Washington, D.C. with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from San Antonio to Washington, D.C.?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Washington, D.C. from San Antonio.

I’m not ready to book a flight from San Antonio to Washington, D.C. right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Washington, D.C. from San Antonio. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Washington, D.C. trip

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Find better results for your trip to the United States

Fly into one of these airports located in Washington, D.C.

Airports listed have a maximum distance of 22.4 mi from Washington, D.C.
Washington, D.C. Reagan-National Airport
Washington, D.C. Dulles Intl Airport