What is the cheapest airline that flies from San Antonio to Washington, D.C.?

Frontier, United Airlines, and Delta are the most popular carriers operating from San Antonio to Washington, D.C.

What airlines fly to Washington, D.C.?

United Airlines, Southwest and American Airlines are the top three most popular airlines that fly to Washington, D.C. from San Antonio according to our data. United Airlines is the first choice among our users, with 39% of people opting to fly with this airline when traveling to Washington, D.C.. Keep in mind that there are 8 different airlines that fly to Washington, D.C. on a routine basis, so you have a few additional options to choose from.

How many flights depart from San Antonio to Washington, D.C. on average per day?

The number of flights available between San Antonio and Washington, D.C. is 7 per day as of March 2026. The most frequent departure time is 12:00PM, with 44% of daily flights leaving in the afternoon.

Which airport is the most popular layover for flights between San Antonio and Washington, D.C.?

Detroit (DTW) was the most common stop: 43% of momondo users choosing 1-stop flights on this route connected there.

How many flights depart from San Antonio to Washington, D.C. on average per week?

As of March 2026, 53 flights take off from San Antonio and land in Washington, D.C. each week. The most common flight departure day for this route is Fri, with 21% of weekly flights taking off on this day.

Which layover airport has the shortest travel time from San Antonio to Washington, D.C.?

Flights connecting via Atlanta (ATL) have the shortest average one-way travel time: 4h 52m.

Which layover airport offers the lowest fares from San Antonio to Washington, D.C.?

Flights via Atlanta (ATL) offer the lowest average round-trip price of $268.

Which layover airport has the shortest connection time from San Antonio to Washington, D.C.?

Atlanta (ATL) has the shortest average layover time for this route: 0h 52m.

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.?

As of March 2026, there are 6 operators available to choose from 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.

$80 Cheap Flights from San Antonio to Washington, D.C. in 2026

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Find the cheapest flights from San Antonio to Washington, D.C.

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

1:22 pm - 11:59 pm

SAT

BWI

9h 37m

1 stop

9:48 pm - 9:27 am

BWI

SAT

12h 39m

1 stop

$193Multiple Airlines

Thu, Mar 26 - Sun, Apr 5

10:22 am - 10:13 am

SAT

BWI

22h 51m

1 stop

7:12 pm - 9:27 am

BWI

SAT

15h 15m

1 stop

$215Multiple Airlines

Tue, Apr 7 - Wed, Apr 8

1:22 pm - 11:59 pm

SAT

BWI

9h 37m

1 stop

5:35 pm - 5:35 pm

BWI

SAT

25h 00m

1 stop

$223Multiple Airlines

Wed, Apr 1 - Fri, Apr 17

1:22 pm - 11:59 pm

SAT

BWI

9h 37m

1 stop

5:35 pm - 5:35 pm

BWI

SAT

25h 00m

1 stop

$232Multiple Airlines

Wed, Apr 1 - Fri, Apr 17

6:00 pm - 12:44 am

SAT

BWI

5h 44m

1 stop

5:35 pm - 5:35 pm

BWI

SAT

25h 00m

1 stop

$250Frontier

Mon, Apr 13 - Fri, Apr 17

7:45 am - 9:59 pm

SAT

DCA

13h 14m

1 stop

7:00 am - 12:19 am

DCA

SAT

18h 19m

1 stop

$250Frontier

Wed, Apr 1 - Thu, Apr 2

7:15 am - 11:36 am

SAT

IAD

3h 21mnonstop

8:15 am - 11:03 am

IAD

SAT

3h 48mnonstop

$289United Airlines

Tue, Apr 7 - Fri, Apr 24

7:00 am - 11:27 am

SAT

IAD

3h 27mnonstop

3:56 pm - 11:59 pm

IAD

SAT

9h 03m

1 stop

$295United Airlines

Thu, May 28 - Sat, May 30

6:33 pm - 12:42 am

SAT

IAD

5h 09m

1 stop

11:04 am - 3:49 pm

IAD

SAT

5h 45m

1 stop

$299Delta

Fri, Apr 17 - Tue, Apr 21

6:20 am - 5:25 pm

SAT

IAD

10h 05m

2 stops

6:20 am - 3:10 pm

IAD

SAT

9h 50m

1 stop

$304Southwest

Sun, May 10 - Tue, May 12

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

Our best Southwest deals on San Antonio to Washington, D.C. flight tickets

Southwest

Apr 14

SAT2:35 pmSan Antonio

6h 40m

1 stop

DCA10:15 pmWashington, D.C. Reagan-National

Apr 21

DCA6:10 amWashington, D.C. Reagan-National

5h 15m

1 stop

SAT10:25 amSan Antonio

$284

Southwest

Apr 7

SAT3:45 pmSan Antonio

5h 10m

1 stop

DCA9:55 pmWashington, D.C. Reagan-National

Apr 14

DCA2:40 pmWashington, D.C. Reagan-National

8h 20m

2 stops

SAT10:00 pmSan Antonio

$294

Southwest

May 10

SAT6:20 amSan Antonio

10h 05m

2 stops

IAD5:25 pmWashington, D.C. Dulles Intl

May 12

IAD6:20 amWashington, D.C. Dulles Intl

9h 50m

1 stop

SAT3:10 pmSan Antonio

$304

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

Apr 7

SAT7:15 amSan Antonio

3h 21m

IAD11:36 amWashington, D.C. Dulles Intl

Apr 24

IAD8:15 amWashington, D.C. Dulles Intl

3h 48m

SAT11:03 amSan Antonio

$289

United Airlines

May 28

SAT7:00 amSan Antonio

3h 27m

IAD11:27 amWashington, D.C. Dulles Intl

May 30

IAD3:56 pmWashington, D.C. Dulles Intl

9h 03m

1 stop

SAT11:59 pmSan Antonio

$295

United Airlines

Apr 11

SAT2:14 pmSan Antonio

5h 41m

1 stop

DCA8:55 pmWashington, D.C. Reagan-National

Apr 12

DCA8:30 amWashington, D.C. Reagan-National

8h 16m

1 stop

SAT3:46 pmSan Antonio

$304

momondo Fare Finder

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 AntonioBaltimore

SAT - BWI

SATBWI

San Antonio

Thu 3/26

1:22 pm-11:59 pm

1 stop9h 37m

Baltimore/Washington

Sun 4/5

9:48 pm-9:27 am

1 stop12h 39m

$193

San AntonioBaltimore

SAT - BWI

SATBWI

San Antonio

Tue 4/7

10:22 am-10:13 am

1 stop22h 51m

Baltimore/Washington

Wed 4/8

7:12 pm-9:27 am

1 stop15h 15m

$215

San AntonioBaltimore

SAT - BWI

SATBWI

San Antonio

Wed 4/1

1:22 pm-11:59 pm

1 stop9h 37m

Baltimore/Washington

Fri 4/17

5:35 pm-5:35 pm

1 stop25h 00m

$223

San AntonioBaltimore

SAT - BWI

SATBWI

San Antonio

Wed 4/1

1:22 pm-11:59 pm

1 stop9h 37m

Baltimore/Washington

Fri 4/17

5:35 pm-5:35 pm

1 stop25h 00m

$232

San AntonioBaltimore

SAT - BWI

SATBWI

San Antonio

Mon 4/13

6:00 pm-12:44 am

1 stop5h 44m

Baltimore/Washington

Fri 4/17

5:35 pm-5:35 pm

1 stop25h 00m

$250

San AntonioWashington, D.C.

SAT - DCA

SATDCA

San Antonio

Wed 4/1

7:45 am-9:59 pm

1 stop13h 14m

Washington, D.C. Reagan-National

Thu 4/2

7:00 am-12:19 am

1 stop18h 19m

$250

Quickest round-trip

San AntonioWashington, D.C.

SAT - IAD

SATIAD

San Antonio

Tue 4/7

7:15 am-11:36 am

Nonstop3h 21m

Washington, D.C. Dulles Intl

Fri 4/24

8:15 am-11:03 am

Nonstop3h 48m

$289

San AntonioWashington, D.C.

SAT - IAD

SATIAD

San Antonio

Thu 5/28

7:00 am-11:27 am

Nonstop3h 27m

Washington, D.C. Dulles Intl

Sat 5/30

3:56 pm-11:59 pm

1 stop9h 03m

$295

San AntonioWashington, D.C.

SAT - IAD

SATIAD

San Antonio

Fri 4/17

6:33 pm-12:42 am

1 stop5h 09m

Washington, D.C. Dulles Intl

Tue 4/21

11:04 am-3:49 pm

1 stop5h 45m

$299

San AntonioWashington, D.C.

SAT - IAD

SATIAD

San Antonio

Sun 5/10

6:20 am-5:25 pm

2 stops10h 05m

Washington, D.C. Dulles Intl

Tue 5/12

6:20 am-3:10 pm

1 stop9h 50m

$304

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Layovers

Other information

What is the typical price of a round-trip flight between San Antonio and Washington, D.C.?

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 $252. 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 $269.

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 $397. 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 $602.

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

In the morning 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 $450. Flying to Washington, D.C. in the morning 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 $814. 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 Baltimore/Washington 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 $355 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 March 2026, prices for San Antonio to Washington, D.C. flights are approximately 1% cheaper 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	$191
Fastest flight time	3h 05m
Direct flights	Every day
Airports in Washington, D.C.	2 airports

The best one-way flight to Washington, D.C. from San Antonio in the past 72 hours is $191. The best round-trip flight deal from San Antonio to Washington, D.C. found on momondo in the last 72 hours is $329.

The fastest flight from San Antonio to Washington, D.C. takes 3h 05m

Direct flights go from San Antonio to Washington, D.C. every day.

There are 2 airports in Washington, D.C.. From San Antonio there are direct flights to 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 05m.
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.?
As of March 2026, there are 6 operators available to choose from 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.?
momondo data reveals that the most frequently booked plane model on the route from San Antonio to Washington, D.C. is Airbus A319, representing 17.19% of all bookings. The subsequent popular models are Boeing 737-700 at 16.17%, Boeing 737 MAX 9 at 16.07%, and Boeing 737 MAX 8 at 12.92%.
What is the most popular airline from San Antonio to Washington, D.C.?
Based on momondo bookings for this flight route, the most popular airline on flight routes from San Antonio to Washington, D.C. is American Airlines (40% of total bookings). The next most popular airlines are United Airlines (37%), Southwest (11%), and Delta (6%).

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
Frontier	PriceFrom $72	Free Cancellation	Rating 5.7 3,030 reviews	Search Frontier flights
Spirit Airlines	PriceFrom $92	Free Cancellation	Rating 6.3 8,519 reviews	Search Spirit Airlines flights
Delta	PriceFrom $153	Free Cancellation	Rating 7.9 8,292 reviews	Search Delta flights
American Airlines	PriceFrom $185	Free Cancellation	Rating 7.1 11,466 reviews	Search American Airlines flights
Southwest	PriceFrom $204	Free Cancellation	Rating 8.0 4,318 reviews	Search Southwest flights
United Airlines	PriceFrom $226	Free Cancellation	Rating 7.4 9,428 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 4 flights on this route every week with an average price of $357. Southwest is rated 8.0/10 by our users.
United Airlines Flights From San Antonio to Washington, D.C.
Across 9,428 United Airlines reviews on momondo, the average score is 7.4/10. United Airlines flies from San Antonio to Washington, D.C. about 11 times each week, with ticket deals ranging from $226 to $376. Price data is based on momondo searches in the last 72 hours.

Alexandria

National Harbor

Gettysburg

Arlington

Waldorf

Woodbridge

Colonial Beach

Laurel

Towson

Gaithersburg

Silver Spring

Fredericksburg

Rockville

Tysons

Manassas

Springfield

Bethesda

Fairfax

Linthicum Heights

College Park

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.

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

Washington, D.C. Reagan-National Airport

Washington, D.C. Dulles Intl Airport

Cheap flights from San Antonio to Washington, D.C. from $80

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 3/27. 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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Southwest flights from San Antonio to Washington, D.C.

Our best Southwest deals on San Antonio to Washington, D.C. flight tickets

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

Our best United Airlines deals on San Antonio to Washington, D.C. flight tickets

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

See travel insights to Washington, D.C. from

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

What is the typical price of a round-trip flight between San Antonio and Washington, D.C.?

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

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

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

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

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

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

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

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

What is the cheapest airline that flies from San Antonio to Washington, D.C.?

What airlines fly to Washington, D.C.?

Which airport is the most popular layover for flights between San Antonio and Washington, D.C.?

Which layover airport offers the lowest fares from San Antonio to Washington, D.C.?

Which layover airport has the shortest travel time from San Antonio to Washington, D.C.?

Which layover airport has the shortest connection time from San Antonio to Washington, D.C.?

How many flights depart from San Antonio to Washington, D.C. on average per day?

How many flights depart from San Antonio to Washington, D.C. on average per week?

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

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

Fastest flight time

Direct flights

Airports in 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

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

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

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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.

Fly your favorite airline to Washington, D.C.

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Washington, D.C.

List of cabin classes available on flights landing in Washington, D.C.. Availability may vary depending on flight origin and airline.

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