How popular is this San Antonio to Washington, D.C. flight route?

Within the past month, 14 users have taken a look at flights from San Antonio to Washington, D.C..

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

Delta, at $197, was found to be the cheapest airline from San Antonio to Washington, D.C.. An alternate airline flying to your destination would be Southwest. You may be able to fly from San Antonio to Washington, D.C. for 40% 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 $65 on Spirit Airlines. Other airlines that offer cheap prices include United Airlines from $95 and American Airlines from $96 one-way.

In terms of precipitation, rainfall in Washington, D.C. ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. when rainfall is around 2.6 in.

If weather is an important factor for your trip to Washington, D.C., use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

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 - Baltimore/Washington or San Antonio - Washington, D.C. Reagan-National as they are the most popular.

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 $278, our data shows the cheapest flight currently is $112. When looking at the most popular route, (San Antonio - Washington, D.C. Dulles Intl), you can expect to pay $191 for that flight.

What are the most popular airlines that fly from San Antonio to Washington, D.C.?

The most popular airlines flying from San Antonio to Washington, D.C. are American Airlines, Delta and Frontier. Something to consider prior to booking your flight.

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

Wednesday is generally a great day to depart. Flying on this day could help you save up to 57%.

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

To save up to 105% on this flight, we recommend booking at least 36 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from San Antonio to Washington, D.C. from $303 1-2 weeks out and tickets from $488 for flights departing within the next 72 hours.

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

Our data shows that June tends to be the cheapest month to fly to Washington, D.C. from San Antonio. Users have commonly found prices around $329 for the month, but tickets can be as low as $110. Due to multiple factors, prepare for potentially higher prices in November.

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 8 daily outbound flights to Washington, D.C. from 6 different airlines.

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.

$65+ Flights from San Antonio to Washington, D.C.

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

Airfare is below average for this route at the moment. San Antonio to Washington, D.C. flights typically cost between $248 and $435 in September. The cheapest round-trip price found within the last 3 days was $169 on Multiple Airlines (Sep 11-Sep 13).

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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

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Cheapflights Tip: The best prices from San Antonio to Washington, D.C. are usually found in June or September, booked 35 days in advance, depart on a Thursday or Friday and return on a Tuesday

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

Round-trip from	$169 (Justfly.com)
One-way from	$65 (Cheapflightsfares)
Popular in	November
Cheapest in	June
Average price	$339
Good round-trip deal	$236 or less
Good one-way deal	$149 or less

From San Antonio to Washington, D.C. (WAS)

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One-way flight from San Antonio to Washington, D.C. (WAS)

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Highest demand for flights based on searches. 10% potential increase in price ($40 potential increase over avg. RT price).

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Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).

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Average for round-trip flights in August 2025

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Price to beat on a round-trip flight from San Antonio to Washington, D.C. (WAS).

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Price to beat on a one-way flight from San Antonio to Washington, D.C. (WAS).

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Find 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 August 13, 2025.

Thu 9/1111:33 amSAT - BWI

1 stop6h 37mMultiple Airlines

Sat 9/135:45 amBWI - SAT

1 stop14h 47mMultiple Airlines

Deal found 8/11

$169

Wed 9/38:28 pmSAT - BWI

1 stop9h 26mMultiple Airlines

Thu 9/189:37 pmBWI - SAT

1 stop15h 03mMultiple Airlines

Deal found 8/12

$195

Sun 9/76:40 amSAT - BWI

1 stop4h 50mDelta

Fri 9/127:35 pmBWI - SAT

1 stop5h 24mDelta

Deal found 8/11

$197

Sat 10/48:37 pmSAT - BWI

1 stop9h 24mSpirit Airlines

Tue 10/78:16 amBWI - SAT

1 stop13h 36mSpirit Airlines

Deal found 8/12

$201

Fri 10/247:10 pmSAT - BWI

1 stop21h 27mFrontier

Mon 10/2711:31 amBWI - SAT

1 stop7h 44mFrontier

Deal found 8/12

$204

Thu 9/118:37 pmSAT - BWI

2 stops14h 49mSpirit Airlines

Sat 9/135:45 amBWI - SAT

1 stop14h 47mSpirit Airlines

Deal found 8/11

$205

Thu 8/2812:39 pmSAT - BWI

1 stop8h 30mSpirit Airlines

Wed 9/35:45 amBWI - SAT

1 stop14h 38mSpirit Airlines

Deal found 8/11

$208

Sun 9/75:27 pmSAT - BWI

1 stop6h 14mAmerican Airlines

Fri 9/122:46 pmBWI - SAT

1 stop7h 38mAmerican Airlines

Deal found 8/10

$211

Fri 9/512:45 pmSAT - IAD

1 stop28h 39mMultiple Airlines

Sun 9/77:14 pmIAD - SAT

1 stop17h 26mMultiple Airlines

Deal found 8/12

$216

Sat 10/411:45 amSAT - BWI

2 stops8h 37mUnited Airlines

Tue 10/76:29 amBWI - SAT

1 stop6h 29mUnited Airlines

Deal found 8/12

$216

Wed 10/86:15 amSAT - DCA

2 stops6h 45mSouthwest

Tue 10/146:00 amDCA - SAT

1 stop7h 00mSouthwest

Deal found 8/11

$216

Sun 8/316:30 amSAT - DCA

Nonstop3h 22mAmerican Airlines

Sun 9/287:59 pmDCA - SAT

Nonstop3h 37mAmerican Airlines

Deal found 8/11

$219

Best flights from San Antonio to Washington, D.C.
Discover carefully curated flight deals from San Antonio to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 13, 2025.

Thu 9/1111:33 amSAT - BWI

1 stop6h 37mMultiple Airlines

Sat 9/135:45 amBWI - SAT

1 stop14h 47mMultiple Airlines

Deal found 8/11

$169

Wed 10/222:31 pmSAT - BWI

1 stop8h 18mDelta

Sat 10/259:00 amBWI - SAT

1 stop5h 28mDelta

Deal found 8/11

$197

Sat 10/48:37 pmSAT - BWI

1 stop9h 24mSpirit Airlines

Tue 10/78:16 amBWI - SAT

1 stop13h 36mSpirit Airlines

Deal found 8/12

$201

Fri 10/247:10 pmSAT - BWI

1 stop21h 27mFrontier

Mon 10/2711:31 amBWI - SAT

1 stop7h 44mFrontier

Deal found 8/12

$204

Thu 9/255:27 pmSAT - BWI

1 stop6h 14mAmerican Airlines

Mon 9/296:14 amBWI - SAT

1 stop5h 07mAmerican Airlines

Deal found 8/10

$211

Wed 10/86:15 amSAT - DCA

2 stops6h 45mSouthwest

Tue 10/146:00 amDCA - SAT

1 stop7h 00mSouthwest

Deal found 8/11

$216

Wed 9/1012:00 pmSAT - IAD

Nonstop3h 20mUnited Airlines

Wed 9/175:55 pmIAD - SAT

Nonstop3h 38mUnited Airlines

Deal found 8/12

$231

Wed 9/38:28 pmSAT - BWI

1 stop9h 26mMultiple Airlines

Thu 9/189:37 pmBWI - SAT

1 stop15h 03mMultiple Airlines

Deal found 8/12

$195

Sun 9/76:40 amSAT - BWI

1 stop4h 50mDelta

Fri 9/127:35 pmBWI - SAT

1 stop5h 24mDelta

Deal found 8/11

$197

Fri 11/76:00 amSAT - BWI

1 stop12h 30mSpirit Airlines

Tue 11/118:26 pmBWI - SAT

1 stop18h 41mSpirit Airlines

Deal found 8/12

$201

Thu 9/255:29 amSAT - BWI

1 stop4h 43mDelta

Mon 9/296:25 pmBWI - SAT

1 stop6h 34mDelta

Deal found 8/11

$197

Sun 8/316:30 amSAT - DCA

Nonstop3h 22mAmerican Airlines

Sun 9/287:59 pmDCA - SAT

Nonstop3h 37mAmerican Airlines

Deal found 8/11

$219

Last-minute flights from San Antonio to Washington, D.C.
Discover last-minute flight deals from San Antonio to Washington, D.C.. Data last updated August 13, 2025 and is based on user searches.

Mon 8/185:38 pmSAT - BWI

1 stop5h 47mFrontier

Mon 8/256:10 amBWI - SAT

1 stop11h 32mFrontier

Deal found 8/11

$241

Mon 8/185:38 pmSAT - IAD

1 stop5h 41mFrontier

Mon 8/256:10 amIAD - SAT

1 stop11h 32mFrontier

Deal found 8/11

$268

Mon 8/185:38 pmSAT - BWI

1 stop5h 47mMultiple Airlines

Wed 8/205:45 amBWI - SAT

1 stop14h 38mMultiple Airlines

Deal found 8/10

$279

Wed 8/208:28 pmSAT - BWI

2 stops15h 08mSpirit Airlines

Fri 8/226:30 amBWI - SAT

1 stop8h 23mSpirit Airlines

Deal found 8/11

$266

Thu 8/2112:39 pmSAT - BWI

1 stop8h 30mSpirit Airlines

Sun 8/246:37 amBWI - SAT

1 stop11h 11mSpirit Airlines

Deal found 8/10

$242

Thu 8/2112:39 pmSAT - BWI

1 stop8h 30mSpirit Airlines

Mon 8/255:45 amBWI - SAT

1 stop14h 38mSpirit Airlines

Deal found 8/10

$268

Thu 8/218:18 pmSAT - BWI

1 stop20h 23mFrontier

Mon 8/256:10 amBWI - SAT

1 stop11h 32mFrontier

Deal found 8/10

$269

Thu 8/218:18 pmSAT - BWI

1 stop20h 23mFrontier

Sun 8/245:24 pmBWI - SAT

1 stop24h 18mFrontier

Deal found 8/9

$301

Thu 8/218:18 pmSAT - DCA

1 stop19h 41mFrontier

Sun 8/246:00 pmDCA - SAT

1 stop26h 33mFrontier

Deal found 8/12

$321

Thu 8/217:00 amSAT - IAD

Nonstop3h 19mUnited Airlines

Mon 8/255:55 pmIAD - SAT

Nonstop3h 38mUnited Airlines

Deal found 8/10

$334

Fri 8/225:27 pmSAT - BWI

1 stop21h 31mMultiple Airlines

Sun 8/246:37 amBWI - SAT

1 stop11h 11mMultiple Airlines

Deal found 8/9

$233

Fri 8/225:27 pmSAT - IAD

1 stop22h 03mFrontier

Sun 8/245:18 pmIAD - SAT

1 stop24h 24mFrontier

Deal found 8/10

$262

One-way flights from San Antonio to Washington, D.C.
Search for one-way flight options from San Antonio to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated August 13, 2025.

Sat 9/68:37 pmSAT - BWI

1 stop9h 24mSpirit Airlines

Deal found 8/11

$65

Wed 9/38:28 pmSAT - BWI

1 stop9h 26mSpirit Airlines

Deal found 8/12

$66

Sat 9/208:37 pmSAT - BWI

1 stop9h 24mSpirit Airlines

Deal found 8/12

$71

Sat 9/138:37 pmSAT - BWI

1 stop9h 24mSpirit Airlines

Deal found 8/12

$73

Sat 9/278:37 pmSAT - BWI

1 stop9h 24mSpirit Airlines

Deal found 8/12

$84

Sat 10/48:37 pmSAT - BWI

1 stop9h 24mSpirit Airlines

Deal found 8/12

$84

Fri 10/3112:12 pmSAT - IAD

Nonstop3h 11mUnited Airlines

Deal found 8/12

$95

Thu 11/277:07 amSAT - IAD

Nonstop3h 12mUnited Airlines

Deal found 8/11

$95

Wed 12/37:00 amSAT - IAD

Nonstop3h 11mUnited Airlines

Deal found 8/11

$96

Thu 12/412:08 pmSAT - IAD

Nonstop3h 11mUnited Airlines

Deal found 8/11

$96

Wed 12/107:00 amSAT - IAD

Nonstop3h 11mUnited Airlines

Deal found 8/11

$96

Sat 12/67:00 amSAT - IAD

Nonstop3h 11mUnited Airlines

Deal found 8/11

$96

Cheapflights 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

San AntonioBaltimore

SAT - BWI

SATBWI

San Antonio

Thu 9/11

11:33 am-7:10 pm

1 stop6h 37m

Baltimore/Washington

Sat 9/13

5:45 am-7:32 pm

1 stop14h 47m

$169

San AntonioBaltimore

SAT - BWI

SATBWI

San Antonio

Wed 9/3

8:28 pm-6:54 am

1 stop9h 26m

Baltimore/Washington

Thu 9/18

9:37 pm-11:40 am

1 stop15h 03m

$195

San AntonioBaltimore

SAT - BWI

SATBWI

San Antonio

Wed 10/22

2:31 pm-11:49 pm

1 stop8h 18m

Baltimore/Washington

Sat 10/25

9:00 am-1:28 pm

1 stop5h 28m

$197

San AntonioBaltimore

SAT - BWI

SATBWI

San Antonio

Sun 9/7

6:40 am-12:30 pm

1 stop4h 50m

Baltimore/Washington

Fri 9/12

7:35 pm-11:59 pm

1 stop5h 24m

$197

San AntonioBaltimore

SAT - BWI

SATBWI

San Antonio

Thu 9/25

5:29 am-11:12 am

1 stop4h 43m

Baltimore/Washington

Mon 9/29

6:25 pm-11:59 pm

1 stop6h 34m

$197

San AntonioBaltimore

SAT - BWI

SATBWI

San Antonio

Mon 9/8

4:36 pm-11:17 pm

1 stop5h 41m

Baltimore/Washington

Mon 9/15

7:25 pm-11:59 pm

1 stop5h 34m

$197

San AntonioBaltimore

SAT - BWI

SATBWI

San Antonio

Sat 10/4

8:37 pm-7:01 am

1 stop9h 24m

Baltimore/Washington

Tue 10/7

8:16 am-8:52 pm

1 stop13h 36m

$201

San AntonioBaltimore

SAT - BWI

SATBWI

San Antonio

Fri 11/7

6:00 am-7:30 pm

1 stop12h 30m

Baltimore/Washington

Tue 11/11

8:26 pm-2:07 pm

1 stop18h 41m

$201

San AntonioBaltimore

SAT - BWI

SATBWI

San Antonio

Fri 10/24

7:10 pm-5:37 pm

1 stop21h 27m

Baltimore/Washington

Mon 10/27

11:31 am-6:15 pm

1 stop7h 44m

$204

San AntonioBaltimore

SAT - BWI

SATBWI

San Antonio

Thu 9/11

8:37 pm-12:26 pm

2 stops14h 49m

Baltimore/Washington

Sat 9/13

5:45 am-7:32 pm

1 stop14h 47m

$205

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/11

Showing 1-10 of 58 results

...

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

Cheapflights partnered with top experts to bring you the best recommendations for your San Antonio to Washington, D.C. trip

Airports

SAT

For a quick departure, SAT offers a central ticketing area leading to Terminals A and B. Enjoy local dining like Smoke Shack's brisket before your flight.

IAD

Use the Silver Line Metro for a cost-effective trip to D.C. from IAD. It's a 40-minute ride with a station five minutes from the terminal.

Our travel experts

Ramsey Qubein

Expert on SAT and IAD

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.?

Booking 35 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, August is the cheapest month in which you can book a flight from San Antonio to Washington, D.C. (average of $241). Flying from San Antonio to Washington, D.C. in March is currently the most expensive (average of $290). 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?

Unlike in the afternoon, when flights are generally more expensive, you can save up to 71% on flights from San Antonio to Washington, D.C. by exploring options for tickets at noon.

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

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

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

The most flights from SAT to WAS are scheduled on a Monday (10 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (5 on average).

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

Reviews of airlines servicing Washington, D.C.

Peruse reviews from past customers who have flown with Southwest, Delta, and United 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

4,246 reviews

Reviews

1 / 20

8.0

Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Southwest

8.0

Very good

4,246 reviews

Southwest

8.0

Very good

4,246 reviews

Reviews

1 / 20

8.0

Excellent

Walter,Aug 2025

OAK - SAN

Delta

8.0

Very good

7,979 reviews

Southwest

8.0

Very good

4,246 reviews

Reviews

1 / 20

8.0

Excellent

Walter,Aug 2025

OAK - SAN

United Airlines

7.4

Good

8,920 reviews

Southwest

8.0

Very good

4,246 reviews

Reviews

1 / 20

8.0

Excellent

Walter,Aug 2025

OAK - SAN

American Airlines

7.2

Good

10,000 reviews

Southwest

8.0

Very good

4,246 reviews

Reviews

1 / 20

8.0

Excellent

Walter,Aug 2025

OAK - SAN

Spirit Airlines

6.3

Okay

8,048 reviews

Southwest

8.0

Very good

4,246 reviews

Reviews

1 / 20

8.0

Excellent

Walter,Aug 2025

OAK - SAN

Related info for your journey

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 8 daily outbound flights to Washington, D.C. from 6 different airlines.
How popular is this San Antonio to Washington, D.C. flight route?
Within the past month, 14 users have taken a look at flights from San Antonio to Washington, D.C..
What are the cheapest airlines flying from San Antonio to Washington, D.C. round-trip?
Delta, at $197, was found to be the cheapest airline from San Antonio to Washington, D.C.. An alternate airline flying to your destination would be Southwest. You may be able to fly from San Antonio to Washington, D.C. for 40% 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 $65 on Spirit Airlines. Other airlines that offer cheap prices include United Airlines from $95 and American Airlines from $96 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 - Baltimore/Washington or San Antonio - Washington, D.C. Reagan-National as they are the most popular.
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 $278, our data shows the cheapest flight currently is $112. When looking at the most popular route, (San Antonio - Washington, D.C. Dulles Intl), you can expect to pay $191 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, August is the cheapest month in which you can book a flight from San Antonio to Washington, D.C. (average of $241). Flying from San Antonio to Washington, D.C. in March is currently the most expensive (average of $290). 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

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Browse thousands of different options on Cheapflights for your next trip

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

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$85	Average$169	FlexibilityNo cancel fee	On-time62%
Spirit Airlines	Cheapest$107	Average$224	FlexibilityNo cancel fee	On-time65%
American Airlines	Cheapest$197	Average$347	FlexibilityNo cancel fee	On-time71%
Southwest	Cheapest$204	Average$425	FlexibilityNo cancel fee	On-time63%
Delta	Cheapest$216	Average$358	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$239	Average$394	FlexibilityNo cancel fee	On-time69%

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$65+ 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 9/6. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from San Antonio to Washington, D.C. with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from San Antonio to Washington, D.C. are usually found in June or September, booked 35 days in advance, depart on a Thursday or Friday and return on a Tuesday

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

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find 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 August 13, 2025.

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 August 13, 2025.

Cheapflights Fare Finder

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

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

Cheapflights partnered with top experts to bring you the best recommendations for your San Antonio to Washington, D.C. trip

Airports

SAT

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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.

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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 August 8, 2025.

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

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 August 13, 2025.

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

Use this chart to determine the cheapest time to fly round-trip from San Antonio to Washington, D.C.. Price data was last updated on August 10, 2025.

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

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

Reviews of airlines servicing Washington, D.C.

Peruse reviews from past customers who have flown with Southwest, Delta, and United 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.

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.?

How popular is this San Antonio to Washington, D.C. flight route?

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

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

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

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

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

How can I 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.?

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

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

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Alternative routes for San Antonio to Washington, D.C.

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

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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 August 13, 2025.