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

Spirit Airlines, Southwest, and American Airlines 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 7 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 week?

As of July 2025, 70 flights take off from San Antonio and land in Washington, D.C. each week. The most common flight departure day for this route is Mon, with 19% of weekly flights taking off on this day.

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 10 per day as of July 2025. The most frequent departure time is 11:00AM, with 88% of daily flights leaving at noon.

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 July 2025, 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.

$62 Cheap Flights from San Antonio to Washington, D.C. in 2025

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

Prices are currently low for flights on this route. Typical prices usually range from $256 to $403. The lowest price recently found on this route was $140.

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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

8:45 am - 3:55 pmSAT-DCA

6h 10m1 stop

11:30 am - 5:40 pmDCA-SAT

7h 10m1 stop

$140Southwest

Find Deal

Sat, Aug 30 - Sat, Sep 6

4:05 pm - 9:55 pmSAT-DCA

4h 50m1 stop

6:00 am - 12:10 pmDCA-SAT

7h 10m2 stops

$145Southwest

Find Deal

Sat, Aug 30 - Sat, Sep 6

2:11 pm - 5:33 amSAT-BWI

14h 22m1 stop

5:45 am - 7:23 pmBWI-SAT

14h 38m1 stop

$149Spirit Airlines

Find Deal

Wed, Aug 6 - Wed, Aug 13

2:11 pm - 5:33 amSAT-BWI

14h 22m1 stop

6:22 pm - 7:23 pmBWI-SAT

26h 01m1 stop

$158Spirit Airlines

Find Deal

Tue, Aug 5 - Tue, Aug 12

2:52 pm - 10:57 pmSAT-BWI

7h 05m1 stop

1:38 pm - 5:41 pmBWI-SAT

5h 03m1 stop

$159American Airlines

Find Deal

Tue, Aug 12 - Wed, Aug 13

11:32 am - 8:20 pmSAT-BWI

7h 48m1 stop

6:00 am - 10:09 amBWI-SAT

5h 09m1 stop

$162American Airlines

Find Deal

Mon, Aug 11 - Mon, Aug 18

7:00 am - 11:24 amSAT-IAD

3h 24mnonstop

8:32 am - 11:02 amIAD-SAT

3h 30mnonstop

$217United Airlines

Find Deal

Tue, Aug 5 - Tue, Aug 12

8:55 am - 4:43 pmSAT-IAD

6h 48m1 stop

8:25 am - 10:56 amIAD-SAT

3h 31mnonstop

$223United Airlines

Find Deal

Tue, Sep 9 - Sat, Sep 13

6:11 pm - 12:34 amSAT-IAD

5h 23m1 stop

7:22 am - 12:24 pmIAD-SAT

6h 02m1 stop

$237Delta

Find Deal

Sun, Aug 10 - Fri, Aug 15

4:26 pm - 11:18 pmSAT-BWI

5h 52m1 stop

5:35 am - 9:40 amBWI-SAT

5h 05m1 stop

$237Delta

Find Deal

Fri, Aug 1 - Mon, Aug 4

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

Aug 5

SAT7:00 amSan Antonio

3h 24m

IAD11:24 amWashington, D.C. Dulles Intl

Aug 12

IAD8:32 amWashington, D.C. Dulles Intl

3h 30m

SAT11:02 amSan Antonio

$217

Find similar

United Airlines

Sep 9

SAT8:55 amSan Antonio

6h 48m

1 stop

IAD4:43 pmWashington, D.C. Dulles Intl

Sep 13

IAD8:25 amWashington, D.C. Dulles Intl

3h 31m

SAT10:56 amSan Antonio

$223

Find similar

United Airlines

Aug 5

SAT5:56 pmSan Antonio

5h 02m

1 stop

IAD11:58 pmWashington, D.C. Dulles Intl

Aug 12

IAD5:55 pmWashington, D.C. Dulles Intl

3h 32m

SAT8:27 pmSan Antonio

$227

Find similar

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

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

Frontier

Jul 11

SAT5:38 pmSan Antonio

5h 47m

1 stop

BWI12:25 amBaltimore/Washington

Jul 14

BWI10:34 amBaltimore/Washington

7h 18m

1 stop

SAT4:52 pmSan Antonio

$205

Find similar

Frontier

Aug 29

SAT5:27 pmSan Antonio

22h 03m

1 stop

IAD4:30 pmWashington, D.C. Dulles Intl

Sep 1

IAD6:10 amWashington, D.C. Dulles Intl

11h 32m

1 stop

SAT4:42 pmSan Antonio

$226

Find similar

Frontier

Sep 19

SAT5:35 pmSan Antonio

5h 31m

1 stop

IAD12:06 amWashington, D.C. Dulles Intl

Sep 29

IAD6:10 amWashington, D.C. Dulles Intl

11h 20m

1 stop

SAT4:30 pmSan Antonio

$232

Find similar

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

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 $296. If you’re not able to fly to Washington, D.C. in June, then May is your next best option. Flight prices from San Antonio to Washington, D.C. during May average around $305.

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 $416. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Tuesday, the most expensive travel day of the week, you can expect to see flight prices from San Antonio to Washington, D.C. for around $638.

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

In the evening 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 $190. Flying to Washington, D.C. in the evening 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 $989. 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 $388 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 $280 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 July 2025, prices for San Antonio to Washington, D.C. flights are approximately 84% 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	$62
Fastest flight time	3h 12m
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 $62. The best round-trip flight deal from San Antonio to Washington, D.C. found on momondo in the last 72 hours is $140.

The fastest flight from San Antonio to Washington, D.C. takes 3h 12m

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 19m.
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 July 2025, 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 Boeing 737-900, representing 23.66% of all bookings. The subsequent popular models are Airbus A321-100/200 at 14.82%, Boeing 737-700 at 8.53%, and Boeing 737-800 Passenger/BBJ2 (winglets) at 7.70%.
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 United Airlines (48% of total bookings). The next most popular airlines are American Airlines (29%), Southwest (7%), and Delta (7%).

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 $85	Free Cancellation	Rating 5.9 3,271 reviews	Search Frontier flights
Spirit Airlines	PriceFrom $110	Free Cancellation	Rating 6.3 8,055 reviews	Search Spirit Airlines flights
Southwest	PriceFrom $204	Free Cancellation	Rating 8.0 4,249 reviews	Search Southwest flights
American Airlines	PriceFrom $208	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Delta	PriceFrom $216	Free Cancellation	Rating 8.0 7,951 reviews	Search Delta flights
United Airlines	PriceFrom $239	Free Cancellation	Rating 7.4 8,846 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 8,846 United Airlines reviews on momondo, the average score is 7.4/10. United Airlines flies from San Antonio to Washington, D.C. about 8 times each week, with ticket deals ranging from $239 to $394. Price data is based on momondo searches in the last 72 hours.

Alexandria

Gettysburg

Arlington

National Harbor

Laurel

Woodbridge

Tysons

Silver Spring

Waldorf

Fredericksburg

Manassas

Gaithersburg

Rockville

Towson

Fairfax

Colonial Beach

Glen Burnie

Linthicum Heights

Reston

Springfield

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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Find better results for your trip to the United States

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

Washington, D.C. Reagan-National Airport

Washington, D.C. Dulles Intl Airport

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Cheap flights from San Antonio to Washington, D.C. from $62

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 8/5. 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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Big names and deals

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Filter for what you want

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

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

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

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

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

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

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 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?

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.?

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 July 2025, prices for San Antonio to Washington, D.C. flights are approximately 84% more expensive when compared to flights at the same time last year.

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

Spirit Airlines, Southwest, and American Airlines are the most popular carriers operating from San Antonio to Washington, D.C.

What airlines fly to Washington, D.C.?

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 10 per day as of July 2025. The most frequent departure time is 11:00AM, with 88% of daily flights leaving at noon.

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

As of July 2025, 70 flights take off from San Antonio and land in Washington, D.C. each week. The most common flight departure day for this route is Mon, with 19% of weekly flights taking off on this day.

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.

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

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

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.?

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

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

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

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

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

Why use momondo?

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

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

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

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

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

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

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.