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

Southwest and United Airlines are the most popular carriers operating from Washington, D.C. Reagan-National to San Antonio

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

Flights connecting via Dallas (DFW) have the shortest average one-way travel time: 5h 57m.

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

Dallas (DFW) has the shortest average layover time for this route: 0h 57m.

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

Dallas (DFW) was the most common stop: 50% of momondo users choosing 1-stop flights on this route connected there.

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

Flights via Denver (DEN) offer the lowest average round-trip price of $280.

What airlines fly to San Antonio?

American Airlines, Southwest and United Airlines are the top three most popular airlines that fly to San Antonio from Washington, D.C. Reagan-National Airport according to our data. American Airlines is the first choice among our users, with 39% of people opting to fly with this airline when traveling to San Antonio. Keep in mind that there are 5 different airlines that fly to San Antonio on a routine basis, so you have a few additional options to choose from.

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

As of June 2026, there are 5 operators available to choose from for flights from Washington, D.C. Reagan-National Airport to San Antonio Airport.

What documentation or ID do you need to fly to San Antonio Airport?

The travel and health documents required for your trip to San Antonio Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at San Antonio Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$105 Cheap Flights from Washington, D.C. Reagan-National Airport to San Antonio in 2026

Q: How many flights depart from Washington, D.C. Reagan-National Airport to San Antonio on average per week?

As of June 2026, there are 19 flights per week flying from Washington, D.C. Reagan-National Airport to San Antonio. The most common day of the week flights depart is Tue, with 21% of flights taking off on this day.

Q: How many flights depart from Washington, D.C. Reagan-National Airport to San Antonio on average per day?

The number of flights available between Washington, D.C. Reagan-National Airport and San Antonio is 2 per day as of June 2026. The most frequent departure time is 6:00PM, with 39% of daily flights leaving at noon.

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Washington, D.C. Reagan-National Airport to San Antonio

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:00 am - 6:44 pm

DCA

SAT

12h 44m

1 stop

7:39 pm - 12:51 pm

SAT

DCA

16h 12m

1 stop

$312Frontier

jue., jul. 9 - dom., jul. 12

1:59 pm - 6:44 pm

DCA

SAT

29h 45m

1 stop

7:39 pm - 12:51 pm

SAT

DCA

16h 12m

1 stop

$313Frontier

vie., jul. 10 - mié., jul. 15

6:15 am - 10:25 am

DCA

SAT

5h 10m

1 stop

3:35 pm - 10:55 pm

SAT

DCA

6h 20m

1 stop

$314Southwest

vie., jul. 10 - mié., jul. 15

2:40 pm - 10:10 pm

DCA

SAT

8h 30m

1 stop

5:40 pm - 11:20 pm

SAT

DCA

4h 40m

1 stop

$317Southwest

sáb., ago. 1 - jue., ago. 6

4:59 pm - 7:40 pm

DCA

SAT

3h 41mnonstop

9:00 am - 1:22 pm

SAT

DCA

3h 22mnonstop

$318American Airlines

mar., jul. 21 - mar., jul. 28

5:00 am - 9:02 am

DCA

SAT

5h 02m

1 stop

6:35 am - 10:56 am

SAT

DCA

3h 21mnonstop

$319American Airlines

vie., jul. 24 - sáb., ago. 1

6:15 am - 10:25 am

DCA

SAT

5h 10m

1 stop

5:45 am - 3:00 pm

SAT

DCA

8h 15m

2 stops

$320Southwest

vie., jul. 10 - mié., jul. 15

6:50 am - 11:10 am

DCA

SAT

5h 20m

1 stop

4:20 pm - 11:55 pm

SAT

DCA

6h 35m

2 stops

$323Southwest

lun., ago. 10 - mié., ago. 12

6:30 pm - 12:20 am

DCA

SAT

6h 50m

1 stop

12:24 pm - 6:37 pm

SAT

DCA

5h 13m

1 stop

$324Delta

mar., jul. 28 - sáb., ago. 1

5:00 am - 9:02 am

DCA

SAT

5h 02m

1 stop

9:00 am - 1:22 pm

SAT

DCA

3h 22mnonstop

$326American Airlines

sáb., jul. 25 - mar., jul. 28

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Southwest flights from Washington, D.C. Reagan-National Airport to San Antonio

Our best Southwest deals on Washington, D.C. Reagan-National Airport to San Antonio flight tickets

Southwest

Jul 10

DCA6:15 amWashington, D.C. Reagan-National

5h 10m

1 stop

SAT10:25 amSan Antonio

Jul 15

SAT3:35 pmSan Antonio

6h 20m

1 stop

DCA10:55 pmWashington, D.C. Reagan-National

$314

Southwest

Aug 1

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

8h 30m

1 stop

SAT10:10 pmSan Antonio

Aug 6

SAT5:40 pmSan Antonio

4h 40m

1 stop

DCA11:20 pmWashington, D.C. Reagan-National

$317

Southwest

Jul 10

DCA6:15 amWashington, D.C. Reagan-National

5h 10m

1 stop

SAT10:25 amSan Antonio

Jul 15

SAT5:45 amSan Antonio

8h 15m

2 stops

DCA3:00 pmWashington, D.C. Reagan-National

$320

Delta flights from Washington, D.C. Reagan-National Airport to San Antonio

Our best Delta deals on Washington, D.C. Reagan-National Airport to San Antonio flight tickets

Delta

Jul 28

DCA6:30 pmWashington, D.C. Reagan-National

6h 50m

1 stop

SAT12:20 amSan Antonio

Aug 1

SAT12:24 pmSan Antonio

5h 13m

1 stop

DCA6:37 pmWashington, D.C. Reagan-National

$324

Delta

Jul 24

DCA7:37 pmWashington, D.C. Reagan-National

5h 43m

1 stop

SAT12:20 amSan Antonio

Aug 3

SAT12:37 pmSan Antonio

9h 22m

1 stop

DCA10:59 pmWashington, D.C. Reagan-National

$339

Delta

Jun 22

DCA1:42 pmWashington, D.C. Reagan-National

7h 59m

1 stop

SAT8:41 pmSan Antonio

Jun 30

SAT5:15 amSan Antonio

5h 19m

1 stop

DCA11:34 amWashington, D.C. Reagan-National

$354

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

jue. 7/9

7:00 am-6:44 pm

1 stop12h 44m

San Antonio

dom. 7/12

7:39 pm-12:51 pm

1 stop16h 12m

$312

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

vie. 7/10

1:59 pm-6:44 pm

1 stop29h 45m

San Antonio

mié. 7/15

7:39 pm-12:51 pm

1 stop16h 12m

$313

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

vie. 7/10

6:15 am-10:25 am

1 stop5h 10m

San Antonio

mié. 7/15

3:35 pm-10:55 pm

1 stop6h 20m

$314

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

sáb. 8/1

2:40 pm-10:10 pm

1 stop8h 30m

San Antonio

jue. 8/6

5:40 pm-11:20 pm

1 stop4h 40m

$317

Quickest round-trip

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

mar. 7/21

4:59 pm-7:40 pm

Nonstop3h 41m

San Antonio

mar. 7/28

9:00 am-1:22 pm

Nonstop3h 22m

$318

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

vie. 7/24

5:00 am-9:02 am

1 stop5h 02m

San Antonio

sáb. 8/1

6:35 am-10:56 am

Nonstop3h 21m

$319

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

vie. 7/10

6:15 am-10:25 am

1 stop5h 10m

San Antonio

mié. 7/15

5:45 am-3:00 pm

2 stops8h 15m

$320

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

lun. 8/10

6:50 am-11:10 am

1 stop5h 20m

San Antonio

mié. 8/12

4:20 pm-11:55 pm

2 stops6h 35m

$323

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

mar. 7/28

6:30 pm-12:20 am

1 stop6h 50m

San Antonio

sáb. 8/1

12:24 pm-6:37 pm

1 stop5h 13m

$324

Washington, D.C.San Antonio

DCA - SAT

DCASAT

Washington, D.C. Reagan-National

sáb. 7/25

5:00 am-9:02 am

1 stop5h 02m

San Antonio

mar. 7/28

9:00 am-1:22 pm

Nonstop3h 22m

$326

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 Washington, D.C. Reagan-National Airport to San Antonio

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 Washington, D.C. Reagan-National Airport and San Antonio?

What is the cheapest month to fly to San Antonio?

If you aren’t able to travel during the month of September, then book flights to San Antonio from Washington, D.C. Reagan-National Airport during January instead. Flights to San Antonio in January, while not as cheap as those in September, still average around $317.

What is the cheapest day to depart on your flight to San Antonio?

The cheapest day to depart on your flight to San Antonio is on a Thursday when prices can be found for as low as $342. This is often the case because there is less demand to fly during this day of the week. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to San Antonio on Sunday is $507.

What is the cheapest time of day to depart on your flight to San Antonio?

According to our data, the cheapest time of day to fly to San Antonio is at noon. momondo users have found flights departing from Washington, D.C. Reagan-National Airport to San Antonio at noon for as low as $309. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to San Antonio are more costly in the morning, with an average ticket price of $398. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

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

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

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

You are more likely to see cheaper flights to San Antonio from Washington, D.C. Reagan-National Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to San Antonio for around $362 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Antonio from Washington, D.C. Reagan-National Airport for as low as $269 on momondo.

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

There are 3 cabin classes available to choose from on Washington, D.C. Reagan-National Airport to San Antonio flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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

As of June 2026, prices for Washington, D.C. Reagan-National Airport to San Antonio flights are approximately 19% more expensive when compared to flights at the same time last year.

When to book flights from Washington, D.C. Reagan-National Airport to San Antonio

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

Estimated round-trip price

Cheap Washington, D.C. Reagan-National Airport to San Antonio (DCA to SAT) flight deals and tips

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

Best Price Found	$275
Fastest flight time	3h 41m
Direct flights	Every day
Airports in San Antonio	1 airport

The best one-way flight to San Antonio from Washington, D.C. Reagan-National Airport in the past 72 hours is $275. The best round-trip flight deal from Washington, D.C. Reagan-National Airport to San Antonio found on momondo in the last 72 hours is $309.

The fastest flight from Washington, D.C. Reagan-National Airport to San Antonio takes 3h 41m

Direct flights go from Washington, D.C. Reagan-National Airport to San Antonio every day.

There is 1 airport in San Antonio. From Washington, D.C. Reagan-National Airport there are direct flights to San Antonio (SAT).

Search flight deals

Frequently asked questions about flying from Washington, D.C. Reagan-National Airport to San Antonio

How far is Washington, D.C. Reagan-National to San Antonio by plane?
Washington, D.C. Reagan-National and San Antonio are 1383.3 mi apart from one another. A reasonable flight in good conditions will take 3h 41m.
When did momondo last update prices for flights from Washington, D.C. Reagan-National Airport to San Antonio Airport?
Prices for flights from Washington, D.C. Reagan-National Airport to San Antonio Airport were last updated today.
How many operators does momondo search for flights from Washington, D.C. Reagan-National Airport to San Antonio Airport?
As of June 2026, there are 5 operators available to choose from for flights from Washington, D.C. Reagan-National Airport to San Antonio Airport.
How old do you have to be to fly from Washington, D.C. Reagan-National Airport to San Antonio Airport?
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 Washington, D.C. Reagan-National Airport to San Antonio Airport.
What documentation or ID do you need to fly to San Antonio Airport?
The travel and health documents required for your trip to San Antonio Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at San Antonio Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Washington, D.C. Reagan-National Airport to San Antonio?
momondo data reveals that the most frequently booked plane model on the route from Washington, D.C. Reagan-National Airport to San Antonio is Airbus A319, representing 27.61% of all bookings. The subsequent popular models are Boeing 737 MAX 8 at 20.65%, Boeing 737-700 at 16.24%, and Boeing 737 MAX 9 at 9.51%.
What is the most popular airline from Washington, D.C. Reagan-National Airport to San Antonio?
Based on momondo bookings for flights between Washington, D.C. Reagan-National Airport and San Antonio, the leading airline is American Airlines, making up 56% of the total bookings. Other popular airlines include United Airlines with 18%, Southwest with 15%, and Delta with 9%.

Best airlines flying from Washington, D.C. Reagan-National Airport to San Antonio

Compare and see reviews for airlines that fly from Washington, D.C. Reagan-National Airport to San Antonio with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $160	Free Cancellation	Rating 5.6 2,898 reviews	Search Frontier flights
Southwest	PriceFrom $208	Free Cancellation	Rating 7.9 4,235 reviews	Search Southwest flights
American Airlines	PriceFrom $244	Free Cancellation	Rating 7.1 11,635 reviews	Search American Airlines flights
Delta	PriceFrom $250	Free Cancellation	Rating 7.9 8,395 reviews	Search Delta flights
United Airlines	PriceFrom $267	Free Cancellation	Rating 7.4 9,804 reviews	Search United Airlines flights

Southwest Flights From Washington, D.C. Reagan-National Airport to San Antonio
The lowest priced Southwest flight from Washington, D.C. Reagan-National Airport to San Antonio from the last 72 hours was $208. Generally, Southwest has 7 flights on this route every week with an average price of $388. Southwest is rated 7.9/10 by our users.
United Airlines Flights From Washington, D.C. Reagan-National Airport to San Antonio
Another popular option for Washington, D.C. Reagan-National Airport to San Antonio flights is United Airlines (7.4/10, 9,804 ratings). United Airlines flies from Washington, D.C. Reagan-National Airport to San Antonio around 6 times per week, with deals starting from $267 round-trip and rising to an average price of around $405.

New Braunfels

Kerrville

Pleasanton

Boerne

Schertz

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Washington, D.C. to San Antonio. momondo saves you time and could save you money on your trip.

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

momondo does allow users to show only those flights to San Antonio from Washington, D.C. which offer a flexible booking policy as well as other useful filters and features.

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

momondo provides multiple filters to help you find the best flight to San Antonio from Washington, D.C.. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Yes momondo offers price alerts on flights to San Antonio from Washington, D.C.. 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 San Antonio 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.

Start using Trips

Find my bookings

Get notified when prices go down

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

1 adult

vie. 7/10

vie. 7/17

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States

Nearby airports

Airlines

Cabin classes

Other United States destinations

Other flights from Washington, D.C. Reagan-National Airport

Complete your trip

Feeling lucky

Cheap flights from Washington, D.C. Reagan-National Airport to San Antonio from $105

Find the cheapest flights from Washington, D.C. Reagan-National Airport to San Antonio

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Southwest flights from Washington, D.C. Reagan-National Airport to San Antonio

Our best Southwest deals on Washington, D.C. Reagan-National Airport to San Antonio flight tickets

Delta flights from Washington, D.C. Reagan-National Airport to San Antonio

Our best Delta deals on Washington, D.C. Reagan-National Airport to San Antonio flight tickets

momondo Fare Finder

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

See travel insights to San Antonio from

How to get the cheapest flight ticket from Washington, D.C. Reagan-National Airport to San Antonio

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

What is the cheapest month to fly to San Antonio?

What is the cheapest day to depart on your flight to San Antonio?

What is the cheapest time of day to depart on your flight to San Antonio?

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

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

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

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

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

What airlines fly to San Antonio?

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

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

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

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

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

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

When to book flights from Washington, D.C. Reagan-National Airport to San Antonio

Cheap Washington, D.C. Reagan-National Airport to San Antonio (DCA to SAT) flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in San Antonio

Frequently asked questions about flying from Washington, D.C. Reagan-National Airport to San Antonio

Best airlines flying from Washington, D.C. Reagan-National Airport to San Antonio

Compare and see reviews for airlines that fly from Washington, D.C. Reagan-National Airport to San Antonio with momondo

Southwest Flights From Washington, D.C. Reagan-National Airport to San Antonio

United Airlines Flights From Washington, D.C. Reagan-National Airport to San Antonio

Traveling to a place near San Antonio?

Why use momondo?

An easier way to manage your San Antonio 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

Airports servicing Texas

Fly your favorite airline to San Antonio

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

Cabin classes currently available on flights to San Antonio

List of cabin classes available on flights landing in San Antonio. Availability may vary depending on flight origin and airline.

Popular cities in the United States

Popular flights according to clicks in the last 7 days on momondo

Fly to other destinations from Washington, D.C. Reagan-National Airport

According to popular flight searches on momondo this year

Complete your trip to San Antonio

Explore popular destinations other users love

According to popular flight searches on momondo this year