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

Currently priced at $153, Delta will fly you from San Antonio to Washington, D.C. Reagan-National Airport and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Southwest and American Airlines - these airlines can fly you to your destination from $194 and $208, respectively. Delta is 54% cheaper than the average price of flights available within the next 90 days to this destination.

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

The cheapest airline one-way is American Airlines, with whom users have recently found tickets for as low as $94. However, be on the lookout for offers from United Airlines and Southwest, as they are both options that can get you from San Antonio to Washington, D.C. Reagan-National Airport for a low price.

In terms of precipitation, rainfall in Washington, D.C. Reagan-National Airport 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. Reagan-National Airport when rainfall is around 2.6 in.

If weather is an important factor for your trip to Washington, D.C. Reagan-National Airport, 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 cheapest flights from San Antonio to Washington, D.C. Reagan-National Airport?

Looking for the cheapest flight from San Antonio to Washington, D.C. Reagan-National Airport? While on average our users pay $367, our data indicates the cheapest price to be $99. The most popular route (San Antonio - Washington, D.C. Reagan-National), is priced around $196.

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

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

Most accurate provider : When it comes to deals on San Antonio-Washington, D.C. Reagan-National Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on San Antonio-Washington, D.C. Reagan-National Airport flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from San Antonio-Washington, D.C. Reagan-National Airport flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on San Antonio-Washington, D.C. Reagan-National Airport flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Antonio-Washington, D.C. Reagan-National Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

What airport do you fly from for flights from San Antonio to Washington, D.C. Reagan-National?

For a flight from San Antonio to Washington, D.C. Reagan-National, you will be flying from San Antonio. San Antonio (SAT) is just 7.6 mi from the center of the city. San Antonio is the only San Antonio airport and it handles 2 outbound flights to Washington, D.C. Reagan-National per day. 4 airlines have flights to Washington, D.C. Reagan-National from San Antonio on a regular basis.

Can I find deals for flights from San Antonio to Reagan-National that include hotel bookings?

Yes. In addition to deals on San Antonio to Reagan-National flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from San Antonio to Reagan-National?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Antonio to Reagan-National.

Can I find deals for business class flights from San Antonio to Reagan-National?

Yes. Cheapflights offers flight deals from San Antonio to Reagan-National by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$69+ Flights from San Antonio to Washington, D.C. Reagan-National Airport

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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. Reagan-National are usually found in September or February, booked 78 days in advance, depart on a Saturday or Wednesday and return on a Saturday

Cheap flight deals from San Antonio to Reagan-National

Cheapest flights from San Antonio to Reagan-National
Explore the most affordable flight options available from San Antonio to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 4, 2025.

Thu 12/254:05 pmSAT - DCA

1 stop5h 01mUnited Airlines

Wed 12/318:15 amDCA - SAT

1 stop8h 38mUnited Airlines

Deal found 12/2

$264

Mon 12/87:43 pmSAT - DCA

1 stop16h 23mFrontier

Thu 12/112:00 pmDCA - SAT

1 stop30h 00mFrontier

Deal found 12/2

$267

Thu 12/255:10 amSAT - DCA

1 stop5h 27mDelta

Thu 1/16:00 amDCA - SAT

1 stop6h 08mDelta

Deal found 12/3

$269

Tue 12/306:45 amSAT - DCA

1 stop29h 16mFrontier

Fri 1/26:00 pmDCA - SAT

1 stop19h 36mFrontier

Deal found 12/2

$271

Sun 12/77:56 pmSAT - DCA

1 stop16h 10mFrontier

Wed 12/101:00 pmDCA - SAT

1 stop26h 11mFrontier

Deal found 12/2

$276

Wed 12/247:05 amSAT - DCA

1 stop7h 00mDelta

Thu 1/16:00 amDCA - SAT

1 stop6h 08mDelta

Deal found 12/2

$279

Fri 12/266:45 amSAT - DCA

1 stop14h 14mFrontier

Sat 1/36:00 pmDCA - SAT

1 stop7h 17mFrontier

Deal found 12/2

$281

Mon 12/157:43 pmSAT - DCA

1 stop16h 23mFrontier

Thu 12/188:00 amDCA - SAT

1 stop28h 21mFrontier

Deal found 12/3

$285

Fri 12/266:45 amSAT - DCA

1 stop14h 14mFrontier

Fri 1/28:00 amDCA - SAT

1 stop29h 36mFrontier

Deal found 12/2

$291

Wed 12/242:51 pmSAT - DCA

1 stop6h 10mDelta

Wed 12/3110:17 amDCA - SAT

1 stop6h 23mDelta

Deal found 12/3

$294

Thu 12/113:06 pmSAT - DCA

1 stop21h 00mFrontier

Sun 12/142:00 pmDCA - SAT

1 stop29h 58mFrontier

Deal found 12/2

$297

Best flights from San Antonio to Reagan-National
Discover carefully curated flight deals from San Antonio to Reagan-National that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 4, 2025.

Wed 2/186:10 amSAT - DCA

2 stops8h 15mSouthwest

Mon 2/233:30 pmDCA - SAT

2 stops7h 25mSouthwest

Deal found 12/2

$259

Fri 2/1311:43 amSAT - DCA

1 stop6h 01mUnited Airlines

Mon 2/166:00 amDCA - SAT

1 stop5h 47mUnited Airlines

Deal found 12/2

$264

Thu 12/255:10 amSAT - DCA

1 stop5h 27mDelta

Thu 1/16:00 amDCA - SAT

1 stop6h 08mDelta

Deal found 12/3

$269

Tue 12/305:15 amSAT - DCA

1 stop5h 14mUnited Airlines

Fri 1/26:00 pmDCA - SAT

1 stop6h 12mUnited Airlines

Deal found 12/2

$269

Thu 1/15:10 amSAT - DCA

1 stop5h 28mDelta

Mon 1/53:40 pmDCA - SAT

1 stop8h 43mDelta

Deal found 12/2

$279

Wed 12/247:05 amSAT - DCA

1 stop7h 00mDelta

Wed 12/318:20 amDCA - SAT

1 stop8h 20mDelta

Deal found 12/2

$279

Thu 12/254:45 pmSAT - DCA

1 stop5h 11mDelta

Wed 12/317:20 amDCA - SAT

1 stop6h 08mDelta

Deal found 12/3

$289

Thu 1/297:40 amSAT - DCA

1 stop5h 09mUnited Airlines

Sat 1/3112:40 pmDCA - SAT

1 stop5h 53mUnited Airlines

Deal found 12/2

$323

Wed 12/1711:51 amSAT - DCA

1 stop6h 08mDelta

Sun 1/47:59 amDCA - SAT

1 stop5h 29mDelta

Deal found 12/2

$309

Fri 12/195:20 amSAT - DCA

1 stop5h 17mDelta

Thu 1/16:00 amDCA - SAT

1 stop7h 28mDelta

Deal found 12/1

$309

Last-minute flights from San Antonio to Reagan-National
Discover last-minute flight deals from San Antonio to Reagan-National. Data last updated December 4, 2025 and is based on user searches.

Mon 12/87:43 pmSAT - DCA

1 stop16h 23mFrontier

Thu 12/112:00 pmDCA - SAT

1 stop30h 00mFrontier

Deal found 12/2

$267

Mon 12/157:43 pmSAT - DCA

1 stop16h 23mFrontier

Thu 12/188:00 amDCA - SAT

1 stop28h 21mFrontier

Deal found 12/3

$285

Wed 12/247:05 amSAT - DCA

1 stop7h 00mDelta

Wed 12/318:20 amDCA - SAT

1 stop8h 20mDelta

Deal found 12/2

$279

Thu 12/254:05 pmSAT - DCA

1 stop5h 01mUnited Airlines

Wed 12/318:15 amDCA - SAT

1 stop8h 38mUnited Airlines

Deal found 12/2

$264

Thu 12/255:10 amSAT - DCA

1 stop5h 27mDelta

Thu 1/16:00 amDCA - SAT

1 stop6h 08mDelta

Deal found 12/3

$269

Fri 12/266:45 amSAT - DCA

1 stop14h 14mFrontier

Sat 1/36:00 pmDCA - SAT

1 stop7h 17mFrontier

Deal found 12/2

$281

Tue 12/306:45 amSAT - DCA

1 stop29h 16mFrontier

Fri 1/26:00 pmDCA - SAT

1 stop19h 36mFrontier

Deal found 12/2

$271

Thu 1/16:20 amSAT - DCA

1 stop4h 45mSouthwest

Tue 1/61:55 pmDCA - SAT

1 stop8h 40mSouthwest

Deal found 12/2

$288

Fri 1/92:06 pmSAT - DCA

1 stop5h 50mUnited Airlines

Mon 1/124:28 pmDCA - SAT

1 stop5h 53mUnited Airlines

Deal found 12/3

$256

Fri 1/910:13 amSAT - DCA

1 stop25h 48mFrontier

Sun 1/116:00 pmDCA - SAT

2 stops18h 00mFrontier

Deal found 12/3

$257

Thu 1/155:00 amSAT - DCA

1 stop4h 48mAmerican Airlines

Mon 1/195:25 pmDCA - SAT

Nonstop4h 00mAmerican Airlines

Deal found 12/2

$276

Wed 1/286:10 amSAT - DCA

2 stops8h 15mSouthwest

Sat 1/318:00 amDCA - SAT

2 stops8h 50mSouthwest

Deal found 12/3

$254

One-way flights from San Antonio to Reagan-National
Search for one-way flight options from San Antonio to Reagan-National. Find affordable one-way fares based on user searches. Data last updated December 4, 2025.

Wed 3/44:13 pmSAT - DCA

1 stop19h 52mFrontier

Deal found 12/2

$69

Mon 2/28:24 pmSAT - DCA

1 stop24h 35mFrontier

Deal found 12/3

$70

Sun 2/2210:13 amSAT - DCA

1 stop25h 52mFrontier

Deal found 12/2

$74

Sun 1/258:24 pmSAT - DCA

1 stop24h 35mFrontier

Deal found 12/3

$75

Tue 3/310:15 amSAT - DCA

1 stop4h 45mSouthwest

Deal found 12/3

$76

Tue 1/63:55 pmSAT - DCA

1 stop29h 04mFrontier

Deal found 12/3

$78

Tue 2/310:15 amSAT - DCA

1 stop4h 45mSouthwest

Deal found 12/4

$83

Sun 2/18:24 pmSAT - DCA

1 stop15h 38mFrontier

Deal found 12/2

$90

Sun 1/1810:15 amSAT - DCA

1 stop10h 44mFrontier

Deal found 12/2

$100

Find flight deals from San Antonio to Reagan-National

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$254 (Southwest)
One-way from	$69 (Kiwi.com)
Popular in	March
Cheapest in	September
Average price	$358
Good round-trip deal	$348 or less
Good one-way deal	$148 or less

Provider with most accurate pricing for San Antonio-Washington, D.C. Reagan-National flight deals.

Search Deals

Provider most trusted by Cheapflights users for San Antonio-Washington, D.C. Reagan-National flights.

Search Deals

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

Search Deals

One-way flight from San Antonio to Washington, D.C. Reagan-National

Search Deals

High demand for flights, 3% potential price rise

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Price to beat on a round-trip flight from San Antonio to Washington, D.C. Reagan-National.

Search Deals

Price to beat on a one-way flight from San Antonio to Washington, D.C. Reagan-National.

Search Deals

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

San AntonioWashington, D.C.

SAT - DCA

SATDCA

San Antonio

Wed 2/18

6:10 am-3:25 pm

2 stops8h 15m

Washington, D.C. Reagan-National

Mon 2/23

3:30 pm-9:55 pm

2 stops7h 25m

$259

San AntonioWashington, D.C.

SAT - DCA

SATDCA

San Antonio

Fri 2/13

11:43 am-6:44 pm

1 stop6h 01m

Washington, D.C. Reagan-National

Mon 2/16

6:00 am-10:47 am

1 stop5h 47m

$264

San AntonioWashington, D.C.

SAT - DCA

SATDCA

San Antonio

Thu 12/25

5:10 am-11:37 am

1 stop5h 27m

Washington, D.C. Reagan-National

Thu 1/1

6:00 am-11:08 am

1 stop6h 08m

$269

San AntonioWashington, D.C.

SAT - DCA

SATDCA

San Antonio

Tue 12/30

5:15 am-11:29 am

1 stop5h 14m

Washington, D.C. Reagan-National

Fri 1/2

6:00 pm-11:12 pm

1 stop6h 12m

$269

San AntonioWashington, D.C.

SAT - DCA

SATDCA

San Antonio

Thu 1/1

5:10 am-11:38 am

1 stop5h 28m

Washington, D.C. Reagan-National

Mon 1/5

3:40 pm-11:23 pm

1 stop8h 43m

$279

San AntonioWashington, D.C.

SAT - DCA

SATDCA

San Antonio

Wed 12/24

7:05 am-3:05 pm

1 stop7h 00m

Washington, D.C. Reagan-National

Wed 12/31

8:20 am-3:40 pm

1 stop8h 20m

$279

San AntonioWashington, D.C.

SAT - DCA

SATDCA

San Antonio

Thu 12/25

4:45 pm-10:56 pm

1 stop5h 11m

Washington, D.C. Reagan-National

Wed 12/31

7:20 am-12:28 pm

1 stop6h 08m

$289

San AntonioWashington, D.C.

SAT - DCA

SATDCA

San Antonio

Wed 12/17

11:51 am-6:59 pm

1 stop6h 08m

Washington, D.C. Reagan-National

Sun 1/4

7:59 am-12:28 pm

1 stop5h 29m

$309

San AntonioWashington, D.C.

SAT - DCA

SATDCA

San Antonio

Fri 12/19

5:20 am-11:37 am

1 stop5h 17m

Washington, D.C. Reagan-National

Thu 1/1

6:00 am-12:28 pm

1 stop7h 28m

$309

San AntonioWashington, D.C.

SAT - DCA

SATDCA

San Antonio

Thu 1/29

7:40 am-1:49 pm

1 stop5h 09m

Washington, D.C. Reagan-National

Sat 1/31

12:40 pm-5:33 pm

1 stop5h 53m

$323

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/3

Showing 1-10 of 21 results

Compare providers for flights from San Antonio to Reagan-National

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Antonio to Reagan-National in December.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
eDreams	Price Accuracy3 stars	Trust Score*3 stars
Priceline	Price Accuracy1 star	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on San Antonio-Washington, D.C. Reagan-National Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on San Antonio-Washington, D.C. Reagan-National Airport flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from San Antonio-Washington, D.C. Reagan-National Airport flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on San Antonio-Washington, D.C. Reagan-National Airport flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Antonio-Washington, D.C. Reagan-National Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from San Antonio to Reagan-National

Have a flexible travel schedule? Discover the best time to fly to Reagan-National 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. Reagan-National Airport

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

The best time to book flights from San Antonio to Washington, D.C. Reagan-National Airport is 78 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, May is the cheapest month in which you can book a flight from San Antonio to Washington, D.C. Reagan-National Airport (average of $118). Flying from San Antonio to Washington, D.C. Reagan-National Airport in January is currently the most expensive (average of $234). 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 DCA?

Unlike in the afternoon, when flights are generally more expensive, you can save up to 55% on flights from San Antonio to Washington, D.C. Reagan-National Airport by exploring options for tickets in the evening.

Reviews of airlines servicing Reagan-National

Peruse reviews from past customers who have flown with Southwest, Delta, and United Airlines from San Antonio to Washington, D.C. Reagan-National Airport 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

4,250 reviews

Reviews

1 / 20

2.0

Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Southwest

8.0

Very good

4,250 reviews

Southwest

8.0

Very good

4,250 reviews

Reviews

1 / 20

2.0

Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Delta

7.9

Good

8,011 reviews

Southwest

8.0

Very good

4,250 reviews

Reviews

1 / 20

2.0

Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

United Airlines

7.4

Good

9,066 reviews

Southwest

8.0

Very good

4,250 reviews

Reviews

1 / 20

2.0

Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

American Airlines

7.2

Good

11,047 reviews

Southwest

8.0

Very good

4,250 reviews

Reviews

1 / 20

2.0

Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Related info for your journey

What airport do you fly from for flights from San Antonio to Washington, D.C. Reagan-National?
For a flight from San Antonio to Washington, D.C. Reagan-National, you will be flying from San Antonio. San Antonio (SAT) is just 7.6 mi from the center of the city. San Antonio is the only San Antonio airport and it handles 2 outbound flights to Washington, D.C. Reagan-National per day. 4 airlines have flights to Washington, D.C. Reagan-National from San Antonio on a regular basis.
How long is the flight from San Antonio to Washington, D.C. Reagan-National Airport?
For as low as $269, Southwest can have you in Washington, D.C. Reagan-National Airport from San Antonio in 5h 27m. The distance from San Antonio to Washington, D.C. Reagan-National Airport is about 1378 mi. Both multi-stop and nonstop flights can be found to your destination and back.
What are the cheapest airlines flying from San Antonio to Washington, D.C. Reagan-National Airport round-trip?
Currently priced at $153, Delta will fly you from San Antonio to Washington, D.C. Reagan-National Airport and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Southwest and American Airlines - these airlines can fly you to your destination from $194 and $208, respectively. Delta is 54% cheaper than the average price of flights available within the next 90 days to this destination.
What are the cheapest airlines to fly from San Antonio to Washington, D.C. Reagan-National Airport one-way?
The cheapest airline one-way is American Airlines, with whom users have recently found tickets for as low as $94. However, be on the lookout for offers from United Airlines and Southwest, as they are both options that can get you from San Antonio to Washington, D.C. Reagan-National Airport for a low price.
What are the cheapest flights from San Antonio to Washington, D.C. Reagan-National Airport?
Looking for the cheapest flight from San Antonio to Washington, D.C. Reagan-National Airport? While on average our users pay $367, our data indicates the cheapest price to be $99. The most popular route (San Antonio - Washington, D.C. Reagan-National), is priced around $196.
Can I find deals for flights from San Antonio to Reagan-National that include hotel bookings?
Yes. In addition to deals on San Antonio to Reagan-National flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from San Antonio to Reagan-National?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Antonio to Reagan-National.
Can I find deals for business class flights from San Antonio to Reagan-National?
Yes. Cheapflights offers flight deals from San Antonio to Reagan-National 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. Reagan-National Airport?
Currently, May is the cheapest month in which you can book a flight from San Antonio to Washington, D.C. Reagan-National Airport (average of $118). Flying from San Antonio to Washington, D.C. Reagan-National Airport in January is currently the most expensive (average of $234). 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.

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Top 4 airlines flying from San Antonio to Reagan-National

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$153	Average$335	FlexibilityNo cancel fee	On-timeN/A
Southwest	Cheapest$194	Average$378	FlexibilityNo cancel fee	On-time63%
American Airlines	Cheapest$208	Average$327	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$259	Average$369	FlexibilityNo cancel fee	On-time69%

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$69+ Cheap flights from San Antonio (SAT) to Reagan-National (DCA)

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 3/4. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from San Antonio to Reagan-National 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. Reagan-National are usually found in September or February, booked 78 days in advance, depart on a Saturday or Wednesday and return on a Saturday

Cheap flight deals from San Antonio to Reagan-National

Cheapest flights from San Antonio to Reagan-NationalExplore the most affordable flight options available from San Antonio to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 4, 2025.

Explore the most affordable flight options available from San Antonio to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 4, 2025.

Find flight deals from San Antonio to Reagan-National

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Cheapflights Fare Finder

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

Compare providers for flights from San Antonio to Reagan-National

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Antonio to Reagan-National in December.

Best time to book a flight from San Antonio to Reagan-National

Have a flexible travel schedule? Discover the best time to fly to Reagan-National from San Antonio with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from San Antonio to Washington, D.C. Reagan-National Airport

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

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

What is the cheapest time of day to fly from SAT to DCA?

Reviews of airlines servicing Reagan-National

Related info for your journey

Find useful and relevant information for your journey from San Antonio to Reagan-National. 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. Reagan-National?

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

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

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

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Alternative routes for San Antonio to Reagan-National

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Top 4 airlines flying from San Antonio to Reagan-National

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Cheapest flights from San Antonio to Reagan-National
Explore the most affordable flight options available from San Antonio to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 4, 2025.