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Cheap flights from San Antonio to Washington, D.C. from $85

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 5/1. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
6:20 am - 10:43 am
SAT
-
DCA
3h 23mnonstop
American Airlines Logo
5:30 pm - 8:05 pm
DCA
-
SAT
3h 35mnonstop
$249American Airlines
Sat, May 2 - Tue, May 5
American Airlines Logo
6:00 am - 10:12 am
SAT
-
DCA
3h 12mnonstop
American Airlines Logo
5:00 pm - 7:56 pm
DCA
-
SAT
3h 56mnonstop
$250American Airlines
Thu, Mar 26 - Sat, Apr 4
Frontier Logo
4:04 pm - 1:00 pm
SAT
-
DCA
19h 56m
1 stop
Frontier Logo
6:00 pm - 2:19 pm
DCA
-
SAT
21h 19m
1 stop
$254Frontier
Sat, May 2 - Tue, May 5
Frontier Logo
6:45 am - 4:59 pm
SAT
-
DCA
9h 14m
1 stop
Frontier Logo
7:00 am - 12:19 am
DCA
-
SAT
18h 19m
1 stop
$255Frontier
Fri, Mar 27 - Fri, Apr 3
Southwest Logo
6:20 am - 12:15 pm
SAT
-
DCA
4h 55m
1 stop
Southwest Logo
6:10 am - 10:25 am
DCA
-
SAT
5h 15m
1 stop
$260Southwest
Tue, Mar 31 - Tue, Apr 7
Frontier Logo
10:05 am - 1:02 pm
SAT
-
DCA
25h 57m
1 stop
Frontier Logo
8:00 am - 12:17 am
DCA
-
SAT
17h 17m
1 stop
$261Frontier
Mon, Mar 23 - Wed, Mar 25
United Airlines Logo
4:17 pm - 10:15 pm
SAT
-
DCA
4h 58m
1 stop
United Airlines Logo
8:30 am - 3:46 pm
DCA
-
SAT
8h 16m
1 stop
$264United Airlines
Sat, Apr 11 - Tue, Apr 14
Frontier Logo
2:59 pm - 1:00 pm
SAT
-
DCA
21h 01m
1 stop
Frontier Logo
1:59 pm - 2:13 pm
DCA
-
SAT
25h 14m
1 stop
$265Frontier
Sun, Apr 19 - Sat, May 2
Delta Logo
4:44 pm - 10:50 pm
SAT
-
DCA
5h 06m
1 stop
Delta Logo
5:34 pm - 11:08 pm
DCA
-
SAT
6h 34m
1 stop
$269Delta
Fri, Apr 24 - Mon, Apr 27
Southwest Logo
11:45 am - 8:45 pm
SAT
-
DCA
8h 00m
2 stops
Southwest Logo
6:10 am - 10:25 am
DCA
-
SAT
5h 15m
1 stop
$270Southwest
Sat, May 2 - Tue, May 5

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

Our best American Airlines deals on San Antonio to Washington, D.C. Reagan-National Airport flight tickets
American Airlines
May 2
SAT6:20 amSan Antonio
3h 23m
DCA10:43 amWashington, D.C. Reagan-National
May 5
DCA5:30 pmWashington, D.C. Reagan-National
3h 35m
SAT8:05 pmSan Antonio
$249
American Airlines
Mar 26
SAT6:00 amSan Antonio
3h 12m
DCA10:12 amWashington, D.C. Reagan-National
Apr 4
DCA5:00 pmWashington, D.C. Reagan-National
3h 56m
SAT7:56 pmSan Antonio
$250
American Airlines
Mar 27
SAT6:00 amSan Antonio
3h 12m
DCA10:12 amWashington, D.C. Reagan-National
Mar 31
DCA5:50 pmWashington, D.C. Reagan-National
3h 56m
SAT8:46 pmSan Antonio
$273

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

Our best Delta deals on San Antonio to Washington, D.C. Reagan-National Airport flight tickets
Delta
Apr 24
SAT4:44 pmSan Antonio
5h 06m
1 stop
DCA10:50 pmWashington, D.C. Reagan-National
Apr 27
DCA5:34 pmWashington, D.C. Reagan-National
6h 34m
1 stop
SAT11:08 pmSan Antonio
$269
Delta
Apr 10
SAT10:50 amSan Antonio
7h 50m
1 stop
DCA7:40 pmWashington, D.C. Reagan-National
Apr 13
DCA7:33 pmWashington, D.C. Reagan-National
6h 13m
1 stop
SAT12:46 amSan Antonio
$289
Delta
May 7
SAT12:08 pmSan Antonio
5h 20m
1 stop
DCA6:28 pmWashington, D.C. Reagan-National
May 10
DCA6:09 amWashington, D.C. Reagan-National
7h 19m
1 stop
SAT12:28 pmSan Antonio
$324

momondo Fare Finder

 
Customize your flight search to find flights from San Antonio to Washington, D.C. Reagan-National Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated March 4, 2026.
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

Sat 5/2

6:20 am-10:43 am

Nonstop3h 23m

Washington, D.C. Reagan-National

Tue 5/5

5:30 pm-8:05 pm

Nonstop3h 35m

$249

San AntonioWashington, D.C.

SAT - DCA

SATDCA

San Antonio

Thu 3/26

6:00 am-10:12 am

Nonstop3h 12m

Washington, D.C. Reagan-National

Sat 4/4

5:00 pm-7:56 pm

Nonstop3h 56m

$250

San AntonioWashington, D.C.

SAT - DCA

SATDCA

San Antonio

Sat 5/2

4:04 pm-1:00 pm

1 stop19h 56m

Washington, D.C. Reagan-National

Tue 5/5

6:00 pm-2:19 pm

1 stop21h 19m

$254

San AntonioWashington, D.C.

SAT - DCA

SATDCA

San Antonio

Fri 3/27

6:45 am-4:59 pm

1 stop9h 14m

Washington, D.C. Reagan-National

Fri 4/3

7:00 am-12:19 am

1 stop18h 19m

$255

San AntonioWashington, D.C.

SAT - DCA

SATDCA

San Antonio

Tue 3/31

6:20 am-12:15 pm

1 stop4h 55m

Washington, D.C. Reagan-National

Tue 4/7

6:10 am-10:25 am

1 stop5h 15m

$260

San AntonioWashington, D.C.

SAT - DCA

SATDCA

San Antonio

Mon 3/23

10:05 am-1:02 pm

1 stop25h 57m

Washington, D.C. Reagan-National

Wed 3/25

8:00 am-12:17 am

1 stop17h 17m

$261

San AntonioWashington, D.C.

SAT - DCA

SATDCA

San Antonio

Sat 4/11

4:17 pm-10:15 pm

1 stop4h 58m

Washington, D.C. Reagan-National

Tue 4/14

8:30 am-3:46 pm

1 stop8h 16m

$264

San AntonioWashington, D.C.

SAT - DCA

SATDCA

San Antonio

Sun 4/19

2:59 pm-1:00 pm

1 stop21h 01m

Washington, D.C. Reagan-National

Sat 5/2

1:59 pm-2:13 pm

1 stop25h 14m

$265

San AntonioWashington, D.C.

SAT - DCA

SATDCA

San Antonio

Fri 4/24

4:44 pm-10:50 pm

1 stop5h 06m

Washington, D.C. Reagan-National

Mon 4/27

5:34 pm-11:08 pm

1 stop6h 34m

$269

San AntonioWashington, D.C.

SAT - DCA

SATDCA

San Antonio

Sat 5/2

11:45 am-8:45 pm

2 stops8h 00m

Washington, D.C. Reagan-National

Tue 5/5

6:10 am-10:25 am

1 stop5h 15m

$270

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Washington, D.C. from

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

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 cheapest month to fly to Washington, D.C. Reagan-National Airport?

The month of September is, on average, the cheapest month to fly to Washington, D.C. Reagan-National Airport from San Antonio, with most prices found around $268. If you aren’t able to travel to Washington, D.C. Reagan-National Airport during the month of September, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $301.

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

The cheapest day to depart from San Antonio to Washington, D.C. Reagan-National Airport is on a Saturday. Travelers who choose to depart for Washington, D.C. Reagan-National Airport on a Saturday will often find tickets for as low as $310. Flights from San Antonio to Washington, D.C. Reagan-National Airport on a Sunday will generally be more expensive and average around $401. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

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

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

You are more likely to see cheaper flights to Washington, D.C. Reagan-National Airport from San Antonio when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. Reagan-National Airport for around $342 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. Reagan-National Airport from San Antonio for as low as $209 on momondo.

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

There are 3 cabin classes available to choose from on San Antonio to Washington, D.C. Reagan-National 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. Reagan-National Airport flights?

You could potentially save up to 15% on your flight if you consider stops on a San Antonio to Washington, D.C. Reagan-National Airport flight.

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

As of March 2026, prices for San Antonio to Washington, D.C. Reagan-National Airport flights are approximately 26% cheaper when compared to flights at the same time last year.

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

Are you open to changing your travel dates? Check out the ideal times to fly from San Antonio to Washington, D.C. Reagan-National Airport 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. Reagan-National Airport (SAT to DCA) flight deals and tips

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

Best Price Found

$253

Fastest flight time

3h 11m

Direct flights

Every day
The best one-way flight to Washington, D.C. Reagan-National Airport from San Antonio in the past 72 hours is $253. The best round-trip flight deal from San Antonio to Washington, D.C. Reagan-National Airport found on momondo in the last 72 hours is $283.
The fastest flight from San Antonio to Washington, D.C. Reagan-National Airport takes 3h 11m
Direct flights go from San Antonio to Washington, D.C. Reagan-National Airport every day.
Search flight deals

  • How far is San Antonio to Washington, D.C. Reagan-National by plane?

    San Antonio and Washington, D.C. Reagan-National are 1383.3 mi apart from one another. Typically, this will take 3h 11m by plane in normal conditions.

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

    Prices for flights from San Antonio Airport to Washington, D.C. Reagan-National Airport are updated daily.

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

  • How old do you have to be to fly from San Antonio Airport to Washington, D.C. Reagan-National Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Antonio Airport to Washington, D.C. Reagan-National Airport.

  • What documentation or ID do you need to fly to Washington, D.C. Reagan-National Airport?

    The required travel and health documents for your Washington, D.C. Reagan-National Airport 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. Reagan-National Airport. 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. Reagan-National Airport?

  • What is the most popular airline from San Antonio to Washington, D.C. Reagan-National Airport?

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

Compare and see reviews for airlines that fly from San Antonio to Washington, D.C. Reagan-National Airport with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $85Free CancellationRating
5.7
3,041 reviews
Search Frontier flights
DeltaPriceFrom $153Free CancellationRating
7.9
8,245 reviews
Search Delta flights
American AirlinesPriceFrom $213Free CancellationRating
7.1
11,378 reviews
Search American Airlines flights
SouthwestPriceFrom $220Free CancellationRating
8.0
4,304 reviews
Search Southwest flights
United AirlinesPriceFrom $259Free CancellationRating
7.4
9,382 reviews
Search United Airlines flights

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

    Southwest flight deals from San Antonio to Washington, D.C. Reagan-National Airport start from $220 round-trip. Over the 2 Southwest flights for this route in a normal week, average airfare is usually $336 round-trip - but some users have found much cheaper deals with momondo.

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

    Another popular option for San Antonio to Washington, D.C. Reagan-National Airport flights is United Airlines (7.4/10, 9,382 ratings). United Airlines flies from San Antonio to Washington, D.C. Reagan-National Airport around 1 time per week, with deals starting from $259 round-trip and rising to an average price of around $348.

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

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
National Harbor
Gettysburg
Arlington
Waldorf
Woodbridge
Colonial Beach
Laurel
Towson
Silver Spring
Gaithersburg
Fredericksburg
Rockville
Tysons
Manassas
Springfield
Bethesda
Fairfax
Linthicum Heights
Reston

Why use momondo?

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

It is quick and easy to find San Antonio to Washington, D.C. flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Washington, D.C. that suits you.

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

Yes. All flights to Washington, D.C. from San Antonio on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo helps you find the best flight between San Antonio and Washington, D.C. by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Price alerts on flights to Washington, D.C. from San Antonio are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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