DCA - SAT

$78 Find Cheap Flights from Reagan Washington National Airport to San Antonio

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Reagan-National to San Antonio departing on 1/24. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to San Antonio

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to San Antonio, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to San Antonio, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$258
Overall average: $395
Frontier
Sun 12/14Thu 12/18
DCA - SAT • 1 stop
Cheapest non-stop
$279
Typical prices: $228-$249
American Airlines
Wed 12/10Wed 12/17
DCA - SAT • Non-stop
Our travelers' advice
AI-generated summary based on content written by travel experts
DCA is easily accessible via the city’s metro line.
The #5 VIA bus connects SAT to downtown affordably.
Expert advice
Expert advice
Expert advice
Expert advice
When to book
3 weeks
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 31% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
September
Cheapest • 18% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to San Antonio!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from Reagan-National to San Antonio (DCA-SAT)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Reagan-National to San Antonio that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Reagan-National to San Antonio

Sun, Dec 14 - Thu, Dec 18
Frontier Logo
8:00 am - 7:11 pmDCA-SAT
12h 11m1 stop
Frontier Logo
2:09 pm - 1:01 pmSAT-DCA
21h 52m1 stop
$258Frontier
Find Deal
Wed, Dec 3 - Fri, Dec 5
Frontier Logo
6:00 pm - 6:58 pmDCA-SAT
25h 58m1 stop
Frontier Logo
7:55 pm - 9:59 pmSAT-DCA
25h 04m1 stop
$261Frontier
Find Deal
Fri, Dec 12 - Sun, Dec 14
Frontier Logo
8:00 am - 7:00 pmDCA-SAT
12h 00m1 stop
Frontier Logo
10:25 am - 9:59 pmSAT-DCA
10h 34m1 stop
$262Frontier
Find Deal
Thu, Jan 15 - Sun, Jan 18
Southwest Logo
12:40 pm - 8:20 pmDCA-SAT
8h 40m1 stop
Southwest Logo
10:15 am - 4:00 pmSAT-DCA
4h 45m1 stop
$264Southwest
Find Deal
Thu, Feb 12 - Tue, Feb 17
Delta Logo
5:59 pm - 10:55 pmDCA-SAT
5h 56m1 stop
Delta Logo
12:55 pm - 10:12 pmSAT-DCA
8h 17m1 stop
$269Delta
Find Deal
Mon, Dec 15 - Tue, Dec 30
Frontier Logo
8:00 am - 6:58 pmDCA-SAT
11h 58m1 stop
Frontier Logo
12:18 pm - 9:59 pmSAT-DCA
8h 41m1 stop
$274Frontier
Find Deal
Mon, Jan 19 - Mon, Jan 26
Multiple Airlines Logo
1:00 pm - 11:52 pmDCA-SAT
35h 52m2 stops
Multiple Airlines Logo
8:24 pm - 9:59 pmSAT-DCA
24h 35m1 stop
$275Multiple Airlines
Find Deal
Mon, Dec 8 - Fri, Dec 12
Frontier Logo
8:00 am - 6:58 pmDCA-SAT
11h 58m1 stop
Frontier Logo
7:55 pm - 9:59 pmSAT-DCA
25h 04m1 stop
$276Frontier
Find Deal
Thu, Dec 11 - Sun, Dec 14
Frontier Logo
8:00 am - 6:58 pmDCA-SAT
11h 58m1 stop
Frontier Logo
10:25 am - 9:59 pmSAT-DCA
10h 34m1 stop
$278Frontier
Find Deal
Wed, Dec 10 - Wed, Dec 17
American Airlines Logo
7:44 pm - 10:35 pmDCA-SAT
3h 51mnonstop
American Airlines Logo
6:48 am - 11:00 amSAT-DCA
3h 12mnonstop
$279American Airlines
Find Deal
Booking Insights

KAYAK's insights & trends for Reagan-National to San Antonio flights

Get data-powered insights and trends into flights from Reagan-National to San Antonio to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Reagan Washington National Airport to San Antonio?

The average price of all round-trip flights from Washington, D.C. Reagan-National Airport to San Antonio clicked on KAYAK for each day over the last 12 months.

When flying from Reagan Washington National Airport to San Antonio, you should consider leaving on a Saturday and avoid Sundays if you are looking for the best rates. For your return to Reagan Washington National Airport, you’ll find the best rates on Saturdays and the most expensive ones on Sundays.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. Reagan-National Airport to San Antonio, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Washington, D.C. Reagan-National Airport to San Antonio is September, where tickets cost $289 (return) on average. On the other hand, the most expensive months are November and January, where the average cost of round-trip tickets is $429 and $398 respectively.

Can I save money by flying with a layover from Washington, D.C. Reagan-National Airport to San Antonio?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $364 on average.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Washington, D.C. Reagan-National Airport to San Antonio, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Washington, D.C. Reagan-National Airport to San Antonio, you should book around 3 weeks before departure, which saves you about 31% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 21 weeks before departure.

Expert advice

Expert advice for your flight from Reagan-National to San Antonio

 
Snippets provided in this section are AI-generated based on a summarization of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airports
DCA

DCA is easily accessible via the city’s metro line, reaching the terminal in under 30 minutes, avoiding traffic hassles.

SAT

The #5 VIA bus connects SAT to downtown San Antonio in about 30 minutes, offering a cost-effective travel option.

Our travel experts
Ramsey Qubein

Ramsey Qubein

Expert on DCA

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more
Brandon Schultz

Brandon Schultz

Expert on SAT

Brandon Schultz

Brandon Schultz

Brandon Schultz is an award-winning food and travel writer based in New York City. His work has appeared in Forbes, AAA, Thrillist, Travel + Leisure, and The Daily Meal, among many others, and he is the author of 6 books, including 3 cookbooks.

Read more

Good to know

Low seasonJune
Cheapest flight$78
Best time to beat the crowds but there is an average 2% increase in price.
Most popular time to fly with an average 11% increase in price.
Flight from Reagan Washington National Airport to San Antonio

When to book flights from Reagan-National to San Antonio

Are your dates flexible? Find out the best times to travel from Reagan-National to San Antonio based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Reagan Washington National Airport to San Antonio flights

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

    In the last 3 days, the lowest price for a flight from Washington, D.C. Reagan-National Airport to San Antonio was $78 for a one-way ticket and $258 for a round-trip.

  • Do I need a passport to fly between Reagan Washington National Airport and San Antonio?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airports will I be using when flying from Reagan Washington National Airport to San Antonio?

    On your way to San Antonio, you’ll fly out from Washington, D.C. Reagan-National. You’ll be landing at San Antonio.

  • Which airlines offer Wi-Fi service onboard planes from Reagan Washington National Airport to San Antonio?

    Only American Airlines offers inflight Wi-Fi service on the Reagan Washington National Airport to San Antonio flight route.

  • Which aircraft models fly most regularly from Reagan Washington National Airport to San Antonio?

    The Boeing 737-800 is the aircraft model that flies most regularly on the Reagan Washington National Airport to San Antonio flight route.

  • Which airline alliances offer flights from Reagan Washington National Airport to San Antonio?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between Reagan Washington National Airport and San Antonio, with Star Alliance being the most commonly used for this route.

  • On which days can I fly direct from Reagan Washington National Airport to San Antonio?

    There are nonstop flights from Reagan Washington National Airport to San Antonio on a daily basis.

  • Which is the best airline for flights from Washington, D.C. to San Antonio, Southwest or Delta?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to San Antonio are Southwest and Delta. With an average price for the route of $442 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $342 and an overall rating of 7.9.

  • How does KAYAK find such low prices on flights from Reagan Washington National Airport to San Antonio?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Reagan Washington National Airport to San Antonio.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Reagan Washington National Airport to San Antonio?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Antonio from Reagan Washington National Airport is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Reagan Washington National Airport to San Antonio?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Antonio with an airline and back to Reagan Washington National Airport with another airline. Booking your flights between Reagan Washington National Airport and SAT can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Reagan Washington National Airport to San Antonio?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Antonio from Reagan Washington National Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Washington, D.C. Reagan-National Airport to San Antonio

  • Looking for a cheap flight? 25% of our users found flights on this route for $308 or less one-way and $279 or less round-trip.

Prefer to fly direct from Reagan Washington National Airport to San Antonio?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Washington, D.C. Reagan-National to San Antonio.
Find which airlines fly direct from Washington, D.C. Reagan-National Airport to San Antonio Airport, which days they fly and book direct flights.

Direct departures

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

Monday

American Airlines

American Airlines

Tuesday

American Airlines

American Airlines

Wednesday

American Airlines

American Airlines

Thursday

American Airlines

American Airlines

Friday

American Airlines

American Airlines

Saturday

American Airlines

American Airlines

Sunday

American Airlines

American Airlines

See more direct flights

Direct returns

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

Monday

American Airlines

American Airlines

Tuesday

American Airlines

American Airlines

Wednesday

American Airlines

American Airlines

Thursday

American Airlines

American Airlines

Friday

American Airlines

American Airlines

Saturday

American Airlines

American Airlines

Sunday

American Airlines

American Airlines

See more direct flights

Reviews of the top 4 airlines serving from Reagan-National to San Antonio

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to San Antonio. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Reagan-National to San Antonio? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4254 reviews
8.0Comfort
7.0Food
8.1Boarding
7.5Entertainment
8.6Crew
Airline reviews

No delays and arrived to destination 30 min early. Staff was super friendly.

10.0 ExcellentIlevba, Nov 2025DCA - DAL
Read more Southwest reviews

No delays and arrived to destination 30 min early. Staff was super friendly.

Everything a cheap airline should be at normal airline rates.

Full cans of soda would be nice. A choice between two snacks would be appreciated.

Tried watching free movie and it kept freezing so I couldn’t finish.

I was re-booked onto another flight because my original flight was delayed and I would have missed my connector. I ended up in the “C” group after paying extra to be in the “A “ group on the original flight. At least if you’re going to re-book people, re-book them into the same group.

Was good. I miss the free 2 checked bags. That was part of what made Southwest special

Multiple delays and gate changes. Arrived at final destination 6 hours late. All rental cars had been taken.

The movies using Southwest WiFi kept pausing and I had to restart multiple times.

First, my flight was a usual flight nothing exceptional or unexpected. Over all it was a normal, good flight! Second, your questionaire is wholly lacking in the proper options to which one can answer a question. Often on short flights, there is no food let alone entertainment so why isn't that reflected in your questionaire? A simple "not applicable" would cover that issue appropriately but no, your form arbitrarily enters an answer based on the initial assessment which normally isn't factual. Until you provide an accurate means of assessing flights, I'll no longer be completing of these unimpressive and misleading assessements. Thank you!

Easy to book and to get check in and get on and off.

First, Delta needs more flights to/from Miami. Second, a 1000pm leaving at 1230pm is unacceptable from their biggest airport world hub. Another aircraft could have been used such as the aircraft scheduled to be used in the morning for that exact same route. Yes, I did get me there but the lack of sleep the next day didn't help me enjoy my entire trip since I was busy with activities during the weekend. This can be and is expected from Spirit (going bankrupt) and Frontier (despite they're nickel and dimers). But from Delta's World Hub? That's totally unacceptable!

This flight was straightforward and without difficulty. Service was OK, but I continue to be underwhelmed by level of attention given to Sky Priority passengers.

It would’ve been nice for all that money to have a more substantial snack for free. I remember once upon a time getting a very nice turkey sandwich with Swiss cheese on whole wheat bread for no charge along with a drink. I guess those days are gone. it’s a little insulting being given a cookie or a bag of baked chips Going forward I’ll just bring my own.

Our flight from SFO to MSP was right on time on 11/15/2025. No delays. As we approached MSP at about 8 pm, we circled in the air until 8:40 pm so I don't call that efficient for MSP. I think the captain should announce the delay and why. (as if we all don't know that we are just circling around the area, slowing down, speeding up, slowing down.) Thank you. Marilyn Fischer

Service in business class was not impressive. I ordered coffee with dinner and then watched other people get 2 refills before I got my 1 cup of coffee, and only after I pressed the attendant button overhead. Furthermore, the seats in the forward cabin need maintenance on this 737-800: the upholstery is detaching from the seat frame, at least on the backs of seats 1C, 1D.

The ticket agents in West Palm Beach on Friday afternoon Nov. 7th were incredible in getting us on an earlier plane to Atlanta during the government shutdown. Had the taken our original flight we would have missed our connection. She did this on her own, We didn't even have to ask, and she did it all with a smile and showing genuine concern that we would be taken care of. We are very grateful and thankful. We fly often, and now we will be sure to fly Delta.

Flight delayed then cancelled. Misplaced luggage. Still do not have. Rented car 1100 mile drive. I had to buy some overnight Hotels clothes toiletries gas food at my expense. Still not home. Not sure where luggage is. Over 4 hours on hold to Felta

I truly love flying with Delta. They have always treated me with the upmost respect

Our flight attendant in FIRST CLASS was one of the worst I’ve ever had. She was not at all pleasant, nor particularly good at her service.

Everything went well and was good. Nothing exceptional, but no complaints either. Cheap seats are pretty comfortable.

Starlink wifi on the Embraer E175 is an excellent experience. I was able to connect and work from IAD all the way to approach into BTV.

7 hours delayed due to operational issues on United’s end. Basically laziness.

Short flight but an "eager to help" crew made the journey more enjoyable!

During booking, I kept trying submitting my payment from the Mexican website and it didn't work. After I had the idea to change it to the Canadian website, it worked but I had to be charged the equivalent of 50 CAD more. I received the clear instruction that I would only be able to check-in at the airport and that it was impossible to select a seat 24 hours before departure, that I had to pay 144 CAD to do so, although not only was I able to check-in 24 hours before departure, but I could have selected my seats for free then. All in all, I almost threw $200 out the window due to misleading information. Besides, the app kept crashing, the information to get to the gate on the app was inaccurate, my gate was switched and I was only informed once in the air (luckily I had noticed the departure pannel), I was not addressed in my language beforehand and even if I tried I was immediately answered in English (which meant the crew understood but didn't want to answer accordingly), there was only one snack & beverage service on my medium haul flight and no beverage service on my short haul flight. To be fair, the planes were comfortable, the crew apart from the language issue was helpful, dynamic and engaging, the plane was clean and the directions were clear and direct. United has a lot of potential to be one of my favourite airlines, but the devil is in the details and a lot of them missed the target.

Better WiFi. I cannot understand that in 2025, United is so behind on a technology that is now a necessity and still painfully unreliable, slow and keeps disconnecting.

Great service on board. Boarding a bit slow due to process. Food was pretty average.

Very small cramped plane for an international flight. Everything else was good, but it was maybe the smallest comfort-wise I've ever been on for longer than 3-4 hours and the trip was 7.5

Flight was delayed 3 hours. No food and drink vouchers was provided. They offered a mini pretzel bag and water .

Staff was rude. Didn’t give water for 2 hours. Worst service

Was on time until within 1 hour of flight-how does that happen? Staff very friendly.

We were told the flight was delayed 5 times, then it was moved to the next day.

I have a gluten allergy so didn't have any food

Baggage handling poor. Second time this has happened. My bag went to San Francisco instead of Fiji. No apology. Luckily Nadi airport staff are fantastic. My bag arrived in Fiji the next day.

Flight delay was communicated before leaving for airport which caused it to be a non-event. Great flight and crew!

Wish a flight with more than 2 hours with some snack rather than just cookie/biscuit.

The flight attendant, a black woman with curly hair who sat near Row 21, was wonderful and kind.

Flight delayed and missed connection. Rescheduled flight cancelled after 6 hrs wait. Rerouted thru ORD, flight cancelled, overnight stay in ORD. Still in the air on new flight!

Delayed delayed delayed and no offer for food or vouchers

A couple ladies from the crew were so rude and nasty. Thought they were mad at having to be there especially if you asked a question. This will make me think twice next time if I book a flight with you.

It took way too long to diagnose and solve the problem of a broken crew member cabin seat. Though compensation for the volunteer who left the flight was very kind.

Everything you need to know for your flight from Reagan-National to San Antonio

Information on your arrival and departure airports