$90 Cheap Flights from Washington (DCA) to San Antonio (SAT)

View $90 flight on Sat, May 31, 2025Opens in a new window

Popular airlines from Ronald Reagan Washington National Airport (DCA) to San Antonio International Airport (SAT)

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Find available prices by choosing your travel dates.

Cheap Flights from Washington to San Antonio (DCA-SAT)

Prices were available within the past 7 days and start at $90 for one-way flights and $185 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Southwest Airlines
Tue, Jul 1 - Sat, Jul 5
DCA
Washington
SAT
San Antonio
$185 Roundtrip, found 1 day ago
$185
Roundtrip
found 1 day ago
Select Southwest Airlines flight, departing Tue, Jul 1 from Washington to San Antonio, returning Sat, Jul 5, priced at $185 found 1 day ago
United
Tue, Jul 1 - Sat, Jul 5
DCA
Washington
SAT
San Antonio
$187 Roundtrip, found 1 day ago
$187
Roundtrip
found 1 day ago
Select United flight, departing Tue, Jul 1 from Washington to San Antonio, returning Sat, Jul 5, priced at $187 found 1 day ago
Southwest Airlines
Sun, May 25 - Wed, May 28
DCA
Washington
SAT
San Antonio
$189 Roundtrip, found 20 hours ago
$189
Roundtrip
found 20 hours ago
Select Southwest Airlines flight, departing Sun, May 25 from Washington to San Antonio, returning Wed, May 28, priced at $189 found 20 hours ago
Southwest Airlines
Tue, Jul 1 - Sat, Jul 5
DCA
Washington
SAT
San Antonio
$194 Roundtrip, found 1 day ago
$194
Roundtrip
found 1 day ago
Select Southwest Airlines flight, departing Tue, Jul 1 from Washington to San Antonio, returning Sat, Jul 5, priced at $194 found 1 day ago
Southwest Airlines
Sun, May 25 - Wed, May 28
DCA
Washington
SAT
San Antonio
$199 Roundtrip, found 20 hours ago
$199
Roundtrip
found 20 hours ago
Select Southwest Airlines flight, departing Sun, May 25 from Washington to San Antonio, returning Wed, May 28, priced at $199 found 20 hours ago
American Airlines
Fri, May 30 - Wed, Jun 4
DCA
Washington
SAT
San Antonio
$204 Roundtrip, found 10 hours ago
$204
Roundtrip
found 10 hours ago
Select American Airlines flight, departing Fri, May 30 from Washington to San Antonio, returning Wed, Jun 4, priced at $204 found 10 hours ago
American Airlines
Sat, May 31 - Wed, Jun 4
DCA
Washington
SAT
San Antonio
$205 Roundtrip, found 13 hours ago
$205
Roundtrip
found 13 hours ago
Select American Airlines flight, departing Sat, May 31 from Washington to San Antonio, returning Wed, Jun 4, priced at $205 found 13 hours ago
Southwest Airlines
Sun, May 25 - Wed, May 28
DCA
Washington
SAT
San Antonio
$209 Roundtrip, found 20 hours ago
$209
Roundtrip
found 20 hours ago
Select Southwest Airlines flight, departing Sun, May 25 from Washington to San Antonio, returning Wed, May 28, priced at $209 found 20 hours ago
Delta
Sun, May 25 - Sat, May 31
DCA
Washington
SAT
San Antonio
$237 Roundtrip, found 1 hour ago
$237
Roundtrip
found 1 hour ago
Select Delta flight, departing Sun, May 25 from Washington to San Antonio, returning Sat, May 31, priced at $237 found 1 hour ago
Frontier Airlines
Mon, May 12 - Sun, May 18
DCA
Washington
SAT
San Antonio
$360 Roundtrip, found 16 hours ago
$360
Roundtrip
found 16 hours ago
Select Frontier Airlines flight, departing Mon, May 12 from Washington to San Antonio, returning Sun, May 18, priced at $360 found 16 hours ago
Flights from Washington (DCA) to San Antonio (SAT)
Origin airport
Ronald Reagan Washington National
Destination airport
San Antonio Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Southwest Airlines, United
Roundtrip price
$184
Distance
1378 mi

Washington to San Antonio Flights

The cheapest times to fly from Washington to San Antonio

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Washington to San Antonio are during the month of July. You can find some of the cheapest flights from Washington to San Antonio with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Washington to San Antonio

Sunday is one of the best days to book for cheap flights from Washington to San Antonio: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

How to find cheap round-trip tickets from Washington to San Antonio

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Washington to San Antonio in 2025. You can also book with separate airlines for your outbound and return journeys, from $90 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Washington to San Antonio flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

You could also save big by booking one of Expedia's vacation packages. Bundling together your Washington to San Antonio airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

*Terms apply.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

Frequently asked questions

How much does a flight from Ronald Reagan Washington National Airport (DCA) to San Antonio Intl. Airport (SAT) cost?
Cheap round-trip flights from Ronald Reagan Washington National Airport (DCA) to San Antonio Intl. Airport (SAT) start at $179. This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a American Airlines flight leaving DCA on May 20 2025 and touching down at SAT. The price was last updated on April 24 2025 and has not changed since.
What is the cheapest month to fly from DCA to SAT?
The cheapest flights from DCA to SAT are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Ronald Reagan Washington National Airport (DCA) to San Antonio Intl. Airport (SAT)?
You can’t fly nonstop to San Antonio Intl. Airport (SAT) from Washington, DC (DCA-Ronald Reagan Washington National). However, you can seamlessly travel to San Antonio without any layovers by taking off from Washington Dulles Intl. Airport (IAD).
What is the cheapest airline that flies from DCA to SAT?
Take off from DCA to SAT with American Airlines. This carrier currently offers the lowest one-way fare on this route, starting from $90. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from DCA on May 24 2025. Prices were last updated on April 24 2025 and have not changed since.
How many flights per day from Ronald Reagan Washington National Airport (DCA) to San Antonio Intl. Airport (SAT)?
There are no daily nonstop flights available from Ronald Reagan Washington National Airport (DCA) to San Antonio Intl. Airport (SAT). But you can opt for flights with layovers. Filter your search on Expedia to include one or two stops, and you’ll be soaring above the clouds in no time.
What day of the week has the most flights from DCA to SAT?
Friday is typically the busiest day for flights, while Tuesday tends to be the quietest.* Just remember that flight schedules can vary depending on a number of factors, including the airline and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Ronald Reagan Washington National Airport (DCA) to San Antonio Intl. Airport (SAT)?
To avoid potential delays on the Ronald Reagan Washington National Airport (DCA) to San Antonio Intl. Airport (SAT) route, travel before 3 PM. Departures after this hour have a 22% higher chance of cancellation.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
Is it cheaper to buy a plane ticket from Ronald Reagan Washington National Airport (DCA) to San Antonio Intl. Airport (SAT) last-minute?
Holding off until just before your departure to book a ticket from DCA to SAT generally means paying more. While you may find some last-minute discounts, they’re not always guaranteed. Be flexible with your itinerary to boost your chances of scoring a bargain.
Is it cheaper to book a DCA to SAT flight and hotel package?
Compared with arranging hotels and flights separately, booking a DCA to SAT flight and hotel package with Expedia could result in significant savings. Better still, having everything in one easy place will take the stress out of planning your trip. Just pick your flights and select from our wide range of stays, then personalize your trip with other add-ons like activities and car rentals.
Can I cancel or change the date of my flight from Ronald Reagan Washington National Airport (DCA) to San Antonio Intl. Airport (SAT)?
In most instances, you’re able to cancel or reschedule your DCA to SAT flight. However, there may be additional charges, especially if you made your booking over 24 hours ago. Double-check your itinerary for the airline’s rules and fees on flight changes, or if you’d like further information, go to our Customer Service portal.

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*Available to One Key members.