Southwest® flights from Washington, D.C. (Reagan National) to San Antonio from $145
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Low fares from Washington, D.C. (Reagan National) to San Antonio
$
Washington, D.C. (Reagan National) (DCA)to
San Antonio (SAT)
Depart: 09/06/2026
One-way
Basic
From
$145
Seen: 9 hrs ago
Washington, D.C. (Reagan National) (DCA)to
San Antonio (SAT)
Depart: 11/06/2026
One-way
Basic
From
$165
Seen: 22 hrs ago
Washington, D.C. (Reagan National) (DCA)to
San Antonio (SAT)
Depart: 10/07/2026
One-way
Basic
From
$165
Seen: 11 hrs ago
Washington, D.C. (Reagan National) (DCA)to
San Antonio (SAT)
Depart: 09/01/2026
One-way
Basic
From
$165
Seen: 12 hrs ago
Washington, D.C. (Reagan National) (DCA)to
San Antonio (SAT)
Depart: 09/08/2026
One-way
Basic
From
$165
Seen: 9 hrs ago
Washington, D.C. (Reagan National) (DCA)to
San Antonio (SAT)
Depart: 10/05/2026
One-way
Basic
From
$165
Seen: 11 hrs ago
Explore flights from Washington, D.C. (Reagan National) to San Antonio
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Flight Details
Departing from:
Ronald Reagan National Airport
Arriving at:
San Antonio International Airport
Distance:
1380 miles
Route Information
152† Weekly flights
† Weekly flights based on DOT published scheduled average flights Monday through Sunday between 9/1/2025 and 9/30/2025. Note: route may not operate every day of the week.
‡ Nonstop flights based on DOT published scheduled average flights Monday through Sunday between 9/1/2025 and 9/30/2025.
Questions we hear the most
There are 152 weekly flights from Washington, D.C. (Reagan National) to San Antonio on Southwest Airlines.
To find the lowest fares by day and time to fly Washington, D.C. (Reagan National) to San Antonio with Southwest, check out our Low Fare Calendar.
You can rent a car at San Antonio International Airport book yours with your flight.
Yes! Flights from Washington, D.C. (Reagan National) to San Antonio—or from here or there to anywhere—can be changed with no change fees. Fare difference may apply.
Check the status of your upcoming Southwest flight.
Check out the Southwest Airlines® Help Center for answers about everything Southwest.
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