Southwest® flights from Washington, D.C. (Reagan National) to San Diego from $159
expand_more
1 Passenger
expand_morePromo Code
expand_moretoday
today
Low fares from Washington, D.C. (Reagan National) to San Diego
$
Washington, D.C. (Reagan National) (DCA)to
San Diego (SAN)
Depart: 09/22/2026
One-way
Basic
From
$159
Seen: 4 hrs ago
Washington, D.C. (Reagan National) (DCA)to
San Diego (SAN)
Depart: 10/06/2026
One-way
Basic
From
$159
Seen: 41 minutes ago
Washington, D.C. (Reagan National) (DCA)to
San Diego (SAN)
Depart: 09/30/2026
One-way
Basic
From
$159
Seen: 20 hrs ago
Washington, D.C. (Reagan National) (DCA)to
San Diego (SAN)
Depart: 09/29/2026
One-way
Basic
From
$159
Seen: 19 hrs ago
Washington, D.C. (Reagan National) (DCA)to
San Diego (SAN)
Depart: 11/03/2026
One-way
Basic
From
$159
Seen: 20 hrs ago
Washington, D.C. (Reagan National) (DCA)to
San Diego (SAN)
Depart: 10/07/2026
One-way
Basic
From
$164
Seen: 20 hrs ago
Explore flights from Washington, D.C. (Reagan National) to San Diego
location_on
location_on
Flight Details
Departing from:
Ronald Reagan National Airport
Arriving at:
San Diego International Airport
Distance:
2276 miles
Route Information
151† 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 151 weekly flights from Washington, D.C. (Reagan National) to San Diego on Southwest Airlines.
To find the lowest fares by day and time to fly Washington, D.C. (Reagan National) to San Diego with Southwest, check out our Low Fare Calendar.
You can rent a car at San Diego International Airport book yours with your flight.
Yes! Flights from Washington, D.C. (Reagan National) to San Diego—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.
Explore Flights from Other Popular Origins
Popular Flights from Washington, D.C. (Reagan National)