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Find low faresSouthwest® flights from San Diego to Washington, D.C. (Dulles) from $109
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Low fares from San Diego to Washington, D.C. (Dulles)
$
San Diego (SAN)to
Washington, D.C. (Dulles) (IAD)
Depart: 03/07/2026
One-way
Basic
From
$109
Seen: 23 hrs ago
San Diego (SAN)to
Washington, D.C. (Dulles) (IAD)
Depart: 03/04/2026
One-way
Basic
From
$109
Seen: 4 hrs ago
San Diego (SAN)to
Washington, D.C. (Dulles) (IAD)
Depart: 03/03/2026
One-way
Basic
From
$109
Seen: 10 hrs ago
San Diego (SAN)to
Washington, D.C. (Dulles) (IAD)
Depart: 03/31/2026
One-way
Basic
From
$129
Seen: 20 hrs ago
San Diego (SAN)to
Washington, D.C. (Dulles) (IAD)
Depart: 03/24/2026
One-way
Basic
From
$129
Seen: 10 hrs ago
San Diego (SAN)to
Washington, D.C. (Dulles) (IAD)
Depart: 04/01/2026
One-way
Basic
From
$129
Seen: 20 hrs ago
Explore flights from San Diego to Washington, D.C. (Dulles)
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Flight Details
Departing from:
San Diego International Airport
Arriving at:
Dulles International Airport
Distance:
2253 miles
Route Information
60† 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 60 weekly flights from San Diego to Washington, D.C. (Dulles) on Southwest Airlines.
To find the lowest fares by day and time to fly San Diego to Washington, D.C. (Dulles) with Southwest, check out our Low Fare Calendar.
You can rent a car at Dulles International Airport book yours with your flight.
Yes! Flights from San Diego to Washington, D.C. (Dulles)—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.