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Find low faresSouthwest® flights from Portland, OR to Washington, D.C. (Reagan National) from $139
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Low fares from Portland, OR to Washington, D.C. (Reagan National)
$
Portland, OR (PDX)to
Washington, D.C. (Reagan National) (DCA)
Depart: 03/13/2026
One-way
Basic
From
$139
Seen: 12 hrs ago
Portland, OR (PDX)to
Washington, D.C. (Reagan National) (DCA)
Depart: 03/06/2026
One-way
Basic
From
$139
Seen: 4 hrs ago
Portland, OR (PDX)to
Washington, D.C. (Reagan National) (DCA)
Depart: 03/25/2026
One-way
Basic
From
$159
Seen: 5 hrs ago
Portland, OR (PDX)to
Washington, D.C. (Reagan National) (DCA)
Depart: 03/05/2026
One-way
Basic
From
$159
Seen: 16 hrs ago
Portland, OR (PDX)to
Washington, D.C. (Reagan National) (DCA)
Depart: 03/26/2026
One-way
Basic
From
$174
Seen: 15 hrs ago
Portland, OR (PDX)to
Washington, D.C. (Reagan National) (DCA)
Depart: 03/06/2026
One-way
Choice
From
$179
Seen: 4 hrs ago
Explore flights from Portland, OR to Washington, D.C. (Reagan National)
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Flight Details
Departing from:
Portland International Airport
Arriving at:
Ronald Reagan National Airport
Distance:
2350 miles
Route Information
80† 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 80 weekly flights from Portland, OR to Washington, D.C. (Reagan National) on Southwest Airlines.
To find the lowest fares by day and time to fly Portland, OR to Washington, D.C. (Reagan National) with Southwest, check out our Low Fare Calendar.
You can rent a car at Ronald Reagan National Airport book yours with your flight.
Yes! Flights from Portland, OR to Washington, D.C. (Reagan National)—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.