Portland to Washington
PDXIAD
Fly from Portland to Washington starting at USD 209 with Frontier Airlines.
Best fare available on Sep 19, 2026.
Limited seats. Better plans. Book before it's gone.
Portland to Washington cheapest flights this week
Portland to Washington monthly flight fare trend
Sep
from USD 209
Oct
No flights
Nov
No flights
Dec
from USD 275
Jan
from USD 304
Feb
No flights
Airport Details
Origin
Portland
Portland International Airport (PDX)
Portland, PDX
Zone
Los Angeles
Elev
31 ft
Destination
Washington
Washington Dulles International Airport (IAD)
Dulles, IAD
Zone
New York
Elev
312 ft
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