Portland to Washington
PDXIAD
Fly from Portland to Washington starting at USD 195 with Frontier Airlines.
Best fare available on Oct 4, 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
No flights
Oct
from USD 195
Nov
from USD 212
Dec
from USD 258
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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