Portland to Seattle

PDXSEA

Fly from Portland to Seattle starting at USD 118 with Alaska Airlines.Best fare available on Sep 12, 2026.Limited seats. Better plans. Book before it's gone.

Portland to Seattle cheapest flights this week

15 Aug
Alaska Airlines
12:03PDX
13:03SEA
DirectUSD 246VIEW DEAL
22 Aug
Alaska Airlines
15:00PDX
15:55SEA
DirectUSD 263VIEW DEAL
28 Aug
Alaska Airlines
11:48PDX
12:50SEA
DirectUSD 128VIEW DEAL
12 Sept
Frontier Airlines
17:30PDX
18:26SEA
1 StopUSD 121VIEW DEAL
12 Sept
Alaska Airlines
09:20PDX
10:17SEA
DirectUSD 118VIEW DEAL
1 Apr
Alaska Airlines
10:40PDX
11:35SEA
DirectUSD 180VIEW DEAL
29 Jun
United Airlines
10:57PDX
23:21SEA
1 StopUSD 383VIEW DEAL

Portland to Seattle monthly flight fare trend

Aug
from USD 128
Sep
from USD 118
Oct
No flights
Nov
No flights
Dec
No flights
Jan
No flights

Airport Details

Origin

Portland

Portland International Airport (PDX)

Portland, PDX
Zone

Los Angeles

Elev

31 ft

Destination

Seattle

Seattle–Tacoma International Airport (SEA)

Seattle, SEA
Zone

Los Angeles

Elev

433 ft

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