Portland to Seattle

PDXSEA

Fly from Portland to Seattle starting at USD 121 with Frontier Airlines.Best fare available on Sep 12, 2026.Limited seats. Better plans. Book before it's gone.

Portland to Seattle cheapest flights this week

2 Aug
Alaska Airlines
09:19PDX
10:21SEA
DirectUSD 183VIEW DEAL
3 Aug
Alaska Airlines
05:00PDX
05:53SEA
DirectUSD 160VIEW DEAL
4 Aug
Alaska Airlines
17:30PDX
18:33SEA
DirectUSD 172VIEW DEAL
5 Aug
Alaska Airlines
17:30PDX
18:33SEA
DirectUSD 177VIEW DEAL
6 Aug
Alaska Airlines
08:19PDX
09:14SEA
DirectUSD 139VIEW DEAL
7 Aug
Alaska Airlines
05:00PDX
05:53SEA
DirectUSD 197VIEW DEAL
28 Aug
Alaska Airlines
11:48PDX
12:50SEA
DirectUSD 128VIEW DEAL
12 Sept
Frontier Airlines
17:30PDX
18:26SEA
1 StopUSD 121VIEW DEAL

Portland to Seattle monthly flight fare trend

Jul
No flights
Aug
from USD 128
Sep
from USD 121
Oct
No flights
Nov
No flights
Dec
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

Flights from Portland

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