Chicago to Seattle

ORDSEA

Fly from Chicago to Seattle starting at USD 142 with Alaska Airlines.Best fare available on Nov 15, 2026.Limited seats. Better plans. Book before it's gone.

Chicago to Seattle cheapest flights this week

15 Nov
Alaska Airlines
07:00ORD
11:50SEA
DirectUSD 142VIEW DEAL
16 Nov
Frontier Airlines
06:30ORD
17:12SEA
1 StopUSD 282VIEW DEAL
18 Nov
Frontier Airlines
06:30ORD
17:12SEA
1 StopUSD 203VIEW DEAL
19 Nov
Frontier Airlines
17:15ORD
14:37SEA
1 StopUSD 143VIEW DEAL
21 Nov
Frontier Airlines
22:00ORD
22:38SEA
1 StopUSD 212VIEW DEAL
24 Nov
American Airlines
13:08ORD
17:59SEA
DirectUSD 150VIEW DEAL
26 Nov
Frontier Airlines
22:00ORD
22:38SEA
1 StopUSD 205VIEW DEAL
2 Dec
Frontier Airlines
06:21ORD
14:27SEA
1 StopUSD 145VIEW DEAL
8 Dec
American Airlines
12:54ORD
17:58SEA
DirectUSD 158VIEW DEAL
9 Dec
Frontier Airlines
06:21ORD
14:31SEA
1 StopUSD 142VIEW DEAL

Chicago to Seattle monthly flight fare trend

Nov
from USD 142
Dec
from USD 115
Jan
from USD 146
Feb
from USD 147
Mar
from USD 142
Apr
from USD 201

Airport Details

Origin

Chicago

Chicago O'Hare International Airport (ORD)

Chicago, ORD
Zone

Chicago

Elev

680 ft

Destination

Seattle

Seattle–Tacoma International Airport (SEA)

Seattle, SEA
Zone

Los Angeles

Elev

433 ft

Flights from Chicago

Flights from Chicago to AtlantaFlights from Chicago to AustinFlights from Chicago to BostonFlights from Chicago to CharlotteFlights from Chicago to DenverFlights from Chicago to DallasFlights from Chicago to DetroitFlights from Chicago to NewarkFlights from Chicago to Fort LauderdaleFlights from Chicago to Honolulu