Seattle to Chicago

SEAORD

Fly from Seattle to Chicago starting at USD 132 with Frontier Airlines.Best fare available on Aug 1, 2026.Limited seats. Better plans. Book before it's gone.

Seattle to Chicago cheapest flights this week

8 Jul
Frontier Airlines
20:13SEA
03:37ORD
1 StopUSD 144VIEW DEAL
8 Jul
Alaska Airlines
00:17SEA
04:20ORD
DirectUSD 172VIEW DEAL
8 Jul
Alaska Airlines
21:28SEA
03:00ORD
1 StopUSD 151VIEW DEAL
9 Jul
Frontier Airlines
19:06SEA
18:52ORD
1 StopUSD 173VIEW DEAL
12 Jul
American Airlines
23:56SEA
04:09ORD
DirectUSD 214VIEW DEAL
12 Jul
Alaska Airlines
00:17SEA
04:20ORD
DirectUSD 174VIEW DEAL
31 Jul
Frontier Airlines
19:06SEA
18:52ORD
1 StopUSD 172VIEW DEAL
1 Aug
Frontier Airlines
20:13SEA
03:37ORD
1 StopUSD 132VIEW DEAL
12 Aug
Frontier Airlines
19:06SEA
18:52ORD
1 StopUSD 136VIEW DEAL
12 Aug
Frontier Airlines
20:13SEA
03:37ORD
1 StopUSD 137VIEW DEAL

Seattle to Chicago monthly flight fare trend

Jul
from USD 144
Aug
from USD 132
Sep
from USD 133
Oct
No flights
Nov
from USD 201
Dec
No flights

Airport Details

Origin

Seattle

Seattle–Tacoma International Airport (SEA)

Seattle, SEA
Zone

Los Angeles

Elev

433 ft

Destination

Chicago

Chicago O'Hare International Airport (ORD)

Chicago, ORD
Zone

Chicago

Elev

680 ft

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