Seattle to Chicago

SEAORD

Fly from Seattle to Chicago starting at USD 147 with Frontier Airlines.Best fare available on Oct 2, 2026.Limited seats. Better plans. Book before it's gone.

Seattle to Chicago cheapest flights this week

30 Sept
Frontier Airlines
21:45SEA
03:38ORD
1 StopUSD 198VIEW DEAL
1 Oct
Alaska Airlines
17:51SEA
21:59ORD
DirectUSD 153VIEW DEAL
1 Oct
Frontier Airlines
21:45SEA
03:38ORD
1 StopUSD 181VIEW DEAL
1 Oct
Alaska Airlines
00:16SEA
04:20ORD
DirectUSD 397VIEW DEAL
2 Oct
Frontier Airlines
19:41SEA
19:35ORD
1 StopUSD 147VIEW DEAL
2 Oct
Frontier Airlines
19:45SEA
03:38ORD
1 StopUSD 175VIEW DEAL
3 Oct
Alaska Airlines
00:16SEA
04:20ORD
DirectUSD 242VIEW DEAL
5 Oct
Frontier Airlines
19:45SEA
03:38ORD
1 StopUSD 212VIEW DEAL
6 Oct
Frontier Airlines
10:57SEA
03:38ORD
1 StopUSD 200VIEW DEAL
13 Oct
United Airlines
07:00SEA
11:15ORD
DirectUSD 162VIEW DEAL

Seattle to Chicago monthly flight fare trend

Sep
from USD 198
Oct
from USD 107
Nov
from USD 201
Dec
No flights
Jan
from USD 151
Feb
from USD 154

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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