Seattle to Chicago

SEAORD

Fly from Seattle to Chicago starting at USD 130 with Frontier Airlines.Best fare available on Sep 13, 2026.Limited seats. Better plans. Book before it's gone.

Seattle to Chicago cheapest flights this week

7 Sept
Alaska Airlines
06:00SEA
10:07ORD
DirectUSD 154VIEW DEAL
8 Sept
Frontier Airlines
19:06SEA
22:23ORD
1 StopUSD 190VIEW DEAL
9 Sept
Frontier Airlines
21:45SEA
03:38ORD
1 StopUSD 170VIEW DEAL
11 Sept
Frontier Airlines
19:45SEA
03:38ORD
1 StopUSD 170VIEW DEAL
12 Sept
Alaska Airlines
00:16SEA
04:20ORD
DirectUSD 219VIEW DEAL
13 Sept
Alaska Airlines
17:48SEA
21:59ORD
DirectUSD 177VIEW DEAL
13 Sept
Frontier Airlines
19:00SEA
03:42ORD
1 StopUSD 130VIEW DEAL
13 Sept
Frontier Airlines
21:45SEA
03:38ORD
1 StopUSD 175VIEW DEAL
13 Sept
Alaska Airlines
00:16SEA
04:20ORD
DirectUSD 176VIEW DEAL
14 Sept
Frontier Airlines
19:41SEA
08:01ORD
1 StopUSD 142VIEW DEAL

Seattle to Chicago monthly flight fare trend

Sep
from USD 125
Oct
from USD 125
Nov
from USD 201
Dec
No flights
Jan
No flights
Feb
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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