Flights from Chicago to Seattle Tacoma

Our cheapest offers for flights from Chicago to Seattle Tacoma

Here you can compare cheap flights from Chicago (CHI) to Seattle Tacoma (SEA) for one-way or return trips. The following offers were searched for and found on idealo during the last few days. Or start your own flight search to Seattle Tacoma. Prices and availability may change at any time.

Outbound Return Airlines Shop Baggage Price
Best option
Chicago
Seattle-Tacoma
Outbound
02/13/26
direct
AS0409
04h 51min
Return
02/26/26
direct
AS0328
04h 04min
Alaska Airlines ?
$239
Chicago
Seattle-Tacoma
Outbound
02/13/26
direct
AS0409
04h 51min
Return
02/26/26
direct
AS0410
04h 05min
Alaska Airlines ?
$262
Chicago
Seattle-Tacoma
Outbound
02/13/26
direct
HA6299
04h 51min
Return
02/26/26
direct
HA6817
04h 05min
Hawaiian Airlines
$262
Chicago
Seattle-Tacoma
Outbound
02/13/26
direct
AS0409
04h 51min
Return
02/26/26
direct
AS0328
04h 04min
Alaska Airlines
$263
Chicago
Seattle-Tacoma
Outbound
02/13/26
direct
AS0409
04h 51min
Return
02/26/26
direct
AS0410
04h 05min
Alaska Airlines ?
$280
Chicago
Seattle-Tacoma
Outbound
04/03/26
direct
AS0409
04h 44min
Return
04/16/26
direct
AS0328
04h 00min
Alaska Airlines ?
$333
Chicago
Seattle-Tacoma
Outbound
04/03/26
direct
HA6299
04h 39min
Return
04/16/26
direct
HA6817
04h 08min
Hawaiian Airlines ?
$348
Chicago
Seattle-Tacoma
Outbound
04/03/26
direct
AS0409
04h 44min
Return
04/16/26
direct
HA6669
04h 00min
Alaska Airlines ?
$357
Chicago
Seattle-Tacoma
Outbound
02/13/26
direct
UA2211
04h 34min
Return
02/26/26
direct
UA2019
03h 57min
United Airlines ?
$365
Chicago
Seattle-Tacoma
Outbound
04/03/26
direct
AS0584
04h 41min
Return
04/16/26
direct
AS0328
04h 00min
Alaska Airlines ?
$366
Prices based on recent searches, subject to last-minute changes
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Tips and tricks to help you find cheap flights from Chicago to Seattle Tacoma

Favorite airline: Alaska Airlines
Alaska Airlines is the most popular airline for flights from Chicago to Seattle-Tacoma.
Alaska Airlines
33 %
United Airlines
19 %
Delta
16 %
Direct flights are the cheapest connection
Flights with a stopover are on average $20.00 more expensive than direct flights.
non stop flight
1 stop
04h 41min
07h 46min
US$ 119
US$ 139
The favorite connection is non-stop
51 % of all bookings on the route Chicago to Seattle-Tacoma are for non-stop flights.
Route
bookings
Direct flights
04h 41min, from US$ 119
51 %
1 stopover Las Vegas - McCarran International Airport, NV
14h 38min, from US$ 200
14 %
1 stopover Minneapolis - St. Paul International Airport, MN
13h 57min, from US$ 329
11 %

Important flight information

Flight information: Chicago - Seattle-Tacoma

Roundtrip from US$ 238,61
Flight duration min. 04:38 / max. 07:45
Return flight duration min. 03:44/ max. 07:40
Distance 2790 km
Flights per week 122
Departure airport Airport Chicago-IL, all airports (CHI)
Arrival airport Airport Seattle-Tacoma International Airport, WA (SEA)
Destination country Flights to United States
Alternative routes to United States
Alternative flights to Seattle-Tacoma
Flight destinations with a similar price
Flight destinations with a similar price