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
Chicago
Seattle-Tacoma
Outbound
09/25/25
1 Stopover (DEN)
F91483, F93405
20h 30min
Return
10/05/25
1 Stopover (DEN)
F93406, F93174
25h 25min
Frontier Airlines
$154
Best option
Chicago
Seattle-Tacoma
Outbound
11/09/25
direct
AA2069
04h 50min
Return
12/07/25
direct
DL2299
04h 03min
American Airlines ?
$182
Chicago
Seattle-Tacoma
Pay attention to transfer at connecting flight
Outbound
11/09/25
1 Stopover (MSP)
SY0262, SY0285
25h 07min
Return
12/07/25
2 Stopovers (MSP, MCO)
SY0286, SY0341, NK2530
24h 53min
Sun Country Airlines
$398
Chicago
Seattle-Tacoma
Outbound
09/25/25
1 Stopover (DEN)
F91483, F93405
20h 30min
Return
10/05/25
1 Stopover (DEN)
F93406, F93174
25h 25min
Frontier Airlines
$155
Chicago
Seattle-Tacoma
Outbound
11/09/25
1 Stopover (DEN)
F91483, F91175
08h 13min
Return
12/07/25
direct
AS0570
04h 09min
Frontier Airlines
$176
Chicago
Seattle-Tacoma
Outbound
11/09/25
direct
HA4979
04h 40min
Return
12/07/25
1 Stopover (SAN)
HA6880, HA7493
07h 42min
Hawaiian Airlines ?
$181
Chicago
Seattle-Tacoma
Outbound
11/09/25
1 Stopover (DEN)
F91483, F91175
08h 13min
Return
12/07/25
direct
HA6817
04h 09min
Frontier Airlines
$182
Chicago
Seattle-Tacoma
Outbound
09/25/25
1 Stopover (DEN)
F91483, F93405
20h 30min
Return
10/05/25
1 Stopover (DEN)
F93406, F93174
25h 25min
Frontier Airlines ?
$194
Chicago
Seattle-Tacoma
Outbound
11/09/25
direct
AS1464
04h 40min
Return
12/07/25
1 Stopover (DEN)
F93406, F93172
21h 29min
Alaska Airlines ?
$196
Chicago
Seattle-Tacoma
Outbound
11/09/25
direct
HA4979
04h 40min
Return
12/07/25
direct
HA6291
04h 09min
Hawaiian Airlines ?
$205
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
$ 119
$ 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 $ 119
51 %
1 stopover Las Vegas - McCarran International Airport, NV
14h 38min, from $ 200
14 %
1 stopover Minneapolis - St. Paul International Airport, MN
13h 57min, from $ 329
11 %

Important flight information

Flight information: Chicago - Seattle-Tacoma

Roundtrip from $ 153,93
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