Cheap Flights from Seattle, WA to Chicago, IL from $304

Return flight: Chicago – Seattle
Cheap Flights Flights Schedule

On Cheapflightsplus.com you will find 15 direct and 112 connecting flights from Seattle to Chicago. You can compare airfare deals from 5 airlines and multiple travel sites from $304, book and save on cheap plane tickets and last minute offers. Also check out SEA-CHI flight schedule to find best flight time, convenient departure and arrival airports.

Flight Information

Below we will explain in detail what the flights cost on the destination from Seattle to Chicago depends on and how to choose the most interesting flight option for you.

Distance between Seattle and Chicago is 2786 miles. Time difference between the cities is 2h. Airplanes depart 05:00 to 23:59 from 3 Seattle airports and arrive 05:00 to 23:59 to 7 Chicago airports. Average flight time is 4h 10m.

  • The fastest flight 3h 57m
  • Average flight time 4h 10m
  • The earliest flight 05:00
  • The latest flight 23:59
  • Distance 1732 ml

Best Flights from Seattle to Chicago Today

Take a look at the list of non stop flights and flights with layovers from Seattle to Chicago with the lowest price of $304. The fastest direct flight takes 3h 57m and the fastest connecting – 5h 51m.
Price Departure Arrival Flight Duration Airline Flight
from $324
Find flight
17:49
Seattle
Seattle-Tacoma Intl
 23:59
Chicago
O'Hare International
 4h 10m Alaska Airlines
AS538
from $338
Find flight
17:49
Seattle
Seattle-Tacoma Intl
 23:59
Chicago
O'Hare International
 4h 10m Hawaiian Airlines
HA6819
from $348
Find flight
23:59
Seattle
Seattle-Tacoma Intl
 05:56+1 день
Chicago
O'Hare International
 3h 57m United Airlines
UA2651
from $304
Find flight
12:42
Seattle
Seattle-Tacoma Intl
 00:38+1 день
Chicago
O'Hare International
 9h 56m
layover
4h 23m - Denver
 Frontier Airlines
F93406
F93172
from $328
Find flight
12:32
Seattle
Seattle-Tacoma Intl
 23:59
Chicago
O'Hare International
 9h 27m
layover
2h 20m - San Diego
 Alaska Airlines
AS621
AS1493
from $319
Find flight
21:35
Seattle
Seattle-Tacoma Intl
 15:59+2 дня
Chicago
O'Hare International
 40h 24m
layover
8h 46m - Las Vegas
24h 7m - Phoenix
 Frontier Airlines
F94204
F91020
F91828
from $372
Find flight
22:08
Seattle
Seattle-Tacoma Intl
 00:57+2 дня
Chicago
O'Hare International
 24h 49m
layover
5h 45m - Phoenix
11h 35m - Denver
 Frontier Airlines
F91724
F91376
F93172
Show all tickets
*Departure and arrival times - local. Prices indicated for one-way flights. Information updated on March 27, 2026

The cheapest months to travel to Chicago are april (from 304 $), march (from 319 $), january (from 319 $).

What is the lowest airfare Seattle to Chicago?

The cheapest plane ticket found by our users is $304. This airfare is for economy class on one-way F93406 flight by Frontier Airlines for April 4, 2026 which leaves Seattle-Tacoma Intl in Seattle at 12:42 am and arrives at Chicago O'Hare International at 00:38.

Economy class
$304
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Business class
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First class
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Flight Schedule Seattle (Washington) to Chicago (Illinois)

06:00 — 12:01
4h 1m flight time
Find flight
from$346
Seattle — Chicago
AS356 Alaska Airlines
06:00 — 12:01
4h 1m flight time
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from$370
Seattle — Chicago
HA4812 Hawaiian Airlines
07:00 — 13:06
4h 6m flight time
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from$348
Seattle — Chicago
UA1653 United Airlines
07:00 — 13:12
4h 12m flight time
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from$377
Seattle — Chicago
UA2618 United Airlines
09:07 — 15:14
4h 7m flight time
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from$418
Seattle — Chicago
AS265 Alaska Airlines
09:07 — 15:14
4h 7m flight time
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from$438
Seattle — Chicago
HA6845 Hawaiian Airlines
10:48 — 16:59
4h 11m flight time
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from$511
Seattle — Chicago
UA464 United Airlines
11:35 — 23:29
9h 54m flight time
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from$814
Seattle — Chicago
UA1482 United Airlines
12:12 — 18:26
4h 14m flight time
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from$418
Seattle — Chicago
AS410 Alaska Airlines
12:12 — 18:26
4h 14m flight time
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from$440
Seattle — Chicago
HA6817 Hawaiian Airlines
12:42 — 00:38+1day
9h 56m flight time
Find flight
from$304
12:42 — 16:37 Seattle — Denver
F93406 Frontier Airlines
4h 23m stop
21:00 — 00:38 Denver — Chicago
F93172 Frontier Airlines
17:49 — 23:59
4h 10m flight time
Find flight
from$324
Seattle — Chicago
AS538 Alaska Airlines
17:49 — 23:59
4h 10m flight time
Find flight
from$338
Seattle — Chicago
HA6819 Hawaiian Airlines
21:35 — 15:59+2days
40h 24m flight time
Find flight
from$319
21:35 — 00:09 Seattle — Las Vegas
F94204 Frontier Airlines
8h 46m stop
08:55 — 10:17 Las Vegas — Phoenix
F91020 Frontier Airlines
24h 7m stop
10:24 — 15:59 Phoenix — Chicago
F91828 Frontier Airlines
23:59 — 05:56+1day
3h 57m flight time
Find flight
from$348
Seattle — Chicago
UA2651 United Airlines
Full flight schedule will help you in detecting at what time planes fly from Seattle to Chicago. You can also specify the concrete flights and airlines on the route and how long the flight actually is. Use the calendar for today, tomorrow or other specific date as some flights are available only on certain days of the week.
*Departure and arrival times - local. Updated on March 27, 2026.

Popular Airlines on the Route

The flight Seattle — Chicago is served by 5 regular airlines and 2 low-cost airlines. Most of the flights on this route are operated by Alaska Airlines - 33 departures per week at the price of from $ 324 . And the most expensive tickets are offered by Alaska Airlines airline - from $ 3951.

Direct flights

There are 15 nonstop flights on the route. The fastest direct flight is UA2651 by United Airlines takes 3h 57m and the cheapest is F93406 by Frontier Airlines for $324.

  • AS - Alaska Airlines
    from $324
    Find
  • HA - Hawaiian Airlines
    from $338
    Find
  • UA - United Airlines
    from $348
    Find
See more direct flights

Connecting Flights

There are 112 flights with layovers on the route. The fastest connecting flight is HA6501 by Hawaiian Airlines takes 5h 51m and the cheapest is F93406 by Frontier Airlines for $304.

  • AS - Alaska Airlines
    from $328
    Find
  • F9 - Frontier Airlines
    from $304
    Find
  • HA - Hawaiian Airlines
    from $348
    Find
  • UA - United Airlines
    from $357
    Find
  • WS - WestJet
    from $674
    Find
See more connecting flights

Airports

You can fly from Seattle to Chicago from 3 airports (Boeing Field International Airport, Seattle-Tacoma Intl, Kenmore Air Harbor SPB).

Seattle airports

  • Boeing Field International Airport-BFI
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  • Seattle-Tacoma Intl-SEA
    from $304
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  • Kenmore Air Harbor SPB-LKE
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Chicago airports

  • O'Hare International-ORD
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  • Midway-MDW
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  • Dupage County-DPA
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  • Chicago FSS-CHI
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  • Merrill C Meigs (closed)-CGX
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  • Pal-Waukee-PWK
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  • Chicago NAS-NOH
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Airplanes

There are flights to Chicago from Seattle by 5 airlines that use 0 aircraft brands. They range from huge modern airplanes to small-sized.

Top Domestic Destinations from Seattle

You may also consider searching for discounted plane tickets to some other popular places from Seattle within United States.

Top International Destinations from Seattle

Our state-of-the art metasearch will definitely provide you with the best airfare on international flights. We’re proud to partner with many reliable travel suppliers located outside the US what gives us an opportunity to offer the most competitive prices on far destinations.

How to book a plane ticket yourself?

How to book an air ticket yourself?
  • Fill in the search parameters — cities of departure and destination, departure and return dates and click «Find flights»
  • Select the best flight that you like. Please, check the airports of departure and arrival. Select the best fare, but pay attention to the following flight details - airports of departure and arrival, flight duration and layovers. Please use filters and sort to find the best flight.
  • Click «Buy» when you are ready — our system will redirect you to the site that sells the selected flight ticket.
  • Fill in all passenger and payment information — passport and contact information, please double check all passengers’ names and make a payment for your itinerary.
  • That's it — you will receive an email with your e-ticket usually within 10 minutes after your flight is confirmed. Please, print the e-ticket and have it with you at the airport. You would need to have only a passport and/or a required form of ID to travel. Please, check your Visa requirements if you travel outside of the United States or Canada.

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