Cheap Flights from Seattle, WA to Chicago, IL from $129

Return flight: Chicago – Seattle

On Cheapflightsplus.com you will find 6 connecting flights from Seattle to Chicago. You can compare airfare deals from 2 airlines and multiple travel sites from $129, 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.

Find One-Way and Round-Trip Seattle to Chicago Flight Deals

To find the cheapest one way airline ticket select the date with the lowest price on the calendar below and click «Find Flights». To search for round-trip flight deals click on the link «Check prices for return flights» and select the date of the return flight. Cheapest flights in November: $129 (one-way), $221 (round-trip).
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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 Arrival Flight Details Flight Duration Price
17:30 — 06:03
+1 day
17:30 — 19:58 NK1682 Spirit Airlines
Seattle — Las Vegas
4h 36m stop
00:34 — 06:03 NK1053 Spirit Airlines
Las Vegas — Chicago
10h 33m
including layover
Find flight
from$129
17:30 — 08:55
+1 day
17:30 — 19:58 NK1682 Spirit Airlines
Seattle — Las Vegas
1h 31m stop
21:29 — 05:12 NK954 Spirit Airlines
Las Vegas — Miami
1h 28m stop
06:40 — 08:55 NK1986 Spirit Airlines
Miami — Chicago
13h 25m
including layover
Find flight
from$155
17:30 — 16:11
+1 day
17:30 — 19:58 NK1682 Spirit Airlines
Seattle — Las Vegas
2h 2m stop
22:00 — 05:38 NK1661 Spirit Airlines
Las Vegas — Miami
7h 57m stop
13:35 — 16:11 NK1102 Spirit Airlines
Miami — Chicago
20h 41m
including layover
Find flight
from$167
17:30 — 15:31
+1 day
17:30 — 19:58 NK1682 Spirit Airlines
Seattle — Las Vegas
4h 54m stop
00:52 — 08:21 NK1372 Spirit Airlines
Las Vegas — Orlando
5h 2m stop
13:23 — 15:31 NK1369 Spirit Airlines
Orlando — Chicago
20h 1m
including layover
Find flight
from$189
18:28 — 17:10
+1 day
18:28 — 23:45 SY286 Sun Country Airlines
Seattle — Minneapolis
11h 21m stop
11:06 — 13:39 SY503 Sun Country Airlines
Minneapolis — Dallas
1h 17m stop
14:56 — 17:10 NK1634 Spirit Airlines
Dallas — Chicago
20h 42m
including layover
Find flight
from$462
18:28 — 15:31
+1 day
17:57 — 23:17 SY286 Sun Country Airlines
Seattle — Minneapolis
7h 33m stop
07:18 — 11:31 SY341 Sun Country Airlines
Minneapolis — Orlando
1h 52m stop
13:23 — 15:31 NK1369 Spirit Airlines
Orlando — Chicago
19h 3m
including layover
Find flight
from$476
*Departure and arrival times - local. Updated on July 25, 2025

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 17:30 to 18:28 from 3 Seattle airports and arrive 17:30 to 18:28 to 7 Chicago airports. Average flight time is 19h 32m.

  • The fastest flight 10h 33m
  • Average flight time 19h 32m
  • The earliest flight 17:30
  • The latest flight 18:28
  • Distance 1732 ml

The cheapest months to travel to Chicago are august (from 129 $), july (from 130 $).

What is the lowest airfare Seattle to Chicago?

The cheapest plane ticket found by our users is $129. This airfare is for economy class on one-way NK1682 flight by Spirit Airlines for August 7, 2025 which leaves Seattle-Tacoma Intl in Seattle at 17:30 am and arrives at Chicago O'Hare International at 06:03.

Economy class
$129
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Business class
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First class
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Popular Airlines on the Route

The flight Seattle — Chicago is served by 2 regular airlines and 2 low-cost airlines. Most of the flights on this route are operated by Sun Country Airlines - 2 departures per week at the price of from $ 462 . And the most expensive tickets are offered by Sun Country Airlines airline - from $ 476.

Direct flights

There’re no direct flights on this route. Try flights with stops.

Connecting Flights

There are 6 flights with layovers on the route. The fastest connecting flight is NK1682 by Spirit Airlines takes 10h 33m and the cheapest is NK1682 by Spirit Airlines for $129.

  • SY - Sun Country Airlines
    from $462
    Find
  • NK - Spirit Airlines
    from $129
    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
    Find
  • Seattle-Tacoma Intl-SEA
    from $129
    Find
  • Kenmore Air Harbor SPB-LKE
    Find

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
    Find

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.

    To find a plane ticket, please select dates.

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