Cheap Flights from Chicago, IL to Seattle, WA from $102

Return flight: Seattle – Chicago

On Cheapflightsplus.com you will find 6 direct and 169 connecting flights from Chicago to Seattle. You can compare airfare deals from 8 airlines and multiple travel sites from $102, book and save on cheap plane tickets and last minute offers. Also check out CHI-SEA flight schedule to find best flight time, convenient departure and arrival airports.

Find One-Way and Round-Trip Chicago to Seattle 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: $102 (one-way), $175 (round-trip).
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Full flight schedule will help you in detecting at what time planes fly from Chicago to Seattle. 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
06:00 — 08:45
06:00 — 08:45 HA6303 Hawaiian Airlines
Chicago — Seattle
4h 45m
Find flight
from$320
06:00 — 08:45
06:00 — 08:45 AS715 Alaska Airlines
Chicago — Seattle
4h 45m
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from$324
07:10 — 09:50
07:10 — 09:50 UA2038 United Airlines
Chicago — Seattle
4h 40m
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from$149
09:00 — 11:43
09:00 — 11:43 UA1620 United Airlines
Chicago — Seattle
4h 43m
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from$137
16:05 — 18:46
16:05 — 18:46 UA1755 United Airlines
Chicago — Seattle
4h 41m
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from$181
21:16 — 23:59
21:16 — 23:59 UA1001 United Airlines
Chicago — Seattle
4h 43m
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from$135
05:40 — 00:34
+1 day
05:40 — 07:30 F91483 Frontier Airlines
Chicago — Denver
14h 59m stop
22:29 — 00:34 F93405 Frontier Airlines
Denver — Seattle
20h 54m
including layover
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from$209
07:00 — 12:52
07:00 — 09:23 AS413 Alaska Airlines
Chicago — Portland
2h 32m stop
11:58 — 12:55 AS2124 Alaska Airlines
Portland — Seattle
7h 52m
including layover
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from$129
08:47 — 13:54
08:47 — 10:35 UA2131 United Airlines
Chicago — Denver
1h 15m stop
11:50 — 13:54 UA1424 United Airlines
Denver — Seattle
7h 7m
including layover
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from$230
09:20 — 18:53
09:20 — 11:45 HA7470 Hawaiian Airlines
Chicago — San Diego
3h 58m stop
15:43 — 18:53 HA6692 Hawaiian Airlines
San Diego — Seattle
11h 33m
including layover
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from$102
09:20 — 18:53
09:20 — 11:45 AS1470 Alaska Airlines
Chicago — San Diego
3h 58m stop
15:43 — 18:53 AS683 Alaska Airlines
San Diego — Seattle
11h 33m
including layover
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from$111
10:35 — 16:15
10:35 — 13:25 UA343 United Airlines
Chicago — San Francisco
35m stop
14:00 — 16:15 UA1008 United Airlines
San Francisco — Seattle
7h 40m
including layover
Find flight
from$182
10:35 — 18:25
10:35 — 13:25 UA343 United Airlines
Chicago — San Francisco
2h 45m stop
16:10 — 18:25 UA2279 United Airlines
San Francisco — Seattle
9h 50m
including layover
Find flight
from$182
12:35 — 18:59
14:44 — 16:33 F92209 Frontier Airlines
Chicago — Denver
2h 38m stop
16:08 — 18:15 F91175 Frontier Airlines
Denver — Seattle
8h 24m
including layover
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from$138
13:00 — 20:54
13:00 — 15:55 UA2746 United Airlines
Chicago — Washington D.C.
2h stop
17:55 — 20:54 UA326 United Airlines
Washington D.C. — Seattle
9h 54m
including layover
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from$182
13:05 — 20:48
13:05 — 16:10 UA1140 United Airlines
Chicago — Washington D.C.
1h 45m stop
17:55 — 20:48 UA326 United Airlines
Washington D.C. — Seattle
9h 43m
including layover
Find flight
from$224
14:05 — 18:48
14:05 — 16:41 AS325 Alaska Airlines
Chicago — Portland
49m stop
17:30 — 18:48 AS1318 Alaska Airlines
Portland — Seattle
6h 43m
including layover
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from$111
14:05 — 20:33
14:09 — 16:35 HA6293 Hawaiian Airlines
Chicago — Portland
2h 50m stop
19:45 — 20:41 HA6395 Hawaiian Airlines
Portland — Seattle
8h 28m
including layover
Find flight
from$126
15:40 — 22:30
15:40 — 18:15 UA2124 United Airlines
Chicago — Los Angeles
1h 10m stop
19:25 — 22:30 UA5655 United Airlines
Los Angeles — Seattle
8h 50m
including layover
Find flight
from$230
15:55 — 21:17
13:55 — 15:45 UA767 United Airlines
Chicago — Denver
1h 35m stop
19:10 — 21:13 UA1729 United Airlines
Denver — Seattle
7h 22m
including layover
Find flight
from$182
16:17 — 00:59
+1 day
16:17 — 19:07 UA2693 United Airlines
Chicago — San Francisco
3h 37m stop
22:44 — 00:59 UA2462 United Airlines
San Francisco — Seattle
10h 42m
including layover
Find flight
from$182
17:56 — 00:56
+1 day
17:56 — 20:55 UA2677 United Airlines
Chicago — Washington D.C.
1h 11m stop
22:06 — 00:56 UA716 United Airlines
Washington D.C. — Seattle
9h
including layover
Find flight
from$181
18:15 — 23:10
18:15 — 20:04 UA1819 United Airlines
Chicago — Denver
1h 1m stop
21:05 — 23:10 UA2651 United Airlines
Denver — Seattle
6h 55m
including layover
Find flight
from$182
18:20 — 00:59
+1 day
18:20 — 21:09 UA2179 United Airlines
Chicago — San Francisco
1h 46m stop
22:55 — 00:59 UA2400 United Airlines
San Francisco — Seattle
8h 39m
including layover
Find flight
from$173
19:18 — 08:04
+1 day
19:18 — 22:06 HA6302 Hawaiian Airlines
Chicago — San Francisco
7h 54m stop
06:00 — 08:04 HA7023 Hawaiian Airlines
San Francisco — Seattle
14h 46m
including layover
Find flight
from$183
19:18 — 10:30
+1 day
19:18 — 22:06 HA6302 Hawaiian Airlines
Chicago — San Francisco
10h 14m stop
08:20 — 10:30 HA7028 Hawaiian Airlines
San Francisco — Seattle
17h 12m
including layover
Find flight
from$186
06:40 — 16:25
+1 day
06:40 — 09:08 NK1104 Spirit Airlines
Chicago — Los Angeles
10h 12m stop
21:08 — 22:26 NK1052 Spirit Airlines
Los Angeles — Las Vegas
17h 6m stop
13:40 — 16:25 NK1681 Spirit Airlines
Las Vegas — Seattle
35h 45m
including layover
Find flight
from$168
06:40 — 16:25
+1 day
06:40 — 09:08 NK1104 Spirit Airlines
Chicago — Los Angeles
7h 42m stop
16:46 — 18:03 NK1550 Spirit Airlines
Los Angeles — Las Vegas
19h 37m stop
13:40 — 16:25 NK1681 Spirit Airlines
Las Vegas — Seattle
35h 45m
including layover
Find flight
from$168
17:49 — 16:25
+1 day
16:26 — 18:47 NK2168 Spirit Airlines
Chicago — New Orleans
59m stop
20:09 — 22:07 NK1282 Spirit Airlines
New Orleans — Las Vegas
14h 31m stop
13:40 — 16:25 NK1681 Spirit Airlines
Las Vegas — Seattle
24h 36m
including layover
Find flight
from$183
*Departure and arrival times - local. Updated on July 26, 2025

Flight Information

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

Distance between Chicago and Seattle is 2786 miles. Time difference between the cities is 2h. Airplanes depart 05:00 to 22:36 from 7 Chicago airports and arrive 05:00 to 22:36 to 3 Seattle airports. Average flight time is 4h 43m.

  • The fastest flight 4h 40m
  • Average flight time 4h 43m
  • The earliest flight 05:00
  • The latest flight 22:36
  • Distance 1732 ml

The cheapest months to travel to Seattle are november (from 102 $), june (from 121 $), september (from 126 $).

The most expensive months are december (from 181 $), august (from 138 $), october (from 137 $).

What is the lowest airfare Chicago to Seattle?

The cheapest plane ticket found by our users is $102. This airfare is for economy class on one-way HA7470 flight by Hawaiian Airlines for November 19, 2025 which leaves O'Hare International in Chicago at 09:20 am and arrives at Seattle Seattle-Tacoma Intl at 18:53.

Economy class
$102
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Business class
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First class
?
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Popular Airlines on the Route

The flight Chicago — Seattle is served by 8 regular airlines and 4 low-cost airlines. Most of the flights on this route are operated by United Airlines - 68 departures per week at the price of from $ 135 . And the most expensive tickets are offered by Alaska Airlines airline - from $ 7043.

Direct flights

There are 6 nonstop flights on the route. The fastest direct flight is UA2038 by United Airlines takes 4h 40m and the cheapest is HA7470 by Hawaiian Airlines for $135.

  • from $135
    Find
  • AS - Alaska Airlines
    from $324
    Find
  • HA - Hawaiian Airlines
    from $320
    Find
See more direct flights

Connecting Flights

There are 169 flights with layovers on the route. The fastest connecting flight is AS6834 by Alaska Airlines takes 5h 52m and the cheapest is HA7470 by Hawaiian Airlines for $102.

  • from $173
    Find
  • AS - Alaska Airlines
    from $111
    Find
  • F9 - Frontier Airlines
    from $138
    Find
  • SY - Sun Country Airlines
    from $187
    Find
  • TK - Turkish Airlines
    from $2012
    Find
  • HA - Hawaiian Airlines
    from $102
    Find
  • G4 - Allegiant Air
    from $165
    Find
  • NK - Spirit Airlines
    from $168
    Find
See more connecting flights

Airports

You can fly from Chicago to Seattle from 7 airports (O'Hare International, Midway, Dupage County, Chicago FSS, Merrill C Meigs (closed), Pal-Waukee, Chicago NAS).

Chicago airports

  • O'Hare International-ORD
    from $102
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  • Midway-MDW
    from $138
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  • Dupage County-DPA
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  • Chicago FSS-CHI
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  • Merrill C Meigs (closed)-CGX
    Find
  • Pal-Waukee-PWK
    Find
  • Chicago NAS-NOH
    Find

Seattle airports

  • Boeing Field International Airport-BFI
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  • Seattle-Tacoma Intl-SEA
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  • Kenmore Air Harbor SPB-LKE
    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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