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Cheap flights from Chicago to Seattle from £67

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago to Seattle departing on 8/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Chicago to Seattle

Cheap return flights

These are some of the best return flight deals from Chicago to Seattle that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from Chicago to Seattle.

Cheap last-minute flights

Planning a quick getaway from Chicago to Seattle? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to Seattle, so you can enjoy a seamless trip without stopovers.

Cheap bus & train deals from Chicago to Seattle

Find recent round-trip train or bus tickets from Chicago to Seattle.

All round-trip flight deals to Seattle

The cheapest plane tickets to Seattle found on KAYAK recently.
07:40 - 10:31ORD-SEA
4h 51mdirect
17:45 - 23:44SEA-ORD
3h 59mdirect
£133Delta
Find Deal
Tue, 18 Mar - Wed, 19 Mar
18:45 - 21:47ORD-SEA
5h 02mdirect
17:59 - 23:59SEA-ORD
4h 00mdirect
£141Delta
Find Deal
Wed, 11 Dec - Fri, 13 Dec
06:00 - 08:44ORD-SEA
4h 44mdirect
22:36 - 04:40SEA-ORD
4h 04mdirect
£141Alaska Airlines
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Tue, 24 Dec - Tue, 31 Dec
06:32 - 09:20ORD-SEA
4h 48mdirect
17:51 - 23:47SEA-ORD
3h 56mdirect
£144Alaska Airlines
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Thu, 12 Dec - Sat, 14 Dec
07:15 - 14:00ORD-SEA
8h 45m1 stop
07:00 - 13:04SEA-ORD
4h 04mdirect
£163United Airlines
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Mon, 10 Feb - Thu, 13 Feb
19:55 - 22:46ORD-SEA
4h 51mdirect
23:55 - 05:52SEA-ORD
3h 57mdirect
£171United Airlines
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Wed, 11 Dec - Thu, 12 Dec
13:45 - 22:40ORD-SEA
10h 55m2 stops
10:00 - 23:05SEA-ORD
11h 05m2 stops
£219Southwest
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Wed, 15 Jan - Sun, 19 Jan
10:00 - 17:29ORD-SEA
9h 29m1 stop
23:59 - 17:38SEA-ORD
15h 39m1 stop
£245Sun Country Air
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Tue, 24 Dec - Mon, 30 Dec
11:47 - 22:43ORD-SEA
12h 56m1 stop
23:59 - 18:38SEA-ORD
16h 39m1 stop
£249Sun Country Air
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Thu, 19 Dec - Sun, 29 Dec
12:15 - 22:00ORD-SEA
11h 45m2 stops
05:20 - 18:30SEA-ORD
11h 10m1 stop
£253Southwest
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Fri, 28 Feb - Sat, 1 Mar
14:10 - 16:56ORD-SEA
4h 46mdirect
£67Delta
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Wed, 8 Jan
19:55 - 22:46ORD-SEA
4h 51mdirect
£74United Airlines
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Thu, 12 Dec
06:00 - 08:44ORD-SEA
4h 44mdirect
£75Alaska Airlines
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Thu, 28 Nov
08:45 - 15:52ORD-SEA
9h 07m1 stop
£78United Airlines
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Tue, 25 Feb
07:00 - 12:58ORD-SEA
7h 58m1 stop
£82Alaska Airlines
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Thu, 28 Nov
07:15 - 14:00ORD-SEA
8h 45m1 stop
£85United Airlines
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Wed, 8 Jan
11:33 - 17:02ORD-SEA
7h 29m1 stop
£109Sun Country Air
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Tue, 17 Dec
10:00 - 17:22ORD-SEA
9h 22m1 stop
£137Sun Country Air
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Wed, 25 Dec
12:15 - 22:00ORD-SEA
11h 45m2 stops
£141Southwest
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Thu, 27 Feb
05:45 - 15:50ORD-SEA
12h 05m2 stops
£144Southwest
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Fri, 14 Feb
06:00 - 08:19ORD-SEA
28h 19m1 stop
14:24 - 04:35SEA-ORD
12h 11m1 stop
Mon, 25 Nov - Fri, 29 Nov
08:00 - 10:40ORD-SEA
4h 40mdirect
12:11 - 18:18SEA-ORD
4h 07mdirect
£339Alaska Airlines
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Mon, 25 Nov - Fri, 6 Dec
07:00 - 12:58ORD-SEA
7h 58m1 stop
23:22 - 05:19SEA-ORD
3h 57mdirect
£346Alaska Airlines
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Mon, 25 Nov - Fri, 6 Dec
08:00 - 10:40ORD-SEA
4h 40mdirect
23:59 - 05:56SEA-ORD
3h 57mdirect
£354Alaska Airlines
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Mon, 25 Nov - Thu, 5 Dec
20:16 - 09:15ORD-SEA
14h 59m1 stop
07:00 - 17:28SEA-ORD
8h 28m1 stop
£379Sun Country Air
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Thu, 21 Nov - Sun, 24 Nov
08:25 - 14:45ORD-SEA
8h 20m1 stop
11:45 - 17:47SEA-ORD
4h 02mdirect
£385Delta
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Sun, 24 Nov - Thu, 28 Nov
16:48 - 08:19ORD-SEA
17h 31m1 stop
11:58 - 18:12SEA-ORD
4h 14mdirect
Mon, 25 Nov - Fri, 29 Nov
14:15 - 16:59ORD-SEA
4h 44mdirect
11:45 - 17:47SEA-ORD
4h 02mdirect
£409Delta
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Mon, 25 Nov - Thu, 28 Nov
19:10 - 00:25ORD-SEA
7h 15m1 stop
05:00 - 14:15SEA-ORD
7h 15m1 stop
£448Southwest
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Mon, 25 Nov - Thu, 28 Nov
07:00 - 16:20ORD-SEA
11h 20m2 stops
05:00 - 14:15SEA-ORD
7h 15m1 stop
£499Southwest
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Thu, 21 Nov - Thu, 28 Nov
07:40 - 10:31ORD-SEA
4h 51mdirect
17:45 - 23:44SEA-ORD
3h 59mdirect
£133Delta
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Tue, 18 Mar - Wed, 19 Mar
18:45 - 21:47ORD-SEA
5h 02mdirect
17:59 - 23:59SEA-ORD
4h 00mdirect
£141Delta
Find Deal
Wed, 11 Dec - Fri, 13 Dec
06:00 - 08:44ORD-SEA
4h 44mdirect
22:36 - 04:40SEA-ORD
4h 04mdirect
£141Alaska Airlines
Find Deal
Tue, 24 Dec - Tue, 31 Dec
07:00 - 09:58ORD-SEA
4h 58mdirect
17:55 - 23:56SEA-ORD
4h 01mdirect
£142Delta
Find Deal
Thu, 9 Jan - Wed, 15 Jan
06:32 - 09:20ORD-SEA
4h 48mdirect
17:51 - 23:47SEA-ORD
3h 56mdirect
£144Alaska Airlines
Find Deal
Thu, 12 Dec - Sat, 14 Dec
07:00 - 09:58ORD-SEA
4h 58mdirect
17:55 - 23:56SEA-ORD
4h 01mdirect
£148Delta
Find Deal
Thu, 23 Jan - Thu, 30 Jan
06:00 - 08:44ORD-SEA
4h 44mdirect
22:36 - 04:40SEA-ORD
4h 04mdirect
£148Alaska Airlines
Find Deal
Tue, 24 Dec - Fri, 3 Jan
19:55 - 22:46ORD-SEA
4h 51mdirect
23:55 - 05:52SEA-ORD
3h 57mdirect
£171United Airlines
Find Deal
Wed, 11 Dec - Thu, 12 Dec
16:05 - 18:45ORD-SEA
4h 40mdirect
23:59 - 05:53SEA-ORD
3h 54mdirect
£176United Airlines
Find Deal
Fri, 14 Feb - Mon, 17 Feb
09:55 - 12:44ORD-SEA
4h 49mdirect
00:15 - 06:17SEA-ORD
4h 02mdirect
£439American Airlines
Find Deal
Thu, 5 Dec - Thu, 5 Dec

Delta flights from Chicago to Seattle

Our best Delta deals on Chicago to Seattle flight tickets
Delta
18 Mar
ORD07:40Chicago O'Hare Intl
4h 51m
SEA10:31Seattle/Tacoma Intl
19 Mar
SEA17:45Seattle/Tacoma Intl
3h 59m
ORD23:44Chicago O'Hare Intl
Delta
11 Dec
ORD18:45Chicago O'Hare Intl
5h 02m
SEA21:47Seattle/Tacoma Intl
13 Dec
SEA17:59Seattle/Tacoma Intl
4h 00m
ORD23:59Chicago O'Hare Intl
Delta
9 Jan
ORD07:00Chicago O'Hare Intl
4h 58m
SEA09:58Seattle/Tacoma Intl
15 Jan
SEA17:55Seattle/Tacoma Intl
4h 01m
ORD23:56Chicago O'Hare Intl

Alaska Airlines flights from Chicago to Seattle

Our best Alaska Airlines deals on Chicago to Seattle flight tickets
Alaska Airlines
24 Dec
ORD06:00Chicago O'Hare Intl
4h 44m
SEA08:44Seattle/Tacoma Intl
31 Dec
SEA22:36Seattle/Tacoma Intl
4h 04m
ORD04:40Chicago O'Hare Intl
Alaska Airlines
12 Dec
ORD06:32Chicago O'Hare Intl
4h 48m
SEA09:20Seattle/Tacoma Intl
14 Dec
SEA17:51Seattle/Tacoma Intl
3h 56m
ORD23:47Chicago O'Hare Intl
Alaska Airlines
24 Dec
ORD06:00Chicago O'Hare Intl
4h 44m
SEA08:44Seattle/Tacoma Intl
1 Jan
SEA20:45Seattle/Tacoma Intl
6h 45m
1 stop
ORD05:30Chicago O'Hare Intl

See travel insights to Seattle from

How to get the cheapest flight ticket from Chicago to Seattle

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly from Chicago to Seattle?

January. The cheapest time of year to fly to Seattle from Chicago is January. The most expensive is July.

What is the cheapest day to depart Chicago for Seattle?

Monday. The cheapest day of the week is usually Monday. The most expensive is usually Monday.

When is the cheapest time to fly from Chicago to Seattle?

In the afternoon. Chicago to Seattle flights are approximately 2% more expensive in the morning than in the afternoon

What is the cheapest Chicago to Seattle flight route?

Chicago O'Hare Intl - Seattle/Tacoma Intl. Fly from Chicago O'Hare Intl to Seattle/Tacoma Intl for the best Chicago - Seattle flight prices

How far in advance should you book Chicago to Seattle flights?

29 days before. The cheapest time to buy a flight from Chicago to Seattle is approximately 29 days to departure

Can stopping save me money on Chicago to Seattle flights?

No. A direct flight is the cheapest option for a flight between Chicago to Seattle.

How have Chicago to Seattle flight prices changed over time?

As of November 2024, prices for Chicago to Seattle flights are approximately 22% more expensive when compared to flights at the same time last year.

What is the typical price of a round-trip flight between Chicago and Seattle?


When to book flights from Chicago to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from Chicago to Seattle according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Chicago to Seattle (CHI to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago to Seattle

Best price found

£67

Fastest flight time

4h 35m

Direct flights

Every day

Airports in Seattle

1 airport
The best one-way flight to Seattle from Chicago in the past 72 hours is £67. The best return flight deal from Chicago to Seattle found on momondo in the last 72 hours is £133.
The fastest flight from Chicago to Seattle takes 4h 35m
Direct flights go from Chicago to Seattle every day.
There is 1 airport near Seattle: Seattle/Tacoma Intl (SEA)

  • How far is Chicago to Seattle/Tacoma Intl by plane?

    The straight-line distance from Chicago to Seattle/Tacoma Intl is 1732.3 mi. By plane, this route typically takes 4h 40m.

  • When did momondo last update prices for flights from Chicago to Seattle/Tacoma Intl Airport?

    Prices for flights from Chicago to Seattle/Tacoma Intl Airport refresh daily.

  • How old do you have to be to fly from Chicago to Seattle/Tacoma Intl Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chicago to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The travel and health documents required for your trip to Seattle/Tacoma Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Seattle/Tacoma Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from Chicago to Seattle?


Why use momondo?

Why should I use momondo to find a flight deal from Chicago to Seattle?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Chicago to Seattle for you.

Can I find flights from Chicago to Seattle with flexible booking policies on momondo?

Yes. All flights to Seattle from Chicago on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Chicago to Seattle?

Once you have performed a search for Chicago to Seattle flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Chicago to Seattle right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Chicago to Seattle flights. All you need is a valid email address and we will do the rest; it is that quick and easy.


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