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Cheap flights from Chicago to Seattle from $53

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 2/12. 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 round-trip flights

These are some of the best round-trip 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 layovers.

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.
7:15 am - 3:35 pmMDW-SEA
10h 20m1 stop
3:15 pm - 12:17 amSEA-MDW
7h 02m1 stop
$108Frontier
Find Deal
Thu, Jan 16 - Mon, Jan 27
12:43 pm - 8:50 amMDW-SEA
22h 07m1 stop
3:15 pm - 12:17 amSEA-MDW
7h 02m1 stop
$118Frontier
Find Deal
Thu, Jan 30 - Mon, Feb 3
7:55 pm - 10:29 pmORD-SEA
4h 34mnonstop
5:37 pm - 11:35 pmSEA-ORD
3h 58mnonstop
$169United Airlines
Find Deal
Tue, May 6 - Sat, May 10
9:55 am - 12:42 pmORD-SEA
4h 47mnonstop
1:35 pm - 7:40 pmSEA-ORD
4h 05mnonstop
$178American Airlines
Find Deal
Fri, Jan 10 - Wed, Jan 15
9:55 am - 12:42 pmORD-SEA
4h 47mnonstop
1:35 pm - 7:40 pmSEA-ORD
4h 05mnonstop
$182American Airlines
Find Deal
Fri, Jan 10 - Wed, Jan 15
7:15 am - 10:11 amORD-SEA
4h 56mnonstop
6:10 pm - 12:11 amSEA-ORD
4h 01mnonstop
$187Delta
Find Deal
Mon, Jan 20 - Mon, Jan 27
6:55 pm - 9:46 pmORD-SEA
4h 51mnonstop
8:59 pm - 1:07 pmSEA-ORD
14h 08m1 stop
$188Alaska Airlines
Find Deal
Sat, Jan 18 - Sat, Jan 25
7:45 am - 10:36 amORD-SEA
4h 51mnonstop
10:51 pm - 1:07 pmSEA-ORD
12h 16m1 stop
$192Alaska Airlines
Find Deal
Wed, Jan 29 - Tue, Feb 4
7:55 pm - 10:46 pmORD-SEA
4h 51mnonstop
7:00 am - 1:07 pmSEA-ORD
4h 07mnonstop
$213United Airlines
Find Deal
Thu, Dec 12 - Tue, Dec 31
2:10 pm - 4:58 pmORD-SEA
4h 48mnonstop
5:59 pm - 11:59 pmSEA-ORD
4h 00mnonstop
$229Delta
Find Deal
Tue, Dec 10 - Wed, Dec 11
7:05 am - 12:36 pmMDW-SEA
7h 31m1 stop
$53Frontier
Find Deal
Wed, Feb 12
6:50 am - 12:36 pmORD-SEA
7h 46m1 stop
$53Frontier
Find Deal
Wed, Feb 12
1:30 pm - 4:16 pmORD-SEA
4h 46mnonstop
$85United Airlines
Find Deal
Tue, Jan 28
2:07 pm - 4:55 pmORD-SEA
4h 48mnonstop
$91Alaska Airlines
Find Deal
Mon, Jan 27
8:04 pm - 10:53 pmORD-SEA
4h 49mnonstop
$94United Airlines
Find Deal
Mon, Jan 27
8:25 pm - 11:08 pmORD-SEA
4h 43mnonstop
$105American Airlines
Find Deal
Sat, Mar 8
7:00 pm - 9:35 amORD-SEA
16h 35m1 stop
$109Alaska Airlines
Find Deal
Fri, Mar 7
6:45 pm - 9:47 pmORD-SEA
5h 02mnonstop
$113Delta
Find Deal
Thu, Dec 12
6:05 am - 8:55 amORD-SEA
4h 50mnonstop
$149Delta
Find Deal
Mon, Dec 16
8:20 pm - 10:58 pmORD-SEA
4h 38mnonstop
$189American Airlines
Find Deal
Mon, May 26
6:05 am - 5:45 pmORD-SEA
13h 40m1 stop
5:15 am - 5:28 pmSEA-ORD
10h 13m1 stop
Mon, Dec 2 - Wed, Dec 4
6:05 am - 5:45 pmORD-SEA
13h 40m1 stop
5:15 am - 5:28 pmSEA-ORD
10h 13m1 stop
Mon, Dec 2 - Thu, Dec 5
7:00 pm - 12:15 amORD-SEA
7h 15m1 stop
6:15 am - 12:17 pmSEA-ORD
4h 02mnonstop
$504Delta
Find Deal
Sat, Nov 30 - Sat, Dec 14
6:00 am - 1:10 pmORD-SEA
9h 10m1 stop
12:25 am - 6:29 amSEA-ORD
4h 04mnonstop
$538American Airlines
Find Deal
Fri, Nov 29 - Mon, Dec 2
8:00 am - 10:40 amORD-SEA
4h 40mnonstop
12:11 pm - 6:18 pmSEA-ORD
4h 07mnonstop
$548Alaska Airlines
Find Deal
Thu, Nov 28 - Wed, Dec 4
8:05 am - 2:55 pmORD-SEA
8h 50m1 stop
12:35 am - 6:36 amSEA-ORD
4h 01mnonstop
$558American Airlines
Find Deal
Thu, Nov 28 - Tue, Dec 3
11:59 pm - 2:45 amORD-SEA
4h 46mnonstop
11:55 pm - 5:52 amSEA-ORD
3h 57mnonstop
$573United Airlines
Find Deal
Sat, Nov 30 - Sat, Dec 14
8:00 am - 10:40 amORD-SEA
4h 40mnonstop
5:51 pm - 11:47 pmSEA-ORD
3h 56mnonstop
$603Alaska Airlines
Find Deal
Thu, Nov 28 - Tue, Dec 3
3:30 pm - 9:00 pmORD-SEA
7h 30m1 stop
5:59 pm - 11:58 pmSEA-ORD
3h 59mnonstop
$623Delta
Find Deal
Fri, Nov 29 - Tue, Dec 3
11:59 pm - 2:43 amORD-SEA
4h 44mnonstop
6:25 am - 4:53 pmSEA-ORD
8h 28m1 stop
$634United Airlines
Find Deal
Sun, Dec 1 - Tue, Dec 3
7:55 pm - 10:29 pmORD-SEA
4h 34mnonstop
5:37 pm - 11:35 pmSEA-ORD
3h 58mnonstop
$169United Airlines
Find Deal
Tue, May 6 - Sat, May 10
3:00 pm - 5:30 pmMDW-SEA
4h 30mnonstop
10:10 am - 4:15 pmSEA-MDW
4h 05mnonstop
$170Southwest
Find Deal
Sat, Jan 11 - Sat, Jan 18
9:55 am - 12:42 pmORD-SEA
4h 47mnonstop
1:35 pm - 7:40 pmSEA-ORD
4h 05mnonstop
$178American Airlines
Find Deal
Fri, Jan 10 - Wed, Jan 15
6:55 pm - 9:46 pmORD-SEA
4h 51mnonstop
11:45 am - 5:59 pmSEA-ORD
4h 14mnonstop
$179Alaska Airlines
Find Deal
Sat, Jan 18 - Sat, Jan 25
9:15 am - 11:50 amMDW-SEA
4h 35mnonstop
10:40 am - 4:40 pmSEA-MDW
4h 00mnonstop
$179Southwest
Find Deal
Wed, Jan 8 - Thu, Jan 9
9:55 am - 12:42 pmORD-SEA
4h 47mnonstop
1:35 pm - 7:40 pmSEA-ORD
4h 05mnonstop
$182American Airlines
Find Deal
Fri, Jan 10 - Wed, Jan 15
3:55 pm - 6:41 pmORD-SEA
4h 46mnonstop
7:00 am - 1:07 pmSEA-ORD
4h 07mnonstop
$183United Airlines
Find Deal
Tue, Dec 24 - Tue, Dec 31
6:55 pm - 9:46 pmORD-SEA
4h 51mnonstop
11:45 am - 5:59 pmSEA-ORD
4h 14mnonstop
$185Alaska Airlines
Find Deal
Sat, Jan 18 - Sat, Jan 25
7:15 am - 10:11 amORD-SEA
4h 56mnonstop
6:10 pm - 12:11 amSEA-ORD
4h 01mnonstop
$187Delta
Find Deal
Mon, Jan 20 - Mon, Jan 27
7:15 am - 10:11 amORD-SEA
4h 56mnonstop
7:25 am - 1:30 pmSEA-ORD
4h 05mnonstop
$217Delta
Find Deal
Mon, Feb 3 - Sun, Feb 9

Frontier flights from Chicago to Seattle

Our best Frontier deals on Chicago to Seattle flight tickets
Frontier
Jan 16
MDW7:15 amChicago Midway
10h 20m
1 stop
SEA3:35 pmSeattle/Tacoma Intl
Jan 27
SEA3:15 pmSeattle/Tacoma Intl
7h 02m
1 stop
MDW12:17 amChicago Midway
Frontier
Jan 30
MDW12:43 pmChicago Midway
22h 07m
1 stop
SEA8:50 amSeattle/Tacoma Intl
Feb 3
SEA3:15 pmSeattle/Tacoma Intl
7h 02m
1 stop
MDW12:17 amChicago Midway
Frontier
Jan 13
MDW7:15 amChicago Midway
9h 04m
1 stop
SEA2:19 pmSeattle/Tacoma Intl
Jan 17
SEA3:15 pmSeattle/Tacoma Intl
7h 02m
1 stop
MDW12:17 amChicago Midway

Southwest flights from Chicago to Seattle

Our best Southwest deals on Chicago to Seattle flight tickets
Southwest
Jan 11
MDW3:00 pmChicago Midway
4h 30m
SEA5:30 pmSeattle/Tacoma Intl
Jan 18
SEA10:10 amSeattle/Tacoma Intl
4h 05m
MDW4:15 pmChicago Midway
Southwest
Jan 8
MDW9:15 amChicago Midway
4h 35m
SEA11:50 amSeattle/Tacoma Intl
Jan 9
SEA10:40 amSeattle/Tacoma Intl
4h 00m
MDW4:40 pmChicago Midway
Southwest
Jan 30
MDW9:15 amChicago Midway
4h 35m
SEA11:50 amSeattle/Tacoma Intl
Feb 3
SEA10:40 amSeattle/Tacoma Intl
4h 00m
MDW4:40 pmChicago Midway

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

What is the cheapest month to fly to Seattle?

In general, January is the cheapest month to fly from Chicago to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $180. If you don’t want to visit Seattle in January, then you should wait until February to fly from Chicago, when ticket prices are also cheap, with an average price of $197.

What is the cheapest day to depart on your flight to Seattle?

On average, the least expensive day to fly to Seattle from Chicago is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $263. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday is the most expensive day to depart from Chicago because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $348.

What is the cheapest time of day to depart on your flight to Seattle?

Flying to Seattle from Chicago in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $289 when looking at flights departing in the afternoon. Flights to Seattle are more costly at noon, with an average ticket price of $307. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Chicago to Seattle/Tacoma Intl flight route?

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

How far in advance should I book a flight to Seattle?

You are more likely to see cheaper flights to Seattle from Chicago when booking 29 days ahead of your departure date. In general, you can expect to find flights to Seattle for around $273 when searching 29 days out. Keep in mind that you might be able to find cheaper flights to Seattle at any time. In fact, our users found flights for as low as $205 in the past 72 hours.

What cabin class options are available on Chicago to Seattle/Tacoma Intl flights?

There are 4 cabin classes available to choose from on Chicago to Seattle/Tacoma Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Chicago to Seattle flights?

You could potentially save up to 37% on your flight if you consider stops on a Chicago to Seattle flight.

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.

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 round-trip 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

$53

Fastest flight time

4h 25m

Direct flights

Every day

Airports in Seattle

1 airport
The best one-way flight to Seattle from Chicago in the past 72 hours is $53. The best round-trip flight deal from Chicago to Seattle found on momondo in the last 72 hours is $108.
The fastest flight from Chicago to Seattle takes 4h 25m
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 30m.

  • 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 many operators does momondo search for flights from Chicago to Seattle/Tacoma Intl Airport?

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to 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 you'll need for your trip to Seattle/Tacoma Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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

  • What is the most popular airline from Chicago to Seattle?


Best airlines flying from Chicago to Seattle

Compare and see reviews for airlines that fly from Chicago to Seattle with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $108Free CancellationRating
8.0
8,730 reviews
Search Delta flights
Alaska AirlinesPriceFrom $113Free CancellationRating
8.0
9,481 reviews
Search Alaska Airlines flights
FrontierPriceFrom $118Free CancellationRating
6.1
3,523 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $125Free CancellationRating
6.3
8,172 reviews
Search Spirit Airlines flights
United AirlinesPriceFrom $143Free CancellationRating
7.4
9,146 reviews
Search United Airlines flights
American AirlinesPriceFrom $150Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $203Free CancellationRating
8.1
4,979 reviews
Search Southwest flights
  • Southwest Flights From Chicago to Seattle

    Southwest flies from Chicago to Seattle around 3 times per week, with 4,979 momondo users rating the airline 8.1/10. The cheapest Southwest deal from Chicago to Seattle in the last 72 hours was $203 (round-trip), much lower than the average airfare cost of $377 for Southwest flights on this route.

  • Delta Flights From Chicago to Seattle

    Another popular option for Chicago to Seattle flights is Delta (8.0/10, 8,730 ratings). Delta flies from Chicago to Seattle around 15 times per week, with deals starting from $108 round-trip and rising to an average price of around $407.


Why use momondo?

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

It is quick and easy to find Chicago to Seattle flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Seattle that suits you.

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

Yes. momondo enables you to select and highlight flights to Seattle from Chicago with this policy.

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

Once all potential Chicago to Seattle flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Yes. momondo can track prices for Chicago to Seattle flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.


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