Cheap flights from Chicago to Seattle from $108

Round-trip
1 adult
Economy
From?
To?
Mon 5/30
Mon 6/6

Deals available from 900+ travel sites.

Flight information for Chicago to Seattle
(CHI to SEA)

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

Best Price Found

$108

Fastest flight time

4h 29m

Direct flights

Mon, Tue, Thu, Fri, Sat and Sun

Airports in Seattle

3 airports
The best one-way flight to Seattle from Chicago in the past 72 hours is $108. The best round-trip flight deal from Chicago to Seattle found on momondo in the last 72 hours is $215.
The fastest flight from Chicago to Seattle takes 4h 29m
Direct flights go from Chicago to Seattle on Monday, Tuesday, Thursday, Friday, Saturday and Sunday. Airlines offering direct flights are: American Airlines and Alaska Airlines.
There are 3 airports near Seattle: Seattle King County/Boeing (BFI), Seattle Lake Union Spb (LKE), Seattle/Tacoma Intl (SEA)

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?

August

The cheapest time of year to fly to Seattle from Chicago is August. Most expensive is December

What is the cheapest day to depart Chicago for Seattle?

Thursday

The cheapest day of the week is typically Thursday. The most expensive is typically Monday

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

in the afternoon

Chicago to Seattle flights are approximately 12% more expensive at noon than in the afternoon

What is the cheapest airline that flies to Seattle from Chicago?

Juneyao Airlines

Alaska Airlines, American Airlines, and Delta are the most popular carriers operating from Chicago to Seattle

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?

55 days before

The cheapest time to buy a flight from Chicago to Seattle is approximately 55 days to departure

Chicago O'Hare Intl Airport (ORD) to Seattle/Tacoma Intl Airport (SEA)$215
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Chicago Midway Airport (MDW) to Seattle/Tacoma Intl Airport (SEA)$234
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When traveling from Chicago to Seattle, the most popular airport to fly into is Seattle/Tacoma Intl Airport. The majority of travelers flying into Seattle/Tacoma Intl Airport from Chicago are departing from Chicago O'Hare Intl Airport. If you are looking for an alternate airport near Chicago O'Hare Intl Airport, Chicago Midway Airport is a great option and is located in Chicago. When traveling from Chicago, it is helpful to have an alternative airport to fly into when you land in Seattle. The nearest airport to Seattle/Tacoma Intl Airport is Seattle/Tacoma Intl Airport which is located in Seattle. The least expensive flight option from Chicago to Seattle will typically be ORD — SEA during the month of May with an average price of $215 RT.


Easily compare round-trip flights from Chicago to Seattle

Below you can see the best fares for your round-trip flight route over the next three months. All fares were found on momondo this week. Browse the quickest and cheapest flights from Chicago to Seattle by changing tabs
Multiple Airlines
Sep 9
ORD3:35 pmChicago O'Hare Intl
4h 45m
SEA8:20 pmSeattle/Tacoma Intl
Oct 1
SEA7:59 pmSeattle/Tacoma Intl
4h 08m
ORD12:07 amChicago O'Hare Intl
Delta
Sep 13
ORD3:29 pmChicago O'Hare Intl
4h 50m
SEA8:19 pmSeattle/Tacoma Intl
Sep 21
SEA1:55 pmSeattle/Tacoma Intl
3h 52m
ORD5:47 pmChicago O'Hare Intl
American Airlines
Oct 4
ORD8:07 amChicago O'Hare Intl
10h 58m
1 stop
SEA7:05 pmSeattle/Tacoma Intl
Oct 10
SEA8:04 pmSeattle/Tacoma Intl
4h 00m
ORD12:04 amChicago O'Hare Intl
United Airlines
Sep 28
ORD3:10 amChicago O'Hare Intl
10h 21m
1 stop
SEA1:31 pmSeattle/Tacoma Intl
Oct 1
SEA12:59 pmSeattle/Tacoma Intl
3h 57m
ORD4:56 pmChicago O'Hare Intl
Spirit Airlines
Aug 9
ORD5:38 pmChicago O'Hare Intl
15h 21m
1 stop
SEA8:59 amSeattle/Tacoma Intl
Aug 16
SEA8:27 amSeattle/Tacoma Intl
8h 43m
1 stop
ORD5:10 pmChicago O'Hare Intl
Frontier
Aug 17
MDW4:14 amChicago Midway
13h 01m
1 stop
SEA5:15 pmSeattle/Tacoma Intl
Aug 23
SEA5:21 amSeattle/Tacoma Intl
6h 42m
1 stop
MDW12:03 pmChicago Midway

Find the cheapest one-way flights from Chicago to Seattle

If you're looking for one-way flights from Chicago to Seattle, view some of our deals below provided by American Airlines, Delta and Spirit Airlines
Delta
Sep 13
ORD3:29 pmChicago O'Hare Intl
4h 50m
SEA8:19 pmSeattle/Tacoma Intl
United Airlines
Oct 15
ORD3:25 amChicago O'Hare Intl
4h 36m
SEA8:01 amSeattle/Tacoma Intl
Spirit Airlines
Aug 16
ORD5:38 pmChicago O'Hare Intl
15h 21m
1 stop
SEA8:59 amSeattle/Tacoma Intl

Search last-minute flights to Seattle from Chicago

Find and compare round-trip flight prices for your last-minute flight from Chicago to Seattle
Multiple Airlines
Jun 4
ORD9:54 amChicago O'Hare Intl
12h 05m
1 stop
SEA9:59 pmSeattle/Tacoma Intl
Jun 6
SEA1:45 pmSeattle/Tacoma Intl
4h 04m
ORD5:49 pmChicago O'Hare Intl
Spirit Airlines
Jun 4
ORD9:54 amChicago O'Hare Intl
12h 05m
1 stop
SEA9:59 pmSeattle/Tacoma Intl
Aug 17
SEA8:27 amSeattle/Tacoma Intl
8h 43m
1 stop
ORD5:10 pmChicago O'Hare Intl
Alaska Airlines
Jun 3
ORD9:15 amChicago O'Hare Intl
4h 30m
SEA1:45 pmSeattle/Tacoma Intl
Jun 6
SEA1:45 pmSeattle/Tacoma Intl
4h 04m
ORD5:49 pmChicago O'Hare Intl
Frontier
May 31
MDW4:14 amChicago Midway
18h 00m
1 stop
SEA10:14 pmSeattle/Tacoma Intl
Jun 4
SEA1:00 pmSeattle/Tacoma Intl
10h 59m
1 stop
MDW11:59 pmChicago Midway
Multiple Airlines
Jun 3
ORD3:36 pmChicago O'Hare Intl
22h 29m
1 stop
SEA2:05 pmSeattle/Tacoma Intl
Jun 6
SEA1:45 pmSeattle/Tacoma Intl
4h 04m
ORD5:49 pmChicago O'Hare Intl
Spirit Airlines
Jun 4
ORD9:54 amChicago O'Hare Intl
12h 05m
1 stop
SEA9:59 pmSeattle/Tacoma Intl
Aug 18
SEA2:00 amSeattle/Tacoma Intl
15h 10m
1 stop
ORD5:10 pmChicago O'Hare Intl

Best airlines flying from Chicago to Seattle

Compare and see reviews for airlines that fly from Chicago to Seattle with momondo
AirlineRatingFree CancellationPrice
Juneyao AirlinesPriceFrom $13Free CancellationRating
0.0
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Spirit AirlinesPriceFrom $74Free CancellationRating
6.2
6.4

Boarding

5.8

Comfort

6.9

Crew

4.8

Entertainment

5.1

Food

Reviews

Smooth flight, excellent service

1 / 10
Search Spirit Airlines flights
Alaska AirlinesPriceFrom $106Free CancellationRating
8.0
8.3

Boarding

8.0

Comfort

8.5

Crew

7.4

Entertainment

7.2

Food

Reviews

My husband's luggage was lost even though it was checked in at the same time as mine. It was eventually located and was shipped to a municipal airport in the area where we are heading. We have yet to be able to pick up the suit case as we will be heading to the pickup location tomorrow. ( 4 days after arrival) We had to buy some new clothes and shoes for my husband in the meantime. I think I should be reimbursed for the baggage check fee. We lost time at the airport upon arrival trying to track our luggage. We lost time and money having to purchase clothes and shoes while waiting for luggage to arrive and we will lose time having to drive 2 hours out of our way to retrieve our luggage.

1 / 10
Search Alaska Airlines flights
DeltaPriceFrom $108Free CancellationRating
7.9
7.9

Boarding

8.0

Comfort

8.3

Crew

7.7

Entertainment

7.3

Food

Reviews

This is another disease as if you have the Internet, you are ordinary deceivers!

1 / 10
Search Delta flights
United AirlinesPriceFrom $113Free CancellationRating
7.4
7.7

Boarding

7.2

Comfort

8.0

Crew

6.9

Entertainment

6.7

Food

Reviews

The beautiful young lady flight attendant from Oklahoma was exceptionally nice to everyone sitting around me.

1 / 10
Search United Airlines flights
American AirlinesPriceFrom $117Free CancellationRating
7.3
7.7

Boarding

7.2

Comfort

8.1

Crew

7.1

Entertainment

6.6

Food

Reviews

Good flight, and service. Need more food options.

1 / 10
Search American Airlines flights
  • Alaska Airlines Flights From Chicago to Seattle

    Alaska Airlines flies from Chicago to Seattle around 9 times per week, with 403 momondo users rating the airline 8.0/10. The cheapest Alaska Airlines deal from Chicago to Seattle in the last 72 hours was $106 (round-trip), much lower than the average airfare cost of $385 for Alaska Airlines flights on this route.

  • Delta Flights From Chicago to Seattle

    Another popular option for Chicago to Seattle flights is Delta (7.9/10, 385 ratings). Delta flies from Chicago to Seattle around 14 times per week, with deals starting from $108 round-trip and rising to an average price of around $371.


American Airlines flights from Chicago to Seattle

Our best American Airlines deals on Chicago to Seattle flight tickets
American Airlines
Oct 4
ORD8:07 amChicago O'Hare Intl
10h 58m
1 stop
SEA7:05 pmSeattle/Tacoma Intl
Oct 10
SEA8:04 pmSeattle/Tacoma Intl
4h 00m
ORD12:04 amChicago O'Hare Intl
American Airlines
Oct 4
ORD9:15 amChicago O'Hare Intl
9h 50m
1 stop
SEA7:05 pmSeattle/Tacoma Intl
Oct 11
SEA10:00 amSeattle/Tacoma Intl
7h 32m
1 stop
ORD5:32 pmChicago O'Hare Intl
American Airlines
Oct 11
ORD10:39 amChicago O'Hare Intl
8h 18m
1 stop
SEA6:57 pmSeattle/Tacoma Intl
Oct 18
SEA9:29 amSeattle/Tacoma Intl
7h 09m
1 stop
ORD4:38 pmChicago O'Hare Intl

United Airlines flights from Chicago to Seattle

Our best United Airlines deals on Chicago to Seattle flight tickets
United Airlines
Sep 28
ORD3:10 amChicago O'Hare Intl
10h 21m
1 stop
SEA1:31 pmSeattle/Tacoma Intl
Oct 1
SEA12:59 pmSeattle/Tacoma Intl
3h 57m
ORD4:56 pmChicago O'Hare Intl
United Airlines
Sep 20
ORD3:10 amChicago O'Hare Intl
7h 57m
1 stop
SEA11:07 amSeattle/Tacoma Intl
Sep 27
SEA2:30 amSeattle/Tacoma Intl
10h 18m
1 stop
ORD12:48 pmChicago O'Hare Intl
United Airlines
Sep 27
ORD9:07 amChicago O'Hare Intl
7h 00m
1 stop
SEA4:07 pmSeattle/Tacoma Intl
Oct 4
SEA4:40 amSeattle/Tacoma Intl
9h 09m
1 stop
ORD1:49 pmChicago O'Hare Intl

  • Are airlines flying from Chicago to Seattle/Tacoma Intl offering flexible cancellation due to COVID-19?

    To ease the stress of booking flights, some of our airline partners flying from Chicago to Seattle/Tacoma Intl are responding to the global pandemic. The following airlines may have a flexible cancellation policy to help accommodate travelers: Alaska Airlines, United Airlines, and Delta.

  • 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 32m.



Alternative routes for Chicago to Seattle

Compare alternative flights to and from nearby airports and cities to discover the best prices and most convenient flight times
St. Louis to Seattle Flights
Fastest flight time4h 20m
Cheapest price$218
Chicago to Spokane Flights
Fastest flight time3h 56m
Cheapest price$269
Bloomington, Illinois to Seattle Flights
Fastest flight time6h 47m
Cheapest price$532
St. Louis to Spokane Flights
Fastest flight time7h 06m
Cheapest price$344
Peoria, Illinois to Seattle Flights
Fastest flight time7h 11m
Cheapest price$418
Moline to Seattle Flights
Fastest flight time5h 39m
Cheapest price$314
Chicago to Bellingham Flights
Fastest flight time15h 58m
Cheapest price$427

Similar Chicago to Seattle flights

Flexible with your destination? Broaden your search and find flights similar to your Chicago to Seattle route

Why use momondo?

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.

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

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.

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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