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Cheap flights from Chicago to Seattle from $75

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 8/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags
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Wed 5/29
Wed 6/5

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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 six months. All fares were found on momondo this week. Browse the quickest and cheapest flights from Chicago to Seattle by changing tabs
Delta
Sep 17
ORD6:50 pmChicago O'Hare Intl
4h 47m
SEA9:37 pmSeattle/Tacoma Intl
Sep 24
SEA6:00 pmSeattle/Tacoma Intl
3h 58m
ORD11:58 pmChicago O'Hare Intl
American Airlines
Sep 18
ORD8:20 amChicago O'Hare Intl
4h 33m
SEA10:53 amSeattle/Tacoma Intl
Sep 24
SEA11:50 pmSeattle/Tacoma Intl
4h 00m
ORD5:50 amChicago O'Hare Intl
United Airlines
Aug 14
ORD6:30 pmChicago O'Hare Intl
4h 39m
SEA9:09 pmSeattle/Tacoma Intl
Aug 21
SEA12:55 pmSeattle/Tacoma Intl
9h 45m
1 stop
ORD12:40 amChicago O'Hare Intl
Multiple Airlines
Jul 1
ORD8:42 pmChicago O'Hare Intl
16h 26m
1 stop
SEA11:08 amSeattle/Tacoma Intl
Jul 9
SEA5:40 pmSeattle/Tacoma Intl
3h 59m
ORD11:39 pmChicago O'Hare Intl
Frontier
Aug 14
MDW11:32 amChicago Midway
9h 53m
1 stop
SEA7:25 pmSeattle/Tacoma Intl
Aug 21
SEA7:51 pmSeattle/Tacoma Intl
8h 42m
1 stop
MDW6:33 amChicago Midway
Alaska Airlines
Aug 7
ORD5:50 pmChicago O'Hare Intl
4h 38m
SEA8:28 pmSeattle/Tacoma Intl
Aug 13
SEA7:59 pmSeattle/Tacoma Intl
8h 21m
1 stop
ORD6:20 amChicago O'Hare Intl

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 Alaska Airlines, Spirit Airlines and Sun Country Air
Alaska Airlines
Aug 21
ORD6:00 amChicago O'Hare Intl
4h 34m
SEA8:34 amSeattle/Tacoma Intl
Spirit Airlines
Aug 27
ORD10:57 pmChicago O'Hare Intl
19h 11m
1 stop
SEA4:08 pmSeattle/Tacoma Intl
Sun Country Air
Jun 14
ORD8:05 pmChicago O'Hare Intl
14h 57m
1 stop
SEA9:02 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
Frontier
May 29
MDW9:10 pmChicago Midway
27h 02m
1 stop
SEA10:12 pmSeattle/Tacoma Intl
Jun 1
SEA10:22 amSeattle/Tacoma Intl
8h 44m
1 stop
MDW9:06 pmChicago Midway
Multiple Airlines
Jun 2
ORD7:59 pmChicago O'Hare Intl
25h 11m
1 stop
SEA7:10 pmSeattle/Tacoma Intl
Jun 11
SEA9:41 pmSeattle/Tacoma Intl
6h 55m
1 stop
ORD6:36 amChicago O'Hare Intl
Sun Country Air
May 31
ORD8:30 pmChicago O'Hare Intl
13h 30m
1 stop
SEA8:00 amSeattle/Tacoma Intl
Jun 2
SEA11:59 pmSeattle/Tacoma Intl
15h 19m
1 stop
ORD5:18 pmChicago O'Hare Intl
Spirit Airlines
May 30
ORD5:36 pmChicago O'Hare Intl
17h 09m
2 stops
SEA8:45 amSeattle/Tacoma Intl
Jun 4
SEA9:40 pmSeattle/Tacoma Intl
30h 20m
3 stops
ORD6:00 amChicago O'Hare Intl
Alaska Airlines
Jun 2
ORD6:15 amChicago O'Hare Intl
4h 28m
SEA8:43 amSeattle/Tacoma Intl
Jun 9
SEA11:34 pmSeattle/Tacoma Intl
4h 06m
ORD5:40 amChicago O'Hare Intl
Delta
Jun 2
ORD6:00 amChicago O'Hare Intl
4h 28m
SEA8:28 amSeattle/Tacoma Intl
Jun 12
SEA6:00 pmSeattle/Tacoma Intl
3h 58m
ORD11:58 pmChicago O'Hare Intl

Frontier flights from Chicago to Seattle

Our best Frontier deals on Chicago to Seattle flight tickets
Frontier
Aug 14
MDW11:32 amChicago Midway
9h 53m
1 stop
SEA7:25 pmSeattle/Tacoma Intl
Aug 21
SEA7:51 pmSeattle/Tacoma Intl
8h 42m
1 stop
MDW6:33 amChicago Midway
Frontier
Aug 14
MDW11:32 amChicago Midway
9h 53m
1 stop
SEA7:25 pmSeattle/Tacoma Intl
Aug 24
SEA7:51 pmSeattle/Tacoma Intl
8h 42m
1 stop
MDW6:33 amChicago Midway
Frontier
Sep 3
MDW11:32 amChicago Midway
11h 25m
1 stop
SEA8:57 pmSeattle/Tacoma Intl
Sep 7
SEA10:05 pmSeattle/Tacoma Intl
10h 37m
1 stop
MDW10:42 amChicago Midway

Delta flights from Chicago to Seattle

Our best Delta deals on Chicago to Seattle flight tickets
Delta
Sep 17
ORD6:50 pmChicago O'Hare Intl
4h 47m
SEA9:37 pmSeattle/Tacoma Intl
Sep 24
SEA6:00 pmSeattle/Tacoma Intl
3h 58m
ORD11:58 pmChicago O'Hare Intl
Delta
Sep 9
ORD6:50 pmChicago O'Hare Intl
4h 47m
SEA9:37 pmSeattle/Tacoma Intl
Sep 11
SEA6:00 pmSeattle/Tacoma Intl
3h 58m
ORD11:58 pmChicago O'Hare Intl
Delta
Jun 6
ORD7:40 pmChicago O'Hare Intl
4h 43m
SEA10:23 pmSeattle/Tacoma Intl
Jun 11
SEA6:00 pmSeattle/Tacoma Intl
3h 58m
ORD11:58 pmChicago O'Hare Intl

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. Most expensive is July

What is the cheapest day to depart Chicago for Seattle?

Tuesday. The cheapest day of the week is typically Tuesday. The most expensive is typically Sunday

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

In the afternoon. Chicago to Seattle flights are approximately 5% more expensive in the evening than in the afternoon

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

Frontier. Alaska Airlines, American Airlines, and Frontier 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?

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

How many flights depart from Chicago to Seattle on average per day?

The number of flights available between Chicago and Seattle is 22 per day as of May 2024. The most frequent departure time is 7:00PM, with 35% of daily flights leaving in the evening.

How many flights depart from Chicago to Seattle on average per week?

160 flights are operational weekly from Chicago to Seattle as of May 2024. The most popular departure day for this route is Monday, with 18% of flights per week taking off on this day.

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

There are 4 cabin classes available to choose from on Chicago to Seattle 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?

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

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

$75

Fastest flight time

4h 27m

Direct flights

Every day

Airports in Seattle

1 airport
The best one-way flight to Seattle from Chicago in the past 72 hours is $75. The best round-trip flight deal from Chicago to Seattle found on momondo in the last 72 hours is $149.
The fastest flight from Chicago to Seattle takes 4h 27m
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 27m.

  • 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.


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
Alaska AirlinesPriceFrom $84Free CancellationRating
8.0
9,175 reviews
Search Alaska Airlines flights
DeltaPriceFrom $99Free CancellationRating
8.0
10,561 reviews
Search Delta flights
American AirlinesPriceFrom $109Free CancellationRating
7.3
14,388 reviews
Search American Airlines flights
United AirlinesPriceFrom $114Free CancellationRating
7.4
10,845 reviews
Search United Airlines flights
FrontierPriceFrom $123Free CancellationRating
6.2
4,039 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $136Free CancellationRating
6.4
8,643 reviews
Search Spirit Airlines flights
  • Alaska Airlines Flights From Chicago to Seattle

    Alaska Airlines flies from Chicago to Seattle around 20 times per week, with 9,175 momondo users rating the airline 8.0/10. The cheapest Alaska Airlines deal from Chicago to Seattle in the last 72 hours was $84 (round-trip), much lower than the average airfare cost of $325 for Alaska Airlines flights on this route.

  • Delta Flights From Chicago to Seattle

    Another popular option for Chicago to Seattle flights is Delta (8.0/10, 10,561 ratings). Delta flies from Chicago to Seattle around 14 times per week, with deals starting from $99 round-trip and rising to an average price of around $464.


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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From?
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Wed 5/29
Wed 6/5
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