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Cheap flights from Chicago to Seattle from $82

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 5/22. 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
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Mon 5/13
Mon 5/20

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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
Multiple Airlines
Jun 4
ORD10:52 pmChicago O'Hare Intl
11h 40m
1 stop
SEA8:32 amSeattle/Tacoma Intl
Jun 12
SEA11:34 pmSeattle/Tacoma Intl
4h 06m
ORD5:40 amChicago O'Hare Intl
Alaska Airlines
May 29
ORD9:20 pmChicago O'Hare Intl
4h 35m
SEA11:55 pmSeattle/Tacoma Intl
Jun 5
SEA11:34 pmSeattle/Tacoma Intl
4h 06m
ORD5:40 amChicago O'Hare Intl
Frontier
May 15
ORD6:27 pmChicago O'Hare Intl
16h 03m
1 stop
SEA8:30 amSeattle/Tacoma Intl
May 22
SEA8:04 amSeattle/Tacoma Intl
15h 09m
1 stop
ORD1:13 amChicago O'Hare Intl
Spirit Airlines
Jun 4
ORD9:36 amChicago O'Hare Intl
12h 53m
1 stop
SEA8:29 pmSeattle/Tacoma Intl
Jun 4
SEA9:40 pmSeattle/Tacoma Intl
6h 56m
1 stop
ORD6:36 amChicago O'Hare Intl
American Airlines
Jun 4
ORD9:58 amChicago O'Hare Intl
4h 28m
SEA12:26 pmSeattle/Tacoma Intl
Jun 9
SEA10:52 pmSeattle/Tacoma Intl
4h 15m
ORD5:07 amChicago O'Hare Intl
Delta
Jun 6
ORD6:00 amChicago O'Hare Intl
4h 28m
SEA8:28 amSeattle/Tacoma Intl
Jun 13
SEA6:00 pmSeattle/Tacoma Intl
3h 58m
ORD11:58 pmChicago 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, Delta and Frontier
Frontier
May 22
MDW11:31 amChicago Midway
9h 54m
1 stop
SEA7:25 pmSeattle/Tacoma Intl
Spirit Airlines
Jun 4
ORD7:00 amChicago O'Hare Intl
27h 32m
2 stops
SEA8:32 amSeattle/Tacoma Intl
Alaska Airlines
Aug 6
ORD8:00 amChicago O'Hare Intl
6h 32m
1 stop
SEA12:32 pmSeattle/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 17
MDW11:31 amChicago Midway
9h 11m
1 stop
SEA6:42 pmSeattle/Tacoma Intl
May 21
SEA8:14 pmSeattle/Tacoma Intl
12h 55m
1 stop
MDW11:09 amChicago Midway
Multiple Airlines
May 18
ORD5:56 pmChicago O'Hare Intl
15h 08m
1 stop
SEA7:04 amSeattle/Tacoma Intl
Jun 4
SEA9:40 pmSeattle/Tacoma Intl
6h 56m
1 stop
ORD6:36 amChicago O'Hare Intl
Spirit Airlines
May 13
ORD7:52 pmChicago O'Hare Intl
14h 53m
1 stop
SEA8:45 amSeattle/Tacoma Intl
May 17
SEA9:40 pmSeattle/Tacoma Intl
7h 00m
1 stop
ORD6:40 amChicago O'Hare Intl
Alaska Airlines
May 17
ORD6:00 amChicago O'Hare Intl
4h 27m
SEA8:27 amSeattle/Tacoma Intl
Jun 1
SEA10:49 pmSeattle/Tacoma Intl
4h 06m
ORD4:55 amChicago O'Hare Intl
Delta
May 18
ORD6:00 amChicago O'Hare Intl
4h 27m
SEA8:27 amSeattle/Tacoma Intl
Jun 1
SEA6:00 pmSeattle/Tacoma Intl
4h 06m
ORD12:06 amChicago O'Hare Intl
Frontier
May 15
ORD6:27 pmChicago O'Hare Intl
16h 03m
1 stop
SEA8:30 amSeattle/Tacoma Intl
May 22
SEA8:04 amSeattle/Tacoma Intl
15h 09m
1 stop
ORD1:13 amChicago O'Hare Intl

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
9,141 reviews
Search Alaska Airlines flights
DeltaPriceFrom $99Free CancellationRating
8.0
10,789 reviews
Search Delta flights
American AirlinesPriceFrom $109Free CancellationRating
7.3
14,677 reviews
Search American Airlines flights
United AirlinesPriceFrom $114Free CancellationRating
7.4
11,043 reviews
Search United Airlines flights
FrontierPriceFrom $123Free CancellationRating
6.2
4,088 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $141Free CancellationRating
6.4
8,706 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 9,141 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 $326 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, 10,789 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 $467.


Alaska Airlines flights from Chicago to Seattle

Our best Alaska Airlines deals on Chicago to Seattle flight tickets
Alaska Airlines
May 29
ORD9:20 pmChicago O'Hare Intl
4h 35m
SEA11:55 pmSeattle/Tacoma Intl
Jun 5
SEA11:34 pmSeattle/Tacoma Intl
4h 06m
ORD5:40 amChicago O'Hare Intl
Alaska Airlines
Jun 8
ORD2:54 pmChicago O'Hare Intl
6h 27m
1 stop
SEA7:21 pmSeattle/Tacoma Intl
Jun 11
SEA7:45 pmSeattle/Tacoma Intl
6h 55m
1 stop
ORD4:40 amChicago O'Hare Intl
Alaska Airlines
May 21
ORD8:00 amChicago O'Hare Intl
8h 29m
1 stop
SEA2:29 pmSeattle/Tacoma Intl
Jun 1
SEA10:49 pmSeattle/Tacoma Intl
4h 06m
ORD4:55 amChicago O'Hare Intl

Frontier flights from Chicago to Seattle

Our best Frontier deals on Chicago to Seattle flight tickets
Frontier
May 17
MDW11:31 amChicago Midway
9h 11m
1 stop
SEA6:42 pmSeattle/Tacoma Intl
May 21
SEA8:14 pmSeattle/Tacoma Intl
12h 55m
1 stop
MDW11:09 amChicago Midway
Frontier
May 15
ORD6:27 pmChicago O'Hare Intl
16h 03m
1 stop
SEA8:30 amSeattle/Tacoma Intl
May 22
SEA8:04 amSeattle/Tacoma Intl
15h 09m
1 stop
ORD1:13 amChicago O'Hare Intl
Frontier
May 18
ORD5:56 pmChicago O'Hare Intl
15h 08m
1 stop
SEA7:04 amSeattle/Tacoma Intl
May 21
SEA8:14 pmSeattle/Tacoma Intl
26h 59m
1 stop
ORD1:13 amChicago 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 morning. Chicago to Seattle flights are approximately 6% more expensive in the evening than in the morning

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?

49 days before. The cheapest time to buy a flight from Chicago to Seattle is approximately 49 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 5:00PM, with 69% of daily flights leaving in the afternoon.

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?

You could potentially save up to 10% on your flight if you consider stops on a Chicago to Seattle flight.

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

$82

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 $82. The best round-trip flight deal from Chicago to Seattle found on momondo in the last 72 hours is $134.
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.


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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Mon 5/13
Mon 5/20
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