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

346 flights are operational weekly from Chicago to Seattle as of October 2025. The most popular departure day for this route is Thu, with 17% of flights per week taking off on this day.

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

The number of flights available between Chicago and Seattle is 49 per day as of October 2025. The most frequent departure time is 5:00PM, with 52% of daily flights leaving in the afternoon.

Which layover airport has the shortest travel time from Chicago to Seattle?

Flights connecting via Phoenix (PHX) have the shortest average one-way travel time: 7h 35m.

Which airport is the most popular layover for flights between Chicago and Seattle?

Denver (DEN) was the most common stop: 81% of momondo users choosing 1-stop flights on this route connected there.

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

Frontier, Southwest, and Delta are the most popular carriers operating from Chicago to Seattle/Tacoma Intl

Which layover airport offers the lowest fares from Chicago to Seattle?

Flights via Phoenix (PHX) offer the lowest average round-trip price of $208.

What airlines fly to Seattle?

Alaska Airlines, Delta and American Airlines are the top three most popular airlines that fly to Seattle from Chicago according to our data. Alaska Airlines is the first choice among our users, with 35% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 8 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.

Which layover airport has the shortest connection time from Chicago to Seattle?

Phoenix (PHX) has the shortest average layover time for this route: 1h 43m.

Which airlines fly direct from Chicago to Seattle?

You can get a direct flight from Chicago to Seattle. There are direct flights from both O'Hare International Airport (ORD) and Midway International Airport (MDW). Delta, American Airlines, United Airlines, and Alaska Airlines are the main airlines with direct flights from ORD to Seattle. If you are flying from MDW, you will only have flights from Southwest Airlines. There are also single-layover flights from Chicago to Seattle. These flights are available from both ORD and MDW. They have layovers in many cities, the most popular being Las Vegas and Phoenix, while Orlando and Washington are other regular stops. All flights will arrive at Seattle-Tacoma International Airport (SEA). What is the best way to get in and out of airports in Chicago and Seattle? The easiest way to get to O'Hare International Airport (ORD) by public transportation is to take the Chicago Transit Authority (CTA) Blue Line train. The Blue Line runs 24 hours a day, seven days a week, and stops at O'Hare's Terminal 2 and Terminal 3. If you're coming from downtown Chicago, you can catch the Blue Line at the Clark/Lake station or any other station along the Blue Line route. You can take the CTA Orange Line train to get to Midway International Airport (MDW). The Orange Line runs between the MDW and the Loop (downtown) of Chicago. You can catch the Orange Line at any station along the route, including the Loop stations. Both airports are also served by bus routes operated by the Chicago Transit Authority (CTA) and the Pace Suburban Bus Service. The Link Light Rail is a fast and convenient option from Seattle-Tacoma International Airport (SEA) to downtown Seattle. The SeaTac/Airport Station is located in the airport terminal, and you can take the Link Light Rail from there to downtown Seattle's Westlake Station. Sound Transit Express and King County Metro buses also run from SEA to downtown Seattle, with several different routes available. What are the benefits of the different airports in Chicago and Seattle? O'Hare International Airport (ORD) is one of the busiest airports in the world, offering more direct flights to Seattle, while Midway International Airport (MDW) is a smaller airport with fewer crowds and faster security lines. ORD is generally better for travelers looking for a wider range of flight options and amenities, while MDW may be more convenient for those who live on the south side of Chicago or in the suburbs. Both airports offer various transportation options from downtown Chicago. However, MDW is closer to downtown Chicago, making it a quicker trip. Seattle-Tacoma International Airport (SEA) offers many benefits, including its central location between Seattle and Tacoma, modern facilities, and numerous transportation options. It is also known for its sustainability initiatives, including its LEED-certified terminal and use of renewable energy. SEA has various shops, restaurants, and services to make your travel experience more comfortable and convenient. Moreover, its efficient security and baggage systems help minimize wait times. Which cities can you get to from Seattle-Tacoma International Airport? Tacoma is only about 30 minutes away by car, and it's home to the Museum of Glass, which features a large collection of contemporary glass art. Olympia, the capital of Washington State, is about an hour's drive from Seattle-Tacoma International Airport (SEA) and is known for its beautiful capitol building and scenic waterfront parks. Bellingham, located about 1h 30min north of SEA, is a college town home to Western Washington University and known for its vibrant arts scene. Portland, Oregon, is about three hours away and is famous for its food, craft beer, and numerous parks and gardens, including the International Rose Test Garden. The best way to get to these towns is using a rental car from SEA.

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?

As of October 2025, there are 8 operators available to choose from 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.

$95 Cheap Flights from Chicago to Seattle in 2025/26

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5:53 pm - 8:35 pmORD-SEA

4h 42mnonstop

7:40 pm - 5:01 amSEA-ORD

7h 21m1 stop

$178Hawaiian Airlines

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Fri, Oct 31 - Sat, Nov 8

6:00 am - 12:13 pmORD-SEA

8h 13m1 stop

11:35 am - 7:28 amSEA-ORD

41h 53m2 stops

$179Multiple Airlines

Find Deal

Thu, Nov 6 - Sun, Nov 9

9:22 pm - 6:32 pmORD-SEA

23h 10m2 stops

2:22 pm - 12:15 amSEA-ORD

7h 53m1 stop

$180Multiple Airlines

Find Deal

Wed, Nov 12 - Mon, Nov 17

2:06 pm - 6:46 pmORD-SEA

6h 40m1 stop

8:30 am - 2:38 pmSEA-ORD

4h 08mnonstop

$183Alaska Airlines

Find Deal

Fri, Feb 6 - Sun, Feb 8

8:00 am - 10:44 amORD-SEA

4h 44mnonstop

7:40 pm - 5:01 amSEA-ORD

7h 21m1 stop

$184Alaska Airlines

Find Deal

Wed, Nov 12 - Sat, Nov 15

7:15 am - 2:40 pmMDW-SEA

9h 25m1 stop

6:35 am - 12:30 pmSEA-MDW

3h 55mnonstop

$187Southwest

Find Deal

Fri, Oct 31 - Sun, Nov 9

9:05 am - 11:40 amMDW-SEA

4h 35mnonstop

7:05 am - 7:10 pmSEA-MDW

10h 05m2 stops

$192Southwest

Find Deal

Fri, Oct 31 - Tue, Nov 4

7:47 am - 10:40 amORD-SEA

4h 53mnonstop

7:20 am - 1:34 pmSEA-ORD

4h 14mnonstop

$197Delta

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Wed, Nov 19 - Sun, Nov 23

6:00 am - 10:54 amORD-SEA

6h 54m1 stop

7:20 am - 1:34 pmSEA-ORD

4h 14mnonstop

$207Delta

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Thu, Nov 20 - Sun, Nov 23

7:35 am - 10:25 amORD-SEA

4h 50mnonstop

12:59 am - 6:59 amSEA-ORD

4h 00mnonstop

$211American Airlines

Find Deal

Mon, Nov 10 - Thu, Nov 13

Alaska Airlines flights from Chicago to Seattle

Our best Alaska Airlines deals on Chicago to Seattle flight tickets

Alaska Airlines

Feb 6

ORD2:06 pmChicago O'Hare Intl

6h 40m

1 stop

SEA6:46 pmSeattle/Tacoma Intl

Feb 8

SEA8:30 amSeattle/Tacoma Intl

4h 08m

ORD2:38 pmChicago O'Hare Intl

$183

Find similar

Alaska Airlines

Nov 12

ORD8:00 amChicago O'Hare Intl

4h 44m

SEA10:44 amSeattle/Tacoma Intl

Nov 15

SEA7:40 pmSeattle/Tacoma Intl

7h 21m

1 stop

ORD5:01 amChicago O'Hare Intl

$184

Find similar

Alaska Airlines

Nov 13

ORD6:00 amChicago O'Hare Intl

4h 40m

SEA8:40 amSeattle/Tacoma Intl

Nov 18

SEA5:20 amSeattle/Tacoma Intl

5h 49m

1 stop

ORD1:09 pmChicago O'Hare Intl

$187

Find similar

Frontier flights from Chicago to Seattle

Our best Frontier deals on Chicago to Seattle flight tickets

Frontier

Dec 4

MDW2:45 pmChicago Midway

31h 06m

2 stops

SEA7:51 pmSeattle/Tacoma Intl

Dec 13

SEA7:05 pmSeattle/Tacoma Intl

23h 31m

1 stop

MDW8:36 pmChicago Midway

$184

Find similar

Frontier

Nov 13

MDW12:30 pmChicago Midway

25h 43m

1 stop

SEA12:13 pmSeattle/Tacoma Intl

Nov 16

SEA2:22 pmSeattle/Tacoma Intl

19h 08m

1 stop

MDW11:30 amChicago Midway

$185

Find similar

Frontier

Oct 21

ORD7:15 amChicago O'Hare Intl

30h 52m

1 stop

SEA12:07 pmSeattle/Tacoma Intl

Oct 29

SEA12:58 pmSeattle/Tacoma Intl

9h 14m

1 stop

ORD12:12 amChicago O'Hare Intl

$191

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Fly from

Fly to

Route

Depart

Return

Price

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Fri 10/31

5:53 pm-8:35 pm

Nonstop4h 42m

Seattle/Tacoma Intl

Sat 11/8

7:40 pm-5:01 am

1 stop7h 21m

$178

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Thu 11/6

6:00 am-12:13 pm

1 stop8h 13m

Seattle/Tacoma Intl

Sun 11/9

11:35 am-7:28 am

2 stops41h 53m

$179

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Wed 11/12

9:22 pm-6:32 pm

2 stops23h 10m

Seattle/Tacoma Intl

Mon 11/17

2:22 pm-12:15 am

1 stop7h 53m

$180

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Fri 2/6

2:06 pm-6:46 pm

1 stop6h 40m

Seattle/Tacoma Intl

Sun 2/8

8:30 am-2:38 pm

Nonstop4h 08m

$183

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Wed 11/12

8:00 am-10:44 am

Nonstop4h 44m

Seattle/Tacoma Intl

Sat 11/15

7:40 pm-5:01 am

1 stop7h 21m

$184

ChicagoSeattle

MDW - SEA

MDWSEA

Chicago Midway

Fri 10/31

7:15 am-2:40 pm

1 stop9h 25m

Seattle/Tacoma Intl

Sun 11/9

6:35 am-12:30 pm

Nonstop3h 55m

$187

ChicagoSeattle

MDW - SEA

MDWSEA

Chicago Midway

Fri 10/31

9:05 am-11:40 am

Nonstop4h 35m

Seattle/Tacoma Intl

Tue 11/4

7:05 am-7:10 pm

2 stops10h 05m

$192

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Wed 11/19

7:47 am-10:40 am

Nonstop4h 53m

Seattle/Tacoma Intl

Sun 11/23

7:20 am-1:34 pm

Nonstop4h 14m

$197

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Thu 11/20

6:00 am-10:54 am

1 stop6h 54m

Seattle/Tacoma Intl

Sun 11/23

7:20 am-1:34 pm

Nonstop4h 14m

$207

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Mon 11/10

7:35 am-10:25 am

Nonstop4h 50m

Seattle/Tacoma Intl

Thu 11/13

12:59 am-6:59 am

Nonstop4h 00m

$211

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Layovers

Other information

What is the cheapest month to fly to Seattle?

In general, February 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 $219. If you don’t want to visit Seattle in February, then you should wait until April to fly from Chicago, when ticket prices are also cheap, with an average price of $229.

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 Wednesday. momondo users have found tickets for Wednesday departures for as low as $337. 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 $450.

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

Flying to Seattle from Chicago in the evening is the least expensive time of day to depart. momondo users have found prices as low as $325 when looking at flights departing in the evening. Flights to Seattle are more costly in the morning, with an average ticket price of $375. Departure times in the morning 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 Midway 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 weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $287 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Chicago for as low as $252 on momondo.

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?

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 October 2025, prices for Chicago to Seattle flights are approximately 49% 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	$164
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 $164. The best round-trip flight deal from Chicago to Seattle found on momondo in the last 72 hours is $247.

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)

Search flight deals

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 35m.
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?
As of October 2025, there are 8 operators available to choose from 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?
Based on momondo bookings for flights between Chicago and Seattle, the leading plane model is Boeing 737-900 Passenger/BBJ3 (winglets), making up 18.81% of the total bookings. Other popular models include Boeing 737-800 with 16.14%, Boeing 737 MAX 9 with 13.46%, and Airbus A321neo with 11.15%.
What is the most popular airline from Chicago to Seattle?
Based on momondo bookings for flights between Chicago and Seattle, the leading airline is Alaska Airlines, making up 31% of the total bookings. Other popular airlines include Delta with 25%, United Airlines with 18%, and American Airlines with 17%.

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
Hawaiian Airlines	PriceFrom $91	Free Cancellation	Rating 7.8 2,775 reviews	Search Hawaiian Airlines flights
Spirit Airlines	PriceFrom $105	Free Cancellation	Rating 6.3 8,087 reviews	Search Spirit Airlines flights
Delta	PriceFrom $120	Free Cancellation	Rating 7.9 7,970 reviews	Search Delta flights
Frontier	PriceFrom $127	Free Cancellation	Rating 5.8 3,143 reviews	Search Frontier flights
Alaska Airlines	PriceFrom $169	Free Cancellation	Rating 8.0 11,049 reviews	Search Alaska Airlines flights
American Airlines	PriceFrom $171	Free Cancellation	Rating 7.2 11,043 reviews	Search American Airlines flights
United Airlines	PriceFrom $177	Free Cancellation	Rating 7.4 8,966 reviews	Search United Airlines flights
Southwest	PriceFrom $189	Free Cancellation	Rating 8.0 4,236 reviews	Search Southwest flights

Alaska Airlines Flights From Chicago to Seattle
Alaska Airlines flies from Chicago to Seattle around 13 times per week, with 11,049 momondo users rating the airline 8.0/10. The cheapest Alaska Airlines deal from Chicago to Seattle in the last 72 hours was $169 (round-trip), much lower than the average airfare cost of $300 for Alaska Airlines flights on this route.
Southwest Flights From Chicago to Seattle
Another popular option for Chicago to Seattle flights is Southwest (8.0/10, 4,236 ratings). Southwest flies from Chicago to Seattle around 5 times per week, with deals starting from $189 round-trip and rising to an average price of around $423.

Tacoma

Leavenworth

SeaTac

Ocean Shores

Renton

Olympia

Lynnwood

Kent

Marysville

Puyallup

Federal Way

Tukwila

Kirkland

Fife

Centralia

Lakewood

Shoreline

Cle Elum

Redmond

Westport

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.

An easier way to manage your Seattle trip

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Cheap flights from Chicago to Seattle from $95

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 12/12. 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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Alaska Airlines flights from Chicago to Seattle

Our best Alaska Airlines deals on Chicago to Seattle flight tickets

Frontier flights from Chicago to Seattle

Our best Frontier deals on Chicago to Seattle flight tickets

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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 to Seattle?

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

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

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

Fly from Chicago Midway to Seattle/Tacoma Intl for the best Chicago - Seattle/Tacoma Intl flight prices

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

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?

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 October 2025, prices for Chicago to Seattle flights are approximately 49% more expensive when compared to flights at the same time last year.

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

Frontier, Southwest, and Delta are the most popular carriers operating from Chicago to Seattle/Tacoma Intl

What airlines fly to Seattle?

Which airport is the most popular layover for flights between Chicago and Seattle?

Denver (DEN) was the most common stop: 81% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Chicago to Seattle?

Flights via Phoenix (PHX) offer the lowest average round-trip price of $208.

Which layover airport has the shortest travel time from Chicago to Seattle?

Flights connecting via Phoenix (PHX) have the shortest average one-way travel time: 7h 35m.

Which layover airport has the shortest connection time from Chicago to Seattle?

Phoenix (PHX) has the shortest average layover time for this route: 1h 43m.

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

The number of flights available between Chicago and Seattle is 49 per day as of October 2025. The most frequent departure time is 5:00PM, with 52% of daily flights leaving in the afternoon.

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

346 flights are operational weekly from Chicago to Seattle as of October 2025. The most popular departure day for this route is Thu, with 17% of flights per week taking off on this day.

When to book flights from 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

Fastest flight time

Direct flights

Airports in Seattle

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

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

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?

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

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

Alaska Airlines Flights From Chicago to Seattle

Southwest Flights From Chicago to Seattle

Traveling to a place near Seattle?

Why use momondo?

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

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

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

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

An easier way to manage your Seattle trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States