HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Seattle

$53+ Cheap flights from Chicago (CHI) to Seattle (SEA)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/16. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — SEA
Oct 28 — Nov 41
Mon 10/28
Mon 11/4
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Edit search

CHI - SEA
Oct 28 - Nov 4

Find cheap flights from Chicago to Seattle with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

The best prices from Chicago to Seattle/Tacoma Intl are usually found in January or February, booked 29 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

Cheap flight deals from Chicago to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 23, 2024.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Popular in

July

Cheapest in

January

Round-trip from

$107
(Mytrip)

One-way from

$53
(Cheapflightsfares)
Provider with most accurate pricing for Chicago (CHI)-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Seattle/Tacoma Intl flights.
Search Deals
High demand for flights, 31% potential price rise
Search Deals
Best time to find cheap flights, 37% potential price drop
Search Deals
From Chicago (CHI) to Seattle/Tacoma Intl
Search Deals
One-way flight from Chicago (CHI) to Seattle/Tacoma Intl
Search Deals

Find flight deals from Chicago to Seattle

Cheapest flights from Chicago to Seattle
Explore the most affordable flight options available from Chicago to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 23, 2024.

This CheapOair deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/24:19 pmMDW - SEA
1 stop18h 41mFrontier
Tue 11/58:19 pmSEA - MDW
1 stop17h 31mFrontier
Deal found 10/21$157
This Booking.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/111:29 amORD - SEA
1 stop22h 38mFrontier
Wed 11/68:28 pmSEA - ORD
1 stop11h 19mFrontier
Deal found 10/21$157
This Kiwi.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/57:20 amORD - SEA
1 stop18h 50mMultiple Airlines
Tue 11/129:19 amSEA - ORD
1 stop11h 57mMultiple Airlines
Deal found 10/21$158
This Kiwi.com deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/207:00 amORD - SEA
Nonstop4h 38mAlaska Airlines
Sun 11/2410:30 pmSEA - ORD
Nonstop4h 00mAlaska Airlines
Deal found 10/22$166
This Delta deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/162:15 pmORD - SEA
Nonstop4h 44mDelta
Wed 11/205:59 pmSEA - ORD
Nonstop3h 59mDelta
Deal found 10/23$169
This Cheapflightsfares deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2112:57 pmORD - SEA
1 stop9h 33mSpirit Airlines
Sun 11/249:35 pmSEA - ORD
1 stop12h 17mSpirit Airlines
Deal found 10/23$171
This Southwest deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/169:40 amMDW - SEA
1 stop8h 50mSouthwest
Thu 11/219:05 amSEA - MDW
Nonstop4h 05mSouthwest
Deal found 10/22$188
This United Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/154:05 pmORD - SEA
Nonstop4h 49mUnited Airlines
Mon 11/1812:55 pmSEA - ORD
1 stop9h 57mUnited Airlines
Deal found 10/23$192
This Kissandfly.com deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/2012:09 pmMDW - SEA
2 stops23h 42mMultiple Airlines
Sun 11/249:09 amSEA - MDW
1 stop26h 31mMultiple Airlines
Deal found 10/22$222
This American Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/149:55 amORD - SEA
Nonstop4h 48mAmerican Airlines
Wed 12/2512:31 amSEA - ORD
Nonstop4h 03mAmerican Airlines
Deal found 10/22$262
This Sun Country Air deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/239:47 amORD - SEA
1 stop14h 56mSun Country Air
Sun 12/2911:59 pmSEA - ORD
1 stop16h 39mSun Country Air
Deal found 10/22$275
This Delta deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/74:58 pmMDW - SEA
1 stop9h 23mDelta
Fri 12/1312:53 amSEA - MDW
1 stop5h 57mDelta
Deal found 10/23$435

Find flights from Chicago to Seattle within your budget

Customize your flight search to find flights from Chicago to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,499,819 searches. Data last updated October 23, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$107 - $435

Route

Depart

Return

Price

Chicago O'Hare IntlSeattle/Tacoma Intl

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Thu 12/5

1 stop16h 21m

Seattle/Tacoma Intl

Thu 12/12

1 stop27h 50m

$107

Chicago O'Hare IntlSeattle/Tacoma Intl

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Wed 11/6

1 stop9h 07m

Seattle/Tacoma Intl

Tue 11/12

Nonstop4h 09m

$144

Chicago MidwaySeattle/Tacoma Intl

MDW - SEA

MDWSEA

Chicago Midway

Sat 11/2

1 stop18h 41m

Seattle/Tacoma Intl

Tue 11/5

1 stop17h 31m

$157

Chicago O'Hare IntlSeattle/Tacoma Intl

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Tue 1/14

Nonstop4h 51m

Seattle/Tacoma Intl

Tue 1/21

Nonstop3h 59m

$159

Chicago O'Hare IntlSeattle/Tacoma Intl

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Sat 11/16

Nonstop4h 44m

Seattle/Tacoma Intl

Wed 11/20

Nonstop3h 59m

$169

Chicago O'Hare IntlSeattle/Tacoma Intl

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Thu 11/21

1 stop9h 33m

Seattle/Tacoma Intl

Sun 11/24

1 stop12h 17m

$171

Chicago MidwaySeattle/Tacoma Intl

MDW - SEA

MDWSEA

Chicago Midway

Wed 1/8

Nonstop4h 35m

Seattle/Tacoma Intl

Mon 1/13

Nonstop4h 00m

$179

Chicago O'Hare IntlSeattle/Tacoma Intl

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Fri 11/15

Nonstop4h 49m

Seattle/Tacoma Intl

Mon 11/18

1 stop9h 57m

$192

Chicago MidwaySeattle/Tacoma Intl

MDW - SEA

MDWSEA

Chicago Midway

Wed 11/20

2 stops23h 42m

Seattle/Tacoma Intl

Sun 11/24

1 stop26h 31m

$222

Chicago O'Hare IntlSeattle/Tacoma Intl

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Sat 12/14

Nonstop4h 48m

Seattle/Tacoma Intl

Wed 12/25

Nonstop4h 03m

$262

Chicago O'Hare IntlSeattle/Tacoma Intl

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Mon 12/23

1 stop14h 56m

Seattle/Tacoma Intl

Sun 12/29

1 stop16h 39m

$275

Chicago MidwaySeattle/Tacoma Intl

MDW - SEA

MDWSEA

Chicago Midway

Sat 12/7

1 stop8h 47m

Seattle/Tacoma Intl

Fri 12/13

1 stop5h 57m

$435

Flights are sorted by cheapest first

Deals found on 10/22

Compare providers for flights from Chicago to Seattle

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Chicago to Seattle in October.
ProviderPrice AccuracyTrust Score*Cancellation Policy
ExpediaPrice Accuracy2 starsTrust Score*3 starsCancellation PolicyAirline Policy
FlightHubPrice Accuracy3 starsTrust Score*3 starsCancellation PolicyAirline Policy
eDreamsPrice Accuracy3 starsTrust Score*3 starsCancellation PolicyAirline Policy
CheapflightsfaresPrice Accuracy3 starsTrust Score*3 starsCancellation PolicyAirline Policy
CheapTicketsDealPrice Accuracy3 starsTrust Score*3 starsCancellation PolicyAirline Policy
Kiwi.comPrice Accuracy3 starsTrust Score*3 starsCancellation PolicyNo Information
KAYAKPrice Accuracy1 starTrust Score*3 starsCancellation PolicyAirline Policy
PricelinePrice Accuracy1 starTrust Score*3 starsCancellation PolicyAirline Policy
Trip.comPrice Accuracy2 starsTrust Score*3 starsCancellation PolicyNo Information
FlightsMojoPrice Accuracy-Trust Score*3 starsCancellation PolicyNo Information

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Chicago-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Chicago-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Chicago-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Chicago-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Chicago-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Chicago to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Chicago with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Chicago to Seattle

Get recent, data-driven insights about flights from Chicago to Seattle including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Chicago to Seattle?

Use this chart to determine the optimal time to book a round-trip flight from Chicago to Seattle. Price data was last updated on October 18, 2024.

The best time to book flights from Chicago to Seattle is 29 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Find deals

What is the cheapest month to book a flight from Chicago to Seattle?

Currently, January is the cheapest month in which you can book a flight from Chicago to Seattle (average of $238). Flying from Chicago to Seattle in July is currently the most expensive (average of $411). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from CHI to SEA?

Find hourly flight availability from Chicago to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 23, 2024.

It’s typically best to fly out from Chicago to Seattle in the evening. Doing so could potentially save you 4% on the flight price compared to flying at noon, which is usually more expensive.

What is the cheapest day to fly from Chicago to Seattle?

Use this chart to determine the cheapest time to fly round-trip from Chicago to Seattle. Price data was last updated on October 20, 2024.

Travelers seeking maximum savings on their Chicago to Seattle flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Find deals

Weekly flight availability from Chicago to Seattle

Explore weekly flight availability from Chicago to Seattle. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated October 23, 2024.

The most flights from CHI to SEA are scheduled on a Monday (45 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (11 on average).

Rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

Temperature in Seattle by month

Plan your trip to Seattle by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated October 23, 2024.
Read through reviews of airlines operating flights from Chicago to Seattle, such as Spirit Airlines, American Airlines and Frontier. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
5,156 reviews

Overall

8.1

Crew

8.7

Comfort

8.1

Entertainment

7.7

Food

7.2

Boarding

8.3

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Southwest
8.1
Very good
5,156 reviews
Southwest
8.1
Very good
5,156 reviews

Overall

8.1

Crew

8.7

Comfort

8.1

Entertainment

7.7

Food

7.2

Boarding

8.3

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Alaska Airlines
8.0
Very good
9,411 reviews
Southwest
8.1
Very good
5,156 reviews

Overall

8.1

Crew

8.7

Comfort

8.1

Entertainment

7.7

Food

7.2

Boarding

8.3

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Delta
8.0
Very good
8,885 reviews
Southwest
8.1
Very good
5,156 reviews

Overall

8.1

Crew

8.7

Comfort

8.1

Entertainment

7.7

Food

7.2

Boarding

8.3

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

United Airlines
7.4
Good
9,283 reviews
Southwest
8.1
Very good
5,156 reviews

Overall

8.1

Crew

8.7

Comfort

8.1

Entertainment

7.7

Food

7.2

Boarding

8.3

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

WestJet
7.3
Good
2,807 reviews
Southwest
8.1
Very good
5,156 reviews

Overall

8.1

Crew

8.7

Comfort

8.1

Entertainment

7.7

Food

7.2

Boarding

8.3

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Related info for your journey

Find useful and relevant information for your journey from Chicago to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Seattle from Chicago?

    Seattle/Tacoma Intl (SEA), located 11.4 mi from the city center, is the airport you fly into when you book flights from Chicago to Seattle. 8 airlines have flights to Seattle/Tacoma Intl from Chicago on a regular basis. Booking flights from Chicago to Seattle/Tacoma Intl should not be difficult; the airport handles an average of 32 inbound flights from Chicago per day.

  • Can I find flights from Chicago to Seattle for under $200 on Cheapflights?

    Yes, there are multiple flights from Chicago to Seattle for under $200. The cheapest flight booked recently is on Frontier for just $107, but on average you can expect to pay $206.

  • Are there nonstop flights from Chicago to Seattle for under $200 on Cheapflights?

    Cheapflights has at least 5 direct flights from Chicago to Seattle under $200. A good price for a nonstop flight from Chicago to Seattle is less than $189.

  • Are there last-minute flights available from Chicago to Seattle for under $200?

    There are currently 11+ open flights from Chicago to Seattle within the next 7 days for less than $200.

  • What days are nonstop flights available from Chicago to Seattle?

    Nonstop flights are available for this route on the following days: Sunday, Monday, Wednesday, Thursday, Friday, Saturday.

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

    On average, you can expect to see 69 flights from Chicago to Seattle a day.
    Early Morning (Midnight to 6am) - 12% of flight departures
    Morning (6am - Noon) - 19% of flight departures
    Afternoon (Noon - 6pm) - 42% of flight departures
    Evening (6pm - Midnight) - 28% of flight departures

  • How long is the flight from Chicago to Seattle?

    For as low as $107, Frontier can have you in Seattle from Chicago in 4h 44m. The distance from Chicago to Seattle is about 1725 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Chicago to Seattle round-trip?

    Our cheapest airline available from Chicago to Seattle is Frontier. Our recent data shows that you can find tickets from as low as $107 on this airline. Additional options worth looking into are Alaska Airlines and Delta, starting at $159 and $169 round-trip. Frontier is priced at 60% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Chicago to Seattle one-way?

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $53. Southwest flights start at $85 while deals on Alaska Airlines start at $85 one-way.

  • What are the most reliable airlines from Chicago to Seattle?

    No one likes to see their flight delayed. When booking a flight from Chicago to Seattle consider choosing Air France (100%), Brussels Airlines (95%) or Austrian Airlines (94%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Chicago to Seattle?

    Looking at all options, your cheapest flight can be booked for $84. While the most popular route (Chicago O'Hare Intl - Seattle/Tacoma Intl) can be booked for $118 on average our data indicates $731 when flying from Chicago to Seattle.

  • What does ORD to SEA mean?

    This is defined as Chicago O'Hare Intl Airport (ORD) and Seattle/Tacoma Intl Airport (SEA). Codes like Seattle/Tacoma Intl Airport are often used to just call airports uniquely. Chicago Midway Airport (MDW), Chicago Greater Rockford Airport (RFD) are other airports near this flight route and their unique identifiers/IATA codes.

  • Can I find deals for flights from Chicago to Seattle that include extra baggage allowance?

    The amount of baggage you can bring on your Chicago to Seattle flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Chicago to Seattle with specific airlines?

    Yes, Cheapflights allows you to browse and filter Chicago to Seattle flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from Chicago to Seattle that include hotel bookings?

    Yes. In addition to deals on Chicago to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Chicago to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Chicago to Seattle.

  • Can I find deals for business class flights from Chicago to Seattle?

    Yes. Cheapflights offers flight deals from Chicago to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from Chicago to Seattle that allow pets onboard?

    Many airlines flying from Chicago to Seattle offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Chicago to Seattle?

    Yes, you can often find last-minute deals on Chicago to Seattle flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Chicago to Seattle flight deals updated?

    The Chicago to Seattle flight deals you see on this page were last updated on 10/23.

  • What is the cheapest month to book a flight from Chicago to Seattle?

    Currently, January is the cheapest month in which you can book a flight from Chicago to Seattle (average of $238). Flying from Chicago to Seattle in July is currently the most expensive (average of $411). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Chicago to Seattle
See prices for flight routes from nearby airports that may be better suited for you.

O'Hare Intl to Seattle flights
O'Hare Intl to Portland flights
Midway to Seattle flights
St. Louis to Seattle flights
Midway to Portland flights
St. Louis to Portland flights
O'Hare Intl to Spokane flights
Moline to Seattle flights
Midway to Spokane flights
Peoria to Seattle flights
Peoria to Portland flights
Decatur to Seattle flights
St. Louis to Spokane flights
Champaign to Seattle flights
Moline to Portland flights
Bloomington to Seattle flights
O'Hare Intl to Bellingham flights
O'Hare Intl to Pasco flights
Evansville to Seattle flights
Bloomington to Portland flights
Evansville to Portland flights
Champaign to Portland flights
Midway to Pasco flights
O'Hare Intl to Wenatchee flights
St. Louis to Pasco flights
Moline to Pasco flights
Decatur to Portland flights
Springfield to Portland flights
O'Hare Intl to Walla Walla flights
O'Hare Intl to Pullman flights
Bloomington to Spokane flights
St. Louis to Pullman flights
Peoria to Spokane flights
Dubuque to Seattle flights
Quincy to Seattle flights
Springfield to Seattle flights
Moline to Walla Walla flights
Paducah to Seattle flights
O'Hare Intl to Yakima flights
Springfield to Spokane flights
Springfield to Bellingham flights
Evansville to Spokane flights
Peoria to Pasco flights
Moline to Spokane flights
Dubuque to Portland flights
St. Louis to Yakima flights

Top 7 airlines flying from Chicago to Seattle

Discover the top 7 airlines that operate flights from Chicago to Seattle. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,499,819 searches. Data last updated October 23, 2024.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$106Average$293FlexibilityNo cancel feeOn-time75%
DeltaCheapest$107Average$420FlexibilityNo cancel feeOn-timeN/A
FrontierCheapest$118Average$220FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$125Average$243FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$138Average$318FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$144Average$333FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$197Average$333FlexibilityNo cancel feeOn-time63%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
View all available airlines