HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Chicago

$85+ Cheap flights from Seattle (SEA) to Chicago (CHI)

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 3/19. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CHI
Feb 24 — Mar 31
Mon 2/24
Mon 3/3
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Seattle to Chicago 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 Seattle/Tacoma Intl to Chicago are usually found in January or September, booked 73 days in advance, depart on a Wednesday or Thursday and return on a Thursday

Cheap flight deals from Seattle to Chicago

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Chicago (CHI). 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 February 19, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$172
(Mytrip)

One-way from

$85
(Delta)

Popular in

December

Cheapest in

January

Average price

$269

Good round-trip deal

$323 or less

Good one-way deal

$185 or less
Provider with most accurate pricing for Seattle/Tacoma Intl-Chicago (CHI) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Chicago (CHI) flights.
Search Deals
From Seattle/Tacoma Intl to Chicago (CHI)
Search Deals
One-way flight from Seattle/Tacoma Intl to Chicago (CHI)
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($9 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2025
Search Deals
Price to beat on a round-trip flight from Seattle/Tacoma Intl to Chicago (CHI).
Search Deals
Price to beat on a one-way flight from Seattle/Tacoma Intl to Chicago (CHI).
Search Deals

Find flight deals from Seattle to Chicago

Cheapest flights from Seattle to Chicago
Explore the most affordable flight options available from Seattle to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 19, 2025.

This Mytrip deal was found by Cheapflights users on 2/18. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/319:48 amSEA - ORD
2 stops32h 25mSpirit Airlines
Wed 4/97:41 amORD - SEA
1 stop14h 20mSpirit Airlines
Deal found 2/18$172
This Mytrip deal was found by Cheapflights users on 2/18. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/1512:03 pmSEA - ORD
1 stop15h 01mFrontier
Sun 3/167:59 pmORD - SEA
1 stop16h 53mFrontier
Deal found 2/18$173
This Mytrip deal was found by Cheapflights users on 2/18. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/1512:03 pmSEA - MDW
1 stop15h 27mFrontier
Sun 3/168:44 pmMDW - SEA
1 stop16h 08mFrontier
Deal found 2/18$173
This United Airlines deal was found by Cheapflights users on 2/18. 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.
Tue 3/116:15 amSEA - ORD
1 stop8h 43mUnited Airlines
Wed 3/128:09 pmORD - SEA
Nonstop4h 44mUnited Airlines
Deal found 2/18$175
This Booking.com deal was found by Cheapflights users on 2/19. 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.
Sun 3/238:59 pmSEA - ORD
1 stop13h 40mMultiple Airlines
Wed 3/2612:30 pmORD - SEA
1 stop8h 39mMultiple Airlines
Deal found 2/19$177
This Southwest deal was found by Cheapflights users on 2/17. 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.
Tue 3/119:10 amSEA - MDW
Nonstop3h 55mSouthwest
Wed 3/125:40 pmMDW - SEA
Nonstop4h 35mSouthwest
Deal found 2/17$179
This SmartFares deal was found by Cheapflights users on 2/18. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/66:03 pmSEA - ORD
Nonstop3h 56mAlaska Airlines
Wed 3/127:45 amORD - SEA
Nonstop4h 43mAlaska Airlines
Deal found 2/18$183
This Delta deal was found by Cheapflights users on 2/18. 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 3/155:55 pmSEA - ORD
Nonstop3h 58mDelta
Wed 3/197:30 amORD - SEA
Nonstop4h 49mDelta
Deal found 2/18$193
This Trip.com deal was found by Cheapflights users on 2/18. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/66:03 pmSEA - ORD
Nonstop3h 56mHawaiian Airlines
Wed 3/127:45 amORD - SEA
Nonstop4h 43mHawaiian Airlines
Deal found 2/18$197
This American Airlines deal was found by Cheapflights users on 2/19. 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.
Mon 4/1412:59 amSEA - ORD
1 stop8h 08mAmerican Airlines
Tue 4/227:35 amORD - SEA
Nonstop4h 40mAmerican Airlines
Deal found 2/19$209
This Mytrip deal was found by Cheapflights users on 2/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/39:48 amSEA - RFD
1 stop9h 03mMultiple Airlines
Sun 4/69:41 pmRFD - SEA
1 stop13h 02mMultiple Airlines
Deal found 2/19$235
This Kissandfly.com deal was found by Cheapflights users on 2/19. 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.
Thu 4/178:00 amSEA - MDW
2 stops14h 21mMultiple Airlines
Mon 4/217:25 amMDW - SEA
1 stop8h 51mMultiple Airlines
Deal found 2/19$255

Find flights from Seattle to Chicago within your budget

Customize your flight search to find flights from Seattle to Chicago 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 2,558,603 searches. Data last updated February 19, 2025.

Fly from

Seattle

Fly to

Chicago

Route

Depart

Return

Price

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Mon 3/31

9:48 am-8:13 pm

2 stops32h 25m

Chicago O'Hare Intl

Wed 4/9

7:41 am-8:01 pm

1 stop14h 20m

$172

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Sat 3/15

12:03 pm-5:04 am

1 stop15h 01m

Chicago O'Hare Intl

Sun 3/16

7:59 pm-10:52 am

1 stop16h 53m

$173

SeattleChicago

SEA - MDW

SEAMDW

Seattle/Tacoma Intl

Sat 3/15

12:03 pm-5:30 am

1 stop15h 27m

Chicago Midway

Sun 3/16

8:44 pm-10:52 am

1 stop16h 08m

$173

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Tue 3/11

6:15 am-4:58 pm

1 stop8h 43m

Chicago O'Hare Intl

Wed 3/12

8:09 pm-10:53 pm

Nonstop4h 44m

$175

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Sun 3/23

8:59 pm-12:39 pm

1 stop13h 40m

Chicago O'Hare Intl

Wed 3/26

12:30 pm-7:09 pm

1 stop8h 39m

$177

SeattleChicago

SEA - MDW

SEAMDW

Seattle/Tacoma Intl

Tue 3/11

9:10 am-3:05 pm

Nonstop3h 55m

Chicago Midway

Wed 3/12

5:40 pm-8:15 pm

Nonstop4h 35m

$179

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Wed 3/19

7:55 am-2:16 pm

Nonstop4h 21m

Chicago O'Hare Intl

Tue 3/25

7:16 pm-10:00 pm

Nonstop4h 44m

$189

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Sat 3/15

5:55 pm-11:53 pm

Nonstop3h 58m

Chicago O'Hare Intl

Tue 3/18

7:30 am-10:19 am

Nonstop4h 49m

$193

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Thu 3/6

11:46 am-6:00 pm

Nonstop4h 14m

Chicago O'Hare Intl

Wed 3/12

7:45 am-10:28 am

Nonstop4h 43m

$197

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Mon 4/14

12:59 am-11:07 am

1 stop8h 08m

Chicago O'Hare Intl

Tue 4/22

7:35 am-10:15 am

Nonstop4h 40m

$209

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

Showing 1-10 of 28 results
1
2
3

Compare providers for flights from Seattle to Chicago

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 Seattle to Chicago in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
Kiwi.comPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
Trip.comPrice Accuracy1 starTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
CheapOairPrice Accuracy1 starTrust Score*3 stars
FlightnetworkPrice Accuracy2 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*3 stars

*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 Seattle-Chicago flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Chicago flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Chicago flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Chicago 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 Seattle-Chicago 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 Seattle to Chicago

Have a flexible travel schedule? Discover the best time to fly to Chicago from Seattle 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 Seattle to Chicago

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

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

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Chicago. Price data was last updated on February 14, 2025.

The price you pay for your flight from Seattle to Chicago may vary depending on when you book. For the best chance of a lower fare, look to book 73 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, August is the cheapest month in which you can book a flight from Seattle to Chicago (average of $245). Flying from Seattle to Chicago in March is currently the most expensive (average of $321). 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 SEA to CHI?

Find hourly flight availability from Seattle to Chicago. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 19, 2025.

It’s typically best to fly out from Seattle to Chicago in the afternoon. Doing so could potentially save you 44% on the flight price compared to flying in the morning, which is usually more expensive.

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

Use this chart to determine the cheapest time to fly round-trip from Seattle to Chicago. Price data was last updated on February 16, 2025.

Travelers seeking maximum savings on their Seattle to Chicago flight should consider departing on Wednesday 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.

Weekly flight availability from Seattle to Chicago

Explore weekly flight availability from Seattle to Chicago. 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 February 19, 2025.

The most flights from SEA to CHI are scheduled on a Monday (36 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (25 on average).

Rainfall in Chicago by month

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

In terms of precipitation, rainfall in Chicago ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Chicago when rainfall is around 1.7 in.

Temperature in Chicago by month

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

If weather is an important factor for your trip to Chicago, 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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

Reviews of airlines servicing Chicago

Get insights into the airlines that provide service to Chicago. 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 Chicago. Reviews last updated February 19, 2025.
Read through reviews of airlines operating flights from Seattle to Chicago, such as Southwest, Alaska Airlines and Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,413 reviews

Comfort

8.1

Crew

8.7

Overall

8.1

Boarding

8.2

Entertainment

7.6

Food

7.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Southwest
8.1
Very good
4,413 reviews
Southwest
8.1
Very good
4,413 reviews

Comfort

8.1

Crew

8.7

Overall

8.1

Boarding

8.2

Entertainment

7.6

Food

7.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Alaska Airlines
8.0
Very good
9,691 reviews
Southwest
8.1
Very good
4,413 reviews

Comfort

8.1

Crew

8.7

Overall

8.1

Boarding

8.2

Entertainment

7.6

Food

7.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Delta
8.0
Very good
8,236 reviews
Southwest
8.1
Very good
4,413 reviews

Comfort

8.1

Crew

8.7

Overall

8.1

Boarding

8.2

Entertainment

7.6

Food

7.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Hawaiian Airlines
7.9
Good
2,317 reviews
Southwest
8.1
Very good
4,413 reviews

Comfort

8.1

Crew

8.7

Overall

8.1

Boarding

8.2

Entertainment

7.6

Food

7.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

United Airlines
7.4
Good
8,771 reviews
Southwest
8.1
Very good
4,413 reviews

Comfort

8.1

Crew

8.7

Overall

8.1

Boarding

8.2

Entertainment

7.6

Food

7.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Chicago. 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 from for flights from Seattle to Chicago?

    For a flight from Seattle to Chicago, you will be flying from Seattle/Tacoma Intl. Seattle/Tacoma Intl (SEA) is just 11.4 mi from the center of the city. Seattle/Tacoma Intl is the only Seattle airport and it handles 30 outbound flights to Chicago per day. 7 airlines have flights to Chicago from Seattle/Tacoma Intl on a regular basis.

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

    Our cheapest airline available from Seattle to Chicago is Spirit Airlines. Our recent data shows that you can find tickets from as low as $172 on this airline. Additional options worth looking into are Frontier and United Airlines, starting at $173 and $175 round-trip. Users have found that Spirit Airlines is 43% cheaper than the other options available to this destination.

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

    To fly one-way, consider booking your trip with Delta, which is currently one of the cheapest options available, starting at $85. Southwest flights start at $85 while deals on Frontier start at $86 one-way.

  • What are the most popular routes from Seattle to Chicago?

    While some choose either Seattle/Tacoma Intl - Chicago Midway or Seattle/Tacoma Intl - Chicago Greater Rockford, Seattle/Tacoma Intl - Chicago O'Hare Intl is the most popular route from Seattle to Chicago.

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

    No one likes to see their flight delayed. When booking a flight from Seattle to Chicago consider choosing Royal Jordanian (100%), United Airlines (94%) or SWISS (93%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Seattle to Chicago?

    Looking for the cheapest flight from Seattle to Chicago? While on average our users pay $793, our data indicates the cheapest price to be $95. The most popular route (Seattle/Tacoma Intl - Chicago O'Hare Intl), is priced around $125.

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

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Seattle to Chicago (average of $245). Flying from Seattle to Chicago in March is currently the most expensive (average of $321). 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

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Merrillville
New Buffalo
Hammond
Benton Harbor
Porter
Lansing
Valparaiso
Chesterton

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 Seattle to Chicago

See prices for flight routes from nearby airports that may be better suited for you.
Seattle to O'Hare Intl flights
Seattle to Midway flights
Portland to O'Hare Intl flights
Seattle to St. Louis flights
Portland to Midway flights
Portland to St. Louis flights
Spokane to O'Hare Intl flights
Seattle to Moline flights
Spokane to Midway flights
Seattle to Peoria flights
Pasco to O'Hare Intl flights
Pasco to Midway flights
Spokane to St. Louis flights
Portland to Peoria flights
Bellingham to O'Hare Intl flights
Seattle to Decatur flights
Portland to Rockford flights
Portland to Moline flights
Seattle to Bloomington flights
Pasco to St. Louis flights
Seattle to Evansville flights
Seattle to Springfield flights
Wenatchee to O'Hare Intl flights
Spokane to Peoria flights
Seattle to Champaign flights
Portland to Evansville flights
Portland to Springfield flights
Pullman to O'Hare Intl flights
Pullman to St. Louis flights
Seattle to Dubuque flights
Portland to Bloomington flights
Portland to Champaign flights
Seattle to Rockford flights
Spokane to Rockford flights
Yakima to O'Hare Intl flights
Walla Walla to Moline flights
Portland to Paducah flights
Walla Walla to St. Louis flights
Walla Walla to O'Hare Intl flights
Seattle to Paducah flights
Spokane to Evansville flights
Portland to Decatur flights
Spokane to Springfield flights
Spokane to Moline flights
Portland to Dubuque flights
Spokane to Dubuque flights
Spokane to Champaign flights
Spokane to Bloomington flights
Bellingham to St. Louis flights
Portland to Marion flights

Top 7 airlines flying from Seattle to Chicago

Discover the top 7 airlines that operate flights from Seattle to Chicago. 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 2,558,603 searches. Data last updated February 19, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$107Average$235FlexibilityNo cancel feeOn-time65%
DeltaCheapest$108Average$447FlexibilityNo cancel feeOn-timeN/A
FrontierCheapest$135Average$246FlexibilityNo cancel feeOn-time62%
Alaska AirlinesCheapest$146Average$331FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$147Average$332FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$157Average$358FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$188Average$400FlexibilityNo 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.