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$94+ 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 3/2. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CHI
Jan 21 — Jan 281
Tue 1/21
Tue 1/28
1 adult, Economy
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The best prices from Seattle/Tacoma Intl to Chicago are usually found in February or September, booked 26 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

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 January 16, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$178
(Delta)

One-way from

$94
(United Airlines)

Popular in

December

Cheapest in

February

Average price

$247
Provider with most accurate pricing for Seattle/Tacoma Intl-Chicago (CHI) flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Chicago (CHI) flights.
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From Seattle/Tacoma Intl to Chicago (CHI)
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One-way flight from Seattle/Tacoma Intl to Chicago (CHI)
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High demand for flights, 6% potential price rise
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Best time to find cheap flights, 2% potential price drop
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Average for round-trip flights in January 2025
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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 January 16, 2025.

This Delta deal was found by Cheapflights users on 1/16. 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.
Thu 2/205:55 pmSEA - ORD
Nonstop4h 01mDelta
Tue 3/47:00 amORD - SEA
Nonstop4h 58mDelta
Deal found 1/16$178
This Southwest deal was found by Cheapflights users on 1/14. 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 2/810:10 amSEA - MDW
Nonstop4h 05mSouthwest
Sun 2/99:15 amMDW - SEA
Nonstop4h 35mSouthwest
Deal found 1/14$178
This Travelocity deal was found by Cheapflights users on 1/15. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/126:00 pmSEA - ORD
Nonstop3h 59mMultiple Airlines
Sat 2/154:30 pmORD - SEA
1 stop9h 55mMultiple Airlines
Deal found 1/15$179
This eDestinos deal was found by Cheapflights users on 1/16. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/221:36 pmSEA - MDW
1 stop8h 41mFrontier
Mon 2/245:10 amMDW - SEA
2 stops35h 34mFrontier
Deal found 1/16$179
This FlightHub deal was found by Cheapflights users on 1/16. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/185:15 amSEA - ORD
1 stop22h 52mSpirit Airlines
Thu 2/2710:45 pmORD - SEA
1 stop22h 07mSpirit Airlines
Deal found 1/16$181
This Frontier deal was found by Cheapflights users on 1/16. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/313:15 pmSEA - ORD
1 stop7h 17mFrontier
Thu 2/67:25 amORD - SEA
1 stop10h 10mFrontier
Deal found 1/16$184
This United Airlines deal was found by Cheapflights users on 1/16. 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.
Sun 2/2311:59 pmSEA - ORD
Nonstop3h 54mUnited Airlines
Fri 2/284:05 pmORD - SEA
Nonstop4h 40mUnited Airlines
Deal found 1/16$187
This Alaska Airlines deal was found by Cheapflights users on 1/16. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/89:59 pmSEA - ORD
1 stop13h 08mAlaska Airlines
Sat 2/157:45 amORD - SEA
Nonstop4h 43mAlaska Airlines
Deal found 1/16$188
This eDestinos deal was found by Cheapflights users on 1/16. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/211:38 amSEA - MDW
1 stop15h 53mMultiple Airlines
Tue 3/47:05 amMDW - SEA
2 stops30h 41mMultiple Airlines
Deal found 1/16$189
This American Airlines deal was found by Cheapflights users on 1/16. 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 2/1712:59 amSEA - ORD
1 stop8h 04mAmerican Airlines
Fri 2/288:25 pmORD - SEA
Nonstop4h 41mAmerican Airlines
Deal found 1/16$272
This Sun Country Air deal was found by Cheapflights users on 1/15. 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.
Thu 6/1211:59 pmSEA - ORD
1 stop17h 12mSun Country Air
Fri 6/208:10 pmORD - SEA
1 stop23h 22mSun Country Air
Deal found 1/15$325
This Mytrip deal was found by Cheapflights users on 1/16. 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 2/205:15 amSEA - RFD
1 stop13h 37mMultiple Airlines
Sun 2/239:42 pmRFD - SEA
2 stops21h 01mMultiple Airlines
Deal found 1/16$329

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 January 16, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Thu 2/20

5:55 pm-11:56 pm

Nonstop4h 01m

Chicago O'Hare Intl

Tue 2/25

7:00 am-9:58 am

Nonstop4h 58m

$178

SeattleChicago

SEA - MDW

SEAMDW

Seattle/Tacoma Intl

Sun 3/2

5:15 am-11:13 am

2 stops27h 58m

Chicago Midway

Tue 3/4

7:05 am-11:46 am

2 stops30h 41m

$178

SeattleChicago

SEA - MDW

SEAMDW

Seattle/Tacoma Intl

Sat 2/22

1:36 pm-12:17 am

1 stop8h 41m

Chicago Midway

Mon 2/24

5:10 am-2:44 pm

2 stops35h 34m

$179

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Sun 2/2

3:18 pm-2:11 pm

1 stop20h 53m

Chicago O'Hare Intl

Fri 2/7

7:25 am-2:25 pm

1 stop9h 00m

$180

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Tue 2/18

5:15 am-6:07 am

1 stop22h 52m

Chicago O'Hare Intl

Thu 2/27

10:45 pm-6:52 pm

1 stop22h 07m

$181

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Mon 2/17

11:59 pm-5:53 am

Nonstop3h 54m

Chicago O'Hare Intl

Thu 2/20

6:50 am-12:02 pm

1 stop7h 12m

$185

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Sat 3/1

6:03 pm-11:59 pm

Nonstop3h 56m

Chicago O'Hare Intl

Mon 3/3

5:54 pm-8:35 pm

Nonstop4h 41m

$186

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Sun 2/23

11:59 pm-5:53 am

Nonstop3h 54m

Chicago O'Hare Intl

Fri 2/28

4:05 pm-6:45 pm

Nonstop4h 40m

$187

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Sat 3/1

1:33 pm-7:43 pm

Nonstop4h 10m

Chicago O'Hare Intl

Sat 3/8

8:25 pm-11:09 pm

Nonstop4h 44m

$191

SeattleChicago

SEA - MDW

SEAMDW

Seattle/Tacoma Intl

Wed 2/12

10:40 am-4:40 pm

Nonstop4h 00m

Chicago Midway

Sun 2/16

8:45 am-11:20 am

Nonstop4h 35m

$199

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/16

Showing 1-10 of 26 results
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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 January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*1 star
Kiwi.comPrice Accuracy3 starsTrust Score*3 stars
Trip.comPrice Accuracy2 starsTrust Score*3 stars
PricelinePrice Accuracy2 starsTrust Score*3 stars
CheapOairPrice Accuracy2 starsTrust Score*2 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
KAYAKPrice Accuracy-Trust Score*1 star

*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 January 10, 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 26 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 $320). 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 January 16, 2025.

It’s typically best to fly out from Seattle to Chicago in the afternoon. Doing so could potentially save you 15% 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 December 16, 2024.

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 January 16, 2025.

The most flights from SEA to CHI are scheduled on a Wednesday (33 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (14 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 January 16, 2025.
Read through reviews of airlines operating flights from Seattle to Chicago, such as United Airlines, Frontier and Spirit Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,659 reviews

Boarding

8.2

Crew

8.7

Overall

8.1

Comfort

8.1

Entertainment

7.7

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Southwest
8.1
Very good
4,659 reviews
Southwest
8.1
Very good
4,659 reviews

Boarding

8.2

Crew

8.7

Overall

8.1

Comfort

8.1

Entertainment

7.7

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Alaska Airlines
8.0
Very good
9,681 reviews
Southwest
8.1
Very good
4,659 reviews

Boarding

8.2

Crew

8.7

Overall

8.1

Comfort

8.1

Entertainment

7.7

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Delta
8.0
Very good
8,511 reviews
Southwest
8.1
Very good
4,659 reviews

Boarding

8.2

Crew

8.7

Overall

8.1

Comfort

8.1

Entertainment

7.7

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

United Airlines
7.4
Good
8,964 reviews
Southwest
8.1
Very good
4,659 reviews

Boarding

8.2

Crew

8.7

Overall

8.1

Comfort

8.1

Entertainment

7.7

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,659 reviews

Boarding

8.2

Crew

8.7

Overall

8.1

Comfort

8.1

Entertainment

7.7

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

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 24 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 Delta. Our recent data shows that you can find tickets from as low as $178 on this airline. Additional options worth looking into are Frontier and Spirit Airlines, starting at $179 and $181 round-trip. Users have found that Delta is 40% 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 United Airlines, which is currently one of the cheapest options available, starting at $94. Frontier flights start at $94 while deals on Spirit Airlines start at $95 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%), Iberia (92%) or Singapore Airlines (91%) 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 $886, our data indicates the cheapest price to be $106. The most popular route (Seattle/Tacoma Intl - Chicago O'Hare Intl), is priced around $142.

  • 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 $320). 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

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Alternative routes for Seattle to Chicago

See prices for flight routes from nearby airports that may be better suited for you.
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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 January 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$104Average$443FlexibilityNo cancel feeOn-timeN/A
Spirit AirlinesCheapest$107Average$235FlexibilityNo cancel feeOn-time65%
FrontierCheapest$131Average$268FlexibilityNo cancel feeOn-time62%
Alaska AirlinesCheapest$133Average$323FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$140Average$341FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$157Average$359FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$179Average$398FlexibilityNo cancel feeOn-time63%
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