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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 3/17. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CHI
Dec 23 — Dec 301
Mon 12/23
Mon 12/30
1 adult, Economy
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The best prices from Seattle/Tacoma Intl to Chicago are usually found in January or February, booked 73 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 December 18, 2024.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$180
(Trip.com)

One-way from

$94
(United Airlines)

Popular in

December

Cheapest in

January

Average price

$382
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, 4% 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 December 2024
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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 December 18, 2024.

This Delta deal was found by Cheapflights users on 12/18. 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.
Tue 12/315:55 pmSEA - ORD
Nonstop4h 04mDelta
Tue 1/77:15 amORD - SEA
Nonstop4h 56mDelta
Deal found 12/18$226
This CheapOair deal was found by Cheapflights users on 12/16. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/309:36 pmSEA - ORD
1 stop13h 44mFrontier
Mon 1/66:00 amORD - SEA
1 stop9h 10mFrontier
Deal found 12/16$248
This Expedia deal was found by Cheapflights users on 12/16. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/306:00 amSEA - ORD
Nonstop4h 10mMultiple Airlines
Mon 1/68:52 amORD - SEA
1 stop17h 18mMultiple Airlines
Deal found 12/16$278
This Alaska Airlines deal was found by Cheapflights users on 12/18. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3110:59 pmSEA - ORD
1 stop12h 06mAlaska Airlines
Tue 1/73:03 pmORD - SEA
Nonstop4h 48mAlaska Airlines
Deal found 12/18$297
This American Airlines deal was found by Cheapflights users on 12/18. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/3012:31 amSEA - ORD
Nonstop4h 03mAmerican Airlines
Tue 1/73:20 pmORD - SEA
1 stop9h 23mAmerican Airlines
Deal found 12/18$318
This United Airlines deal was found by Cheapflights users on 12/16. 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.
Wed 12/2511:51 pmSEA - ORD
Nonstop4h 00mUnited Airlines
Tue 1/77:15 amORD - SEA
1 stop8h 45mUnited Airlines
Deal found 12/16$352
This Mytrip deal was found by Cheapflights users on 12/17. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/316:11 amSEA - ORD
1 stop13h 13mSpirit Airlines
Sun 1/59:54 pmORD - SEA
2 stops28h 16mSpirit Airlines
Deal found 12/17$375
This Southwest deal was found by Cheapflights users on 12/17. 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 12/3110:05 amSEA - MDW
Nonstop4h 05mSouthwest
Sun 1/53:40 pmMDW - SEA
1 stop10h 15mSouthwest
Deal found 12/17$408
This FlightHub deal was found by Cheapflights users on 12/16. 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.
Wed 12/188:25 pmSEA - MDW
1 stop11h 24mFrontier
Mon 12/308:41 pmMDW - SEA
1 stop23h 20mFrontier
Deal found 12/16$424
This Delta deal was found by Cheapflights users on 12/18. 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.
Tue 12/316:10 amSEA - MDW
1 stop9h 01mDelta
Tue 1/76:00 amMDW - SEA
1 stop8h 31mDelta
Deal found 12/18$436
This Sun Country Air deal was found by Cheapflights users on 12/17. 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 Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/246:34 pmSEA - ORD
1 stop12h 29mSun Country Air
Sun 12/298:03 pmORD - SEA
1 stop28h 40mSun Country Air
Deal found 12/17$548
This Southwest deal was found by Cheapflights users on 12/17. 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 12/3110:40 amSEA - ORD
1 stop9h 55mSouthwest
Wed 1/112:15 pmORD - SEA
2 stops12h 00mSouthwest
Deal found 12/17$571

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 December 18, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Mon 1/27

9:40 am-7:28 pm

1 stop7h 48m

Chicago O'Hare Intl

Thu 1/30

7:45 am-10:36 am

Nonstop4h 51m

$180

SeattleChicago

SEA - MDW

SEAMDW

Seattle/Tacoma Intl

Mon 1/27

3:15 pm-12:17 am

1 stop7h 02m

Chicago Midway

Thu 1/30

2:56 pm-8:50 am

2 stops19h 54m

$182

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Fri 2/28

11:59 pm-5:53 am

Nonstop3h 54m

Chicago O'Hare Intl

Tue 3/4

8:45 am-3:52 pm

1 stop9h 07m

$183

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Fri 2/28

1:33 pm-7:44 pm

Nonstop4h 11m

Chicago O'Hare Intl

Fri 3/7

8:25 pm-11:08 pm

Nonstop4h 43m

$187

SeattleChicago

SEA - MDW

SEAMDW

Seattle/Tacoma Intl

Fri 1/17

11:30 am-5:35 pm

Nonstop4h 05m

Chicago Midway

Mon 1/20

5:35 pm-8:10 pm

Nonstop4h 35m

$188

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Wed 1/8

6:10 pm-12:11 am

Nonstop4h 01m

Chicago O'Hare Intl

Wed 1/15

7:15 am-10:11 am

Nonstop4h 56m

$189

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Mon 1/27

9:40 am-7:28 pm

1 stop7h 48m

Chicago O'Hare Intl

Thu 1/30

3:56 pm-8:50 am

2 stops18h 54m

$191

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Fri 1/31

6:00 pm-11:59 pm

Nonstop3h 59m

Chicago O'Hare Intl

Fri 2/7

5:28 pm-8:11 pm

Nonstop4h 43m

$193

SeattleChicago

SEA - MDW

SEAMDW

Seattle/Tacoma Intl

Sat 2/1

6:00 am-4:12 pm

1 stop8h 12m

Chicago Midway

Sun 2/2

10:19 am-4:54 pm

1 stop8h 35m

$198

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Wed 1/8

6:11 am-10:57 pm

2 stops14h 46m

Chicago O'Hare Intl

Wed 1/15

11:10 am-12:19 am

2 stops15h 09m

$200

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/18

Showing 1-10 of 28 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 December.
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
CheapfaremartPrice Accuracy-Trust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
KAYAKPrice Accuracy3 starsTrust Score*3 stars
CheapOairPrice Accuracy2 starsTrust Score*2 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 December 13, 2024.

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, September is the cheapest month in which you can book a flight from Seattle to Chicago (average of $232). Flying from Seattle to Chicago in June is currently the most expensive (average of $308). 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 December 18, 2024.

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 December 18, 2024.

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 (2 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 December 18, 2024.
Read through reviews of airlines operating flights from Seattle to Chicago, such as Frontier, United Airlines and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,848 reviews

Food

7.2

Entertainment

7.7

Crew

8.7

Overall

8.1

Boarding

8.2

Comfort

8.1

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
4,848 reviews
Southwest
8.1
Very good
4,848 reviews

Food

7.2

Entertainment

7.7

Crew

8.7

Overall

8.1

Boarding

8.2

Comfort

8.1

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
9,552 reviews
Southwest
8.1
Very good
4,848 reviews

Food

7.2

Entertainment

7.7

Crew

8.7

Overall

8.1

Boarding

8.2

Comfort

8.1

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
8,604 reviews
Southwest
8.1
Very good
4,848 reviews

Food

7.2

Entertainment

7.7

Crew

8.7

Overall

8.1

Boarding

8.2

Comfort

8.1

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.

JetBlue
7.4
Good
3,279 reviews
Southwest
8.1
Very good
4,848 reviews

Food

7.2

Entertainment

7.7

Crew

8.7

Overall

8.1

Boarding

8.2

Comfort

8.1

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
9,059 reviews
Southwest
8.1
Very good
4,848 reviews

Food

7.2

Entertainment

7.7

Crew

8.7

Overall

8.1

Boarding

8.2

Comfort

8.1

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 11 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 Frontier. Our recent data shows that you can find tickets from as low as $182 on this airline. Additional options worth looking into are United Airlines and American Airlines, starting at $183 and $188 round-trip. Users have found that Frontier is 38% 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. Southwest 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 WestJet (100%), Avianca (94%) or Royal Jordanian (94%) 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 $870, our data indicates the cheapest price to be $98. The most popular route (Seattle/Tacoma Intl - Chicago O'Hare Intl), is priced around $146.

  • 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, September is the cheapest month in which you can book a flight from Seattle to Chicago (average of $232). Flying from Seattle to Chicago in June is currently the most expensive (average of $308). 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

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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 December 18, 2024.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$100Average$443FlexibilityNo cancel feeOn-timeN/A
Spirit AirlinesCheapest$115Average$242FlexibilityNo cancel feeOn-time65%
Alaska AirlinesCheapest$127Average$313FlexibilityNo cancel feeOn-time75%
FrontierCheapest$128Average$257FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$138Average$344FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$152Average$355FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$179Average$398FlexibilityNo cancel feeOn-time63%
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