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Cheap flights from Seattle to Chicago from C$ 135

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 2/3. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CHI
22 Jan — 29 Jan1
1 adult

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 Friday and return on a Friday

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 17 January 2025.

Round-trip from

C$ 256

One-way from

C$ 135

Popular in

December

Cheapest in

February

Average price

C$ 355
Delta
  • Delta
  • 20/2-4/3
  • Nonstop
  • 8h 59m total
  • Seattle to Chicago
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Alaska Airlines
  • Alaska Airlines
  • 2/3
  • Nonstop
  • 3h 54m total
  • Seattle to Chicago
Search Deals
High demand for flights, 6% potential price rise
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Best time to find cheap flights, 2% potential price drop
Search Deals
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 17 January 2025.

Thu 20/25:55 p.m.SEA - ORD
Nonstop4h 01mDelta
Tue 4/37:00 a.m.ORD - SEA
Nonstop4h 58mDelta
Deal found 16/1C$ 256
Wed 12/311:59 p.m.SEA - ORD
Nonstop4h 00mAmerican Airlines
Wed 19/38:25 p.m.ORD - SEA
Nonstop4h 42mAmerican Airlines
Deal found 15/1C$ 259
Tue 18/211:59 p.m.SEA - ORD
Nonstop3h 54mUnited Airlines
Fri 21/28:45 a.m.ORD - SEA
1 stop9h 03mUnited Airlines
Deal found 16/1C$ 264
Sat 8/29:59 p.m.SEA - ORD
1 stop13h 08mAlaska Airlines
Sat 15/25:56 p.m.ORD - SEA
Nonstop4h 41mAlaska Airlines
Deal found 15/1C$ 270
Thu 1/56:00 a.m.SEA - ORD
1 stop6h 26mMultiple Airlines
Mon 5/56:45 a.m.ORD - SEA
1 stop18h 25mMultiple Airlines
Deal found 16/1C$ 322
Wed 2/46:40 a.m.SEA - ORD
2 stops13h 55mSouthwest
Mon 7/42:50 p.m.ORD - SEA
1 stop11h 40mSouthwest
Deal found 16/1C$ 400
Thu 3/711:59 p.m.SEA - ORD
1 stop17h 12mSun Country Air
Sun 6/78:10 p.m.ORD - SEA
1 stop28h 40mSun Country Air
Deal found 16/1C$ 496

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 629,999 searches. Data last updated 17 January 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Thu 20/2

11:59 p.m.-5:53 a.m.

Nonstop3h 54m

Chicago O'Hare Intl

Tue 25/2

5:54 p.m.-8:35 p.m.

Nonstop4h 41m

C$ 256

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Sat 8/2

7:25 a.m.-1:30 p.m.

Nonstop4h 05m

Chicago O'Hare Intl

Sat 15/2

7:00 a.m.-9:55 a.m.

Nonstop4h 55m

C$ 257

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Wed 12/3

11:59 p.m.-5:59 a.m.

Nonstop4h 00m

Chicago O'Hare Intl

Wed 19/3

8:25 p.m.-11:07 p.m.

Nonstop4h 42m

C$ 259

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Tue 18/2

11:59 p.m.-5:53 a.m.

Nonstop3h 54m

Chicago O'Hare Intl

Fri 21/2

8:45 a.m.-3:48 p.m.

1 stop9h 03m

C$ 264

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Thu 1/5

6:00 a.m.-2:26 p.m.

1 stop6h 26m

Chicago O'Hare Intl

Mon 5/5

6:45 a.m.-11:10 p.m.

1 stop18h 25m

C$ 322

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Wed 2/4

6:40 a.m.-10:35 p.m.

2 stops13h 55m

Chicago O'Hare Intl

Mon 7/4

2:50 p.m.-12:30 a.m.

1 stop11h 40m

C$ 400

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Thu 3/7

11:59 p.m.-7:11 p.m.

1 stop17h 12m

Chicago O'Hare Intl

Sun 6/7

8:10 p.m.-10:50 p.m.

1 stop28h 40m

C$ 496

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Sun 2/3

11:59 p.m.-5:53 a.m.

Nonstop3h 54m

C$ 135

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Thu 20/3

6:15 a.m.-5:10 p.m.

1 stop8h 55m

C$ 142

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Tue 18/2

5:38 p.m.-5:28 a.m.

1 stop9h 50m

C$ 168

Flights are sorted by cheapest round-trip flights first.

Deals found on 16/1

Showing 1-10 of 14 results
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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 10 January 2025.

To ensure you get the cheapest price possible for a flight from Seattle to Chicago, you should look to book at least 26 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, January is the cheapest month in which you can book a flight from Seattle to Chicago (average of C$ 261). Flying from Seattle to Chicago in March is currently the most expensive (average of C$ 355). 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 17 January 2025.

It’s typically best to fly out from Seattle to Chicago in the afternoon. Doing so could potentially save you 33% on the flight price compared to flying at noon, which is usually more expensive.

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 17 January 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 43.0 - 125.0 mm per month. August is typically the wettest month, when rainfall can reach 125.0 mm. January is typically the driest time to visit Chicago when rainfall is around 43.0 mm.

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 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).

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 17 January 2025.
Read reviews from past customers who have flown Alaska Airlines, Delta and United Airlines from Seattle to Chicago. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,659 reviews
Check prices

Boarding

8.2

Entertainment

7.7

Comfort

8.1

Crew

8.7

Food

7.2

Overall

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

Boarding

8.2

Entertainment

7.7

Comfort

8.1

Crew

8.7

Food

7.2

Overall

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
9,681 reviews
Southwest
8.1
Very good
4,659 reviews
Check prices

Boarding

8.2

Entertainment

7.7

Comfort

8.1

Crew

8.7

Food

7.2

Overall

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
8,511 reviews
Southwest
8.1
Very good
4,659 reviews
Check prices

Boarding

8.2

Entertainment

7.7

Comfort

8.1

Crew

8.7

Food

7.2

Overall

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
8,964 reviews
Southwest
8.1
Very good
4,659 reviews
Check prices

Boarding

8.2

Entertainment

7.7

Comfort

8.1

Crew

8.7

Food

7.2

Overall

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.

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

Boarding

8.2

Entertainment

7.7

Comfort

8.1

Crew

8.7

Food

7.2

Overall

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?

    Most people fly from Seattle/Tacoma Intl (SEA) if they book a flight from Seattle to Chicago. On average, Seattle/Tacoma Intl has 24 outbound flights to Chicago per day from 2 airlines. Seattle/Tacoma Intl is conveniently located just 18.4 km from Seattle’s city centre.

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

    Flying on Delta is currently your cheapest option to Chicago, with prices starting at C$ 256. Additional round-trip tickets that might be worth considering are offered by American Airlines and United Airlines, with the lowest prices starting at C$ 259 and C$ 264, respectively. Delta is 40% cheaper than the average price of flights available within the next 90 days to this destination.

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

    The cheapest airlines for a one-way flight from Seattle to Chicago are Alaska Airlines (C$ 135), United Airlines (C$ 142), and Spirit Airlines (C$ 168).

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Seattle to Chicago on time: Royal Jordanian (100%), Iberia (92%), Singapore Airlines (91%).

  • What are the cheapest flights from Seattle to Chicago?

    On average you can expect to pay C$ 850 for a flight from Seattle to Chicago. The cheapest flight overall is C$ 212 while the most popular route, (Seattle/Tacoma Intl - Chicago O'Hare Intl) is currently priced at C$ 280.

  • 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, January is the cheapest month in which you can book a flight from Seattle to Chicago (average of C$ 261). Flying from Seattle to Chicago in March is currently the most expensive (average of C$ 355). 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.
Seattle to O'Hare Intl flights

Top 2 airlines flying from Seattle to Chicago

Discover the top 2 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 629,999 searches. Data last updated 17 January 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapestC$ 121AverageC$ 298FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Alaska AirlinesCheapestC$ 182AverageC$ 345FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Seattle to Chicago?

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Why should you use Cheapflights to find cheap flight tickets from Seattle to Chicago?

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Can Cheapflights find flights from Seattle to Chicago with no change fees?

Yes, we can. To see specific flights from Seattle to Chicago with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Seattle to Chicago become cheaper?

Yes! Start tracking prices for Seattle to Chicago flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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