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

Flying on Alaska Airlines is currently your cheapest option to Chicago, with prices starting at C$ 246. Additional round-trip tickets that might be worth considering are offered by United Airlines and Delta, with the lowest prices starting at C$ 249 and C$ 251, respectively. Alaska Airlines is 42% 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 Delta (C$ 121), Alaska Airlines (C$ 135), and United Airlines (C$ 141).

What are the cheapest flights from Seattle to Chicago?

On average you can expect to pay C$ 837 for a flight from Seattle to Chicago. The cheapest flight overall is C$ 132 while the most popular route, (Seattle/Tacoma Intl - Chicago O'Hare Intl) is currently priced at C$ 263.

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%), United Airlines (94%), SWISS (93%).

What is the cheapest day to fly round-trip from Seattle to Chicago?

Monday flights are found to be more expensive to fly from Seattle to Chicago. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Chicago.

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

To save on the cost of your flight from Seattle to Chicago, book at least 27 days before your planned departure. Booking around this time can save you about 130% on the cost of this flight compared to booking a flight leaving this week. We have found prices from C$ 517 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as C$ 851.

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

Due to multiple factors, expect to potentially pay more when booking in December. For low rates, January can be a great choice for travel to Chicago. Flights to Chicago from Seattle in January are about C$ 431 on average during January, but can be found for as low as C$ 166.

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 32 outbound flights to Chicago per day from 2 airlines. Seattle/Tacoma Intl is conveniently located just 18.4 km from Seattle’s city centre.

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.

C$ 121+ Flights from Seattle to Chicago

The best prices from Seattle/Tacoma Intl to Chicago are usually found in January or September, booked 73 days in advance, depart on a Friday or Thursday and return on a Tuesday

Cheap flight deals from Seattle to Chicago

Round-trip from	C$ 246
One-way from	C$ 121
Popular in	December
Cheapest in	January
Average price	C$ 382
Good round-trip deal	C$ 480 or less
Good one-way deal	C$ 226 or less

Alaska Airlines
2/4-7/4
Nonstop
8h 48m total
Seattle to Chicago

Search Deals

Delta
19/3
Nonstop
4h 09m total
Seattle to Chicago

Search Deals

Highest demand for flights based on searches. 2% potential increase in price (C$ 18 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (C$ 15 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 20 February 2025.

Wed 2/411:36 p.m.SEA - ORD

Nonstop4h 04mAlaska Airlines

Mon 7/47:16 p.m.ORD - SEA

Nonstop4h 44mAlaska Airlines

Deal found 20/2C$ 246

Tue 11/36:15 a.m.SEA - ORD

1 stop8h 43mUnited Airlines

Wed 12/38:09 p.m.ORD - SEA

Nonstop4h 44mUnited Airlines

Deal found 18/2C$ 249

Thu 20/312:49 a.m.SEA - ORD

1 stop8h 41mDelta

Sat 29/311:13 a.m.ORD - SEA

1 stop9h 46mDelta

Deal found 20/2C$ 251

Sat 24/56:00 a.m.SEA - ORD

1 stop16h 08mFrontier

Wed 28/55:35 a.m.ORD - SEA

1 stop21h 08mFrontier

Deal found 19/2C$ 315

Thu 6/311:46 a.m.SEA - ORD

Nonstop4h 14mHawaiian Airlines

Sun 9/37:45 a.m.ORD - SEA

Nonstop4h 43mHawaiian Airlines

Deal found 20/2C$ 325

Wed 9/76:40 p.m.SEA - ORD

1 stop22h 31mSun Country Air

Fri 11/78:10 p.m.ORD - SEA

1 stop28h 40mSun Country Air

Deal found 19/2C$ 433

Tue 15/45:00 a.m.SEA - ORD

1 stop7h 00mSouthwest

Tue 22/42:50 p.m.ORD - SEA

2 stops10h 40mSouthwest

Deal found 19/2C$ 466

Thu 13/311:59 p.m.SEA - ORD

Nonstop4h 00mAmerican Airlines

Mon 17/38:25 p.m.ORD - SEA

Nonstop4h 42mAmerican Airlines

Deal found 19/2C$ 514

Best flights from Seattle to Chicago
Discover carefully curated flight deals from Seattle to Chicago that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 20 February 2025.

Wed 2/411:36 p.m.SEA - ORD

Nonstop4h 04mAlaska Airlines

Mon 7/47:16 p.m.ORD - SEA

Nonstop4h 44mAlaska Airlines

Deal found 20/2C$ 246

Tue 11/36:15 a.m.SEA - ORD

1 stop8h 43mUnited Airlines

Wed 12/38:09 p.m.ORD - SEA

Nonstop4h 44mUnited Airlines

Deal found 18/2C$ 249

Thu 20/312:49 a.m.SEA - ORD

1 stop8h 41mDelta

Sat 29/311:13 a.m.ORD - SEA

1 stop9h 46mDelta

Deal found 20/2C$ 251

Sat 24/56:00 a.m.SEA - ORD

1 stop16h 08mFrontier

Wed 28/55:35 a.m.ORD - SEA

1 stop21h 08mFrontier

Deal found 19/2C$ 315

Thu 6/311:46 a.m.SEA - ORD

Nonstop4h 14mHawaiian Airlines

Sun 9/37:45 a.m.ORD - SEA

Nonstop4h 43mHawaiian Airlines

Deal found 20/2C$ 325

Wed 9/76:40 p.m.SEA - ORD

1 stop22h 31mSun Country Air

Fri 11/78:10 p.m.ORD - SEA

1 stop28h 40mSun Country Air

Deal found 19/2C$ 433

Tue 15/45:00 a.m.SEA - ORD

1 stop7h 00mSouthwest

Tue 22/42:50 p.m.ORD - SEA

2 stops10h 40mSouthwest

Deal found 19/2C$ 466

Thu 13/311:59 p.m.SEA - ORD

Nonstop4h 00mAmerican Airlines

Mon 17/38:25 p.m.ORD - SEA

Nonstop4h 42mAmerican Airlines

Deal found 19/2C$ 514

Direct flights from Seattle to Chicago
Explore direct flight options from Seattle to Chicago based on user searches, and compare prices and availability for your desired travel dates. Data last updated 20 February 2025.

Wed 2/411:36 p.m.SEA - ORD

Nonstop4h 04mAlaska Airlines

Mon 7/47:16 p.m.ORD - SEA

Nonstop4h 44mAlaska Airlines

Deal found 20/2C$ 246

Fri 14/311:59 p.m.SEA - ORD

Nonstop3h 54mUnited Airlines

Mon 31/34:19 p.m.ORD - SEA

Nonstop4h 42mUnited Airlines

Deal found 19/2C$ 260

Mon 17/35:55 p.m.SEA - ORD

Nonstop3h 58mDelta

Wed 26/37:30 a.m.ORD - SEA

Nonstop4h 49mDelta

Deal found 19/2C$ 266

Thu 6/311:46 a.m.SEA - ORD

Nonstop4h 14mHawaiian Airlines

Sun 9/37:45 a.m.ORD - SEA

Nonstop4h 43mHawaiian Airlines

Deal found 20/2C$ 325

Thu 13/311:59 p.m.SEA - ORD

Nonstop4h 00mAmerican Airlines

Mon 17/38:25 p.m.ORD - SEA

Nonstop4h 42mAmerican Airlines

Deal found 19/2C$ 514

Last-minute flights from Seattle to Chicago
Discover last-minute flight deals from Seattle to Chicago. Data last updated 20 February 2025 and is based on user searches.

Tue 25/21:40 p.m.SEA - ORD

1 stop7h 25mSouthwest

Thu 27/211:25 a.m.ORD - SEA

2 stops14h 50mSouthwest

Deal found 18/2C$ 600

Wed 26/25:55 p.m.SEA - ORD

Nonstop4h 01mDelta

Wed 26/37:30 a.m.ORD - SEA

Nonstop4h 49mDelta

Deal found 19/2C$ 422

Fri 28/24:50 p.m.SEA - ORD

1 stop10h 03mUnited Airlines

Sat 8/37:35 p.m.ORD - SEA

Nonstop4h 44mUnited Airlines

Deal found 19/2C$ 482

Fri 28/211:46 a.m.SEA - ORD

Nonstop4h 14mHawaiian Airlines

Sat 1/37:45 a.m.ORD - SEA

Nonstop4h 43mHawaiian Airlines

Deal found 19/2C$ 612

Sat 1/38:55 a.m.SEA - ORD

Nonstop4h 14mAlaska Airlines

Mon 10/34:05 p.m.ORD - SEA

1 stop6h 32mAlaska Airlines

Deal found 19/2C$ 516

Thu 6/37:00 a.m.SEA - ORD

1 stop7h 58mAlaska Airlines

Wed 12/37:45 a.m.ORD - SEA

Nonstop4h 43mAlaska Airlines

Deal found 19/2C$ 297

Thu 6/311:46 a.m.SEA - ORD

Nonstop4h 14mHawaiian Airlines

Sun 9/37:45 a.m.ORD - SEA

Nonstop4h 43mHawaiian Airlines

Deal found 20/2C$ 325

Tue 11/36:15 a.m.SEA - ORD

1 stop8h 43mUnited Airlines

Wed 12/38:09 p.m.ORD - SEA

Nonstop4h 44mUnited Airlines

Deal found 18/2C$ 249

Thu 13/311:59 p.m.SEA - ORD

Nonstop4h 00mAmerican Airlines

Mon 17/38:25 p.m.ORD - SEA

Nonstop4h 42mAmerican Airlines

Deal found 19/2C$ 514

Thu 20/312:49 a.m.SEA - ORD

1 stop8h 41mDelta

Sat 29/311:13 a.m.ORD - SEA

1 stop9h 46mDelta

Deal found 20/2C$ 251

Mon 24/35:00 a.m.SEA - ORD

1 stop7h 00mSouthwest

Wed 26/36:00 a.m.ORD - SEA

2 stops11h 00mSouthwest

Deal found 20/2C$ 543

One-way flights from Seattle to Chicago
Search for one-way flight options from Seattle to Chicago. Find affordable one-way fares based on user searches. Data last updated 20 February 2025.

Wed 19/37:15 a.m.SEA - ORD

Nonstop4h 09mDelta

Deal found 19/2C$ 121

Sat 19/46:02 p.m.SEA - ORD

Nonstop3h 57mAlaska Airlines

Deal found 20/2C$ 135

Sat 12/42:18 p.m.SEA - ORD

Nonstop4h 07mUnited Airlines

Deal found 19/2C$ 141

Thu 6/311:59 p.m.SEA - ORD

Nonstop3h 54mHawaiian Airlines

Deal found 20/2C$ 163

Sat 1/35:38 p.m.SEA - ORD

1 stop9h 50mSpirit Airlines

Deal found 18/2C$ 175

Fri 6/67:50 p.m.SEA - ORD

1 stop11h 35mSouthwest

Deal found 20/2C$ 185

Thu 5/611:59 p.m.SEA - ORD

1 stop17h 12mSun Country Air

Deal found 20/2C$ 203

Fri 28/212:25 a.m.SEA - ORD

1 stop7h 04mAmerican Airlines

Deal found 18/2C$ 324

Sun 13/711:59 p.m.SEA - ORD

2 stops36h 01mMultiple Airlines

Deal found 19/2C$ 435

Find flights from Seattle to Chicago within your budget

Fly from

Fly to

Route

Depart

Return

Price

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Wed 2/4

11:36 p.m.-5:40 a.m.

Nonstop4h 04m

Chicago O'Hare Intl

Mon 7/4

7:16 p.m.-10:00 p.m.

Nonstop4h 44m

C$ 246

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Tue 11/3

6:15 a.m.-4:58 p.m.

1 stop8h 43m

Chicago O'Hare Intl

Wed 12/3

8:09 p.m.-10:53 p.m.

Nonstop4h 44m

C$ 249

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Thu 20/3

12:49 a.m.-11:30 a.m.

1 stop8h 41m

Chicago O'Hare Intl

Sat 29/3

11:13 a.m.-6:59 p.m.

1 stop9h 46m

C$ 251

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Sat 24/5

6:00 a.m.-12:08 a.m.

1 stop16h 08m

Chicago O'Hare Intl

Wed 28/5

5:35 a.m.-12:43 a.m.

1 stop21h 08m

C$ 315

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Thu 6/3

11:46 a.m.-6:00 p.m.

Nonstop4h 14m

Chicago O'Hare Intl

Sun 9/3

7:45 a.m.-10:28 a.m.

Nonstop4h 43m

C$ 325

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Wed 9/7

6:40 p.m.-7:11 p.m.

1 stop22h 31m

Chicago O'Hare Intl

Fri 11/7

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

1 stop28h 40m

C$ 433

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Tue 15/4

5:00 a.m.-2:00 p.m.

1 stop7h 00m

Chicago O'Hare Intl

Tue 22/4

2:50 p.m.-11:30 p.m.

2 stops10h 40m

C$ 466

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Thu 13/3

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

Nonstop4h 00m

Chicago O'Hare Intl

Mon 17/3

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

Nonstop4h 42m

C$ 514

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Wed 19/3

7:15 a.m.-1:24 p.m.

Nonstop4h 09m

C$ 121

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Sat 19/4

6:02 p.m.-11:59 p.m.

Nonstop3h 57m

C$ 135

Flights are sorted by cheapest round-trip flights first.

Deals found on 19/2

Showing 1-10 of 17 results

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?

To ensure you get the cheapest price possible for a flight from Seattle to Chicago, you should look to book at least 73 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?

It’s typically best to fly out from Seattle to Chicago in the afternoon. Doing so could potentially save you 74% 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?

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

Weekly flight availability from Seattle to Chicago

The most flights from SEA to CHI are scheduled on a Thursday (40 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (23 on average).

Rainfall in Chicago 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

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

Read reviews from past customers who have flown Southwest, Alaska Airlines and Delta 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

4,413 reviews

Check prices

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

Check prices

Reviews

1 / 20

2.0

Mediocre

Anonymous,Feb 2025

MCO - STL

Alaska Airlines

8.0

Very good

9,691 reviews

Southwest

8.1

Very good

4,413 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Anonymous,Feb 2025

MCO - STL

Delta

8.0

Very good

8,227 reviews

Southwest

8.1

Very good

4,413 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Anonymous,Feb 2025

MCO - STL

Hawaiian Airlines

7.9

Good

2,317 reviews

Southwest

8.1

Very good

4,413 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Anonymous,Feb 2025

MCO - STL

United Airlines

7.4

Good

8,768 reviews

Southwest

8.1

Very good

4,413 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Anonymous,Feb 2025

MCO - STL

Related info for your journey

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 32 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 Alaska Airlines is currently your cheapest option to Chicago, with prices starting at C$ 246. Additional round-trip tickets that might be worth considering are offered by United Airlines and Delta, with the lowest prices starting at C$ 249 and C$ 251, respectively. Alaska Airlines is 42% 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 Delta (C$ 121), Alaska Airlines (C$ 135), and United Airlines (C$ 141).
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%), United Airlines (94%), SWISS (93%).
What are the cheapest flights from Seattle to Chicago?
On average you can expect to pay C$ 837 for a flight from Seattle to Chicago. The cheapest flight overall is C$ 132 while the most popular route, (Seattle/Tacoma Intl - Chicago O'Hare Intl) is currently priced at C$ 263.
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

Browse thousands of different options on Cheapflights for your next trip

Top 2 airlines flying from Seattle to Chicago

Airline	Cheapest	Average	Flexibility	On-time
Delta	CheapestC$ 120	AverageC$ 517	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights
Alaska Airlines	CheapestC$ 180	AverageC$ 361	FlexibilityNo cancel fee	On-time75%	Search Alaska Airlines flights

Fly with Cheapflights

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

Cheapflights helps you search for flights from Seattle to Chicago via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

Cheapflights simply makes it quick and affordable to book flights from Seattle to Chicago by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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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Cheap flights from Seattle to Chicago from C$ 121

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 19/3. Fares are subject to change and may not be available on all flights or dates of travel.

The best prices from Seattle/Tacoma Intl to Chicago are usually found in January or September, booked 73 days in advance, depart on a Friday or Thursday and return on a Tuesday

Cheap flight deals from Seattle to Chicago

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Seattle to Chicago

Cheapest flights from Seattle to ChicagoExplore 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 20 February 2025.

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 20 February 2025.

Find flights from Seattle to Chicago within your budget

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.

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 14 February 2025.

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

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 20 February 2025.

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 16 February 2025.

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 20 February 2025.

Rainfall in Chicago by month

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

Temperature in Chicago by month

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

Reviews of airlines servicing Chicago

Read reviews from past customers who have flown Southwest, Alaska Airlines and Delta 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.

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?

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

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

What are the most reliable airlines from Seattle to Chicago?

What are the cheapest flights from Seattle to Chicago?

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

How can I find direct flights from Seattle to Chicago?

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

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

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.

Top 2 airlines flying from Seattle to Chicago

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?

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

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

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

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Travel Smart

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 20 February 2025.