Cheap flights from Seattle to Chicago

SEA — CHI
1 Feb — 8 Feb1
Return
1 adult
Economy
From?
To?
Wed 1/2
Wed 8/2

The best prices from Seattle/Tacoma Intl to Chicago are usually found in February or January, booked 21 days in advance, depart on a Monday or Wednesday and return on a Friday

How to find the cheapest flight from Seattle (SEA) to Chicago (CHI)

All the information you need to plan the best SEA to CHI flight in 2023: compare Seattle to Chicago flight prices with the expected peak season, weather and rainfall in Chicago.

SEA - CHI

Price

C$ 211 - C$ 528

CHI

Temperature

-5 - 23 °C

CHI

Rainfall

43 - 125 mm

Popular inJuneHigh demand for flights, 31% potential price rise
Cheapest inFebruaryBest time to find cheap flights, 42% potential price drop
Round-trip fromC$ 282From Seattle/Tacoma Intl to Chicago (CHI)
One-way fromC$ 84One-way flight from Seattle/Tacoma Intl to Chicago (CHI)

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

Wednesday 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 22 days before your planned departure. Booking around this time can save you about 13% on the cost of this flight compared to booking a flight leaving this week. We have found prices from C$ 547 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as C$ 632.

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

Due to multiple factors, expect to potentially pay more when booking in June. For low rates, February can be a great choice for travel to Chicago. Flights to Chicago from Seattle in February are about C$ 489 on average during February, but can be found for as low as C$ 210.

When is the cheapest time to fly from Seattle to Chicago (SEA - CHI)?

It’s typically best to fly out from Seattle to Chicago in the evening. Doing so could potentially save you 35% on the flight price compared to flying in the morning, which is usually more expensive.

Cheap flights from Seattle to Chicago in January, February 2023

The best prices found for SEA to CHI flights for January, February
9 Feb. - 11 Feb.
SEA

Seattle/Tacoma Intl

ORD

Chicago O'Hare Intl

1 stop

11h 13m
ORD

Chicago O'Hare Intl

SEA

Seattle/Tacoma Intl

1 stop

15h 16m
C$ 205

Spirit Airlines

Deal found 26/1

23 Feb. - 28 Feb.
SEA

Seattle/Tacoma Intl

ORD

Chicago O'Hare Intl

1 stop

14h 43m
ORD

Chicago O'Hare Intl

SEA

Seattle/Tacoma Intl

1 stop

9h 31m
C$ 213

Spirit Airlines

Deal found 26/1

22 Feb. - 23 Feb.
SEA

Seattle/Tacoma Intl

ORD

Chicago O'Hare Intl

1 stop

8h 01m
ORD

Chicago O'Hare Intl

SEA

Seattle/Tacoma Intl

1 stop

9h 31m
C$ 235

Spirit Airlines

Deal found 26/1

Seattle to Chicago 2023 flight deals

Cheap flights to Chicago from Seattle found for this year
9 Feb. - 11 Feb.
SEA

Seattle/Tacoma Intl

ORD

Chicago O'Hare Intl

1 stop

11h 13m
ORD

Chicago O'Hare Intl

SEA

Seattle/Tacoma Intl

1 stop

15h 16m
C$ 205

Spirit Airlines

Deal found 26/1

23 Feb. - 28 Feb.
SEA

Seattle/Tacoma Intl

ORD

Chicago O'Hare Intl

1 stop

14h 43m
ORD

Chicago O'Hare Intl

SEA

Seattle/Tacoma Intl

1 stop

9h 31m
C$ 213

Spirit Airlines

Deal found 26/1

22 Feb. - 23 Feb.
SEA

Seattle/Tacoma Intl

ORD

Chicago O'Hare Intl

1 stop

8h 01m
ORD

Chicago O'Hare Intl

SEA

Seattle/Tacoma Intl

1 stop

9h 31m
C$ 235

Spirit Airlines

Deal found 26/1

Cheap Alaska Airlines flights from Seattle to Chicago

28 Feb. - 1 Mar.
SEA

Seattle/Tacoma Intl

ORD

Chicago O'Hare Intl

Nonstop

4h 01m
ORD

Chicago O'Hare Intl

SEA

Seattle/Tacoma Intl

Nonstop

4h 40m
C$ 258

Alaska Airlines

Deal found 25/1

12 Feb. - 18 Feb.
SEA

Seattle/Tacoma Intl

ORD

Chicago O'Hare Intl

Nonstop

3h 52m
ORD

Chicago O'Hare Intl

SEA

Seattle/Tacoma Intl

Nonstop

4h 40m
C$ 278

Alaska Airlines

Deal found 26/1

2 Mar. - 6 Mar.
SEA

Seattle/Tacoma Intl

ORD

Chicago O'Hare Intl

Nonstop

4h 02m
ORD

Chicago O'Hare Intl

SEA

Seattle/Tacoma Intl

1 stop

21h 33m
C$ 337

Alaska Airlines

Deal found 25/1

Cheap Delta flights from Seattle to Chicago

16 Feb. - 20 Feb.
SEA

Seattle/Tacoma Intl

ORD

Chicago O'Hare Intl

Nonstop

3h 59m
ORD

Chicago O'Hare Intl

SEA

Seattle/Tacoma Intl

Nonstop

4h 50m
C$ 265

Delta

Deal found 26/1

16 Feb. - 18 Feb.
SEA

Seattle/Tacoma Intl

ORD

Chicago O'Hare Intl

Nonstop

3h 59m
ORD

Chicago O'Hare Intl

SEA

Seattle/Tacoma Intl

Nonstop

4h 50m
C$ 305

Delta

Deal found 26/1

16 Feb. - 26 Feb.
SEA

Seattle/Tacoma Intl

ORD

Chicago O'Hare Intl

Nonstop

3h 56m
ORD

Chicago O'Hare Intl

SEA

Seattle/Tacoma Intl

Nonstop

4h 50m
C$ 318

Delta

Deal found 25/1

Direct flights to Chicago from Seattle

Save time with Seattle to Chicago direct flight deals
28 Feb. - 1 Mar.
SEA

Seattle/Tacoma Intl

ORD

Chicago O'Hare Intl

Nonstop

4h 01m
ORD

Chicago O'Hare Intl

SEA

Seattle/Tacoma Intl

Nonstop

4h 40m
C$ 258

Alaska Airlines

Deal found 25/1

16 Feb. - 20 Feb.
SEA

Seattle/Tacoma Intl

ORD

Chicago O'Hare Intl

Nonstop

3h 59m
ORD

Chicago O'Hare Intl

SEA

Seattle/Tacoma Intl

Nonstop

4h 50m
C$ 265

Delta

Deal found 26/1

12 Feb. - 18 Feb.
SEA

Seattle/Tacoma Intl

ORD

Chicago O'Hare Intl

Nonstop

3h 52m
ORD

Chicago O'Hare Intl

SEA

Seattle/Tacoma Intl

Nonstop

4h 40m
C$ 278

Alaska Airlines

Deal found 26/1

Last minute flights from Seattle to Chicago

Late deals on round-trip flights to Chicago from Seattle, departing today and this week
4 Feb. - 6 Feb.
SEA

Seattle/Tacoma Intl

ORD

Chicago O'Hare Intl

1 stop

7h 14m
ORD

Chicago O'Hare Intl

SEA

Seattle/Tacoma Intl

1 stop

18h 30m
C$ 365

Spirit Airlines

Deal found 26/1

6 Feb. - 11 Feb.
SEA

Seattle/Tacoma Intl

ORD

Chicago O'Hare Intl

Nonstop

3h 55m
ORD

Chicago O'Hare Intl

SEA

Seattle/Tacoma Intl

Nonstop

4h 41m
C$ 382

United Airlines

Deal found 26/1

6 Feb. - 11 Feb.
SEA

Seattle/Tacoma Intl

ORD

Chicago O'Hare Intl

1 stop

6h 03m
ORD

Chicago O'Hare Intl

SEA

Seattle/Tacoma Intl

Nonstop

4h 51m
C$ 396

Alaska Airlines

Deal found 26/1

One-way flights to Chicago from Seattle

The cheapest one-way flights from Seattle to Chicago
29 Mar.
SEA

Seattle/Tacoma Intl

ORD

Chicago O'Hare Intl

1 stop

15h 50m
C$ 84

Spirit Airlines

Deal found 25/1

2 Mar.
SEA

Seattle/Tacoma Intl

ORD

Chicago O'Hare Intl

Nonstop

4h 02m
C$ 132

Alaska Airlines

Deal found 26/1

11 Feb.
SEA

Seattle/Tacoma Intl

ORD

Chicago O'Hare Intl

1 stop

7h 15m
C$ 139

United Airlines

Deal found 27/1

Related info for your journey

Useful info, stats and facts about Seattle to Chicago flights.

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 19 outbound flights to Chicago per day from 5 airlines. Seattle/Tacoma Intl is conveniently located just 18.4 km from Seattle’s city centre.

Which airlines flying from Seattle/Tacoma Intl to Chicago have flexible cancellations due to COVID-19?

Some of the carriers operating flights from Seattle/Tacoma Intl to Chicago that may be offering flexible cancellation policies are Alaska Airlines, Endeavor Airlines, and United Airlines. Our site will let you filter for all airlines offering greater flexibility due to COVID-19.

Can I find flights from Seattle to Chicago for under C$ 200 on Cheapflights?

Yes, there are multiple flights from Seattle to Chicago for under C$ 200. The cheapest flight booked recently is on Spirit Airlines for just C$ 183, but on average you can expect to pay C$ 282.

Are there direct flights from Seattle to Chicago for under C$ 300 on Cheapflights?

Cheapflights has 20 direct flights from Seattle to Chicago under C$ 300. A good price for a direct flight from Seattle to Chicago is less than C$ 356.

Are there last-minute flights available from Seattle to Chicago for under C$ 400?

There are currently 20+ open flights from Seattle to Chicago within the next 7 days for less than C$ 400.

What days are direct flights available from Seattle to Chicago?

Direct flights can be found on the following days: Sunday, Monday, Tuesday, Wednesday, Friday, Saturday.

How many flights depart from Seattle to Chicago on average per day?

On average 12 flights depart from Seattle to Chicago per day.
Morning (6am - Midday) - 50% of flight departures
Evening (6pm - Midnight) - 50% of flight departures

How long is the flight from Seattle to Chicago?

A quick flight from Seattle to Chicago can take about 3h 59m. Spirit Airlines provides one of the quickest options available for as low as C$ 183. There are 2776 km between Seattle and Chicago. This flight may include one or multiple stops.

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

Flying on Spirit Airlines is currently your cheapest option to Chicago, with prices starting at C$ 183. Additional round-trip tickets that might be worth considering are offered by Alaska Airlines and Delta, with the lowest prices starting at C$ 258 and C$ 265, respectively. Spirit Airlines is 62% 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 Spirit Airlines (C$ 84), Alaska Airlines (C$ 132), and United Airlines (C$ 139).

What are the most popular airlines that fly from Seattle to Chicago?

Before booking your flight from Seattle to Chicago check out the most popular airlines for this route: Endeavor Airlines, American Airlines or Alaska Airlines.

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: Austrian Airlines (87%), SWISS (83%), Brussels Airlines (83%).

What are the cheapest flights from Seattle to Chicago?

On average you can expect to pay C$ 1,065 for a flight from Seattle to Chicago. The cheapest flight overall is C$ 232 while the most popular route, (Seattle/Tacoma Intl - Chicago O'Hare Intl) is currently priced at C$ 398.

Top 3 airlines flying from Seattle to Chicago

The chart below displays the airlines Cheapflights users travelling from Seattle to Chicago choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-timeCOVID-19 safety
Alaska AirlinesCheapestC$ 216AverageC$ 337FlexibilityNo cancel feeOn-time75%COVID-19 safety
Search Alaska Airlines flights
United AirlinesCheapestC$ 252AverageC$ 327FlexibilityNo cancel feeOn-time69%COVID-19 safety
Search United Airlines flights
Endeavor AirlinesCheapestC$ 576AverageC$ 719FlexibilityNo cancel feeOn-timeN/ACOVID-19 safety
Search Endeavor Airlines flights

Hourly flight availability from Seattle to Chicago

See what time of day planes typically take off from Seattle to Chicago
5%of flight departuresEarly morningMidnight to 6 am
74%of flight departuresMorning6 am to noon
9%of flight departuresAfternoonNoon to 6 pm
12%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

Weekly flight availability from Seattle to Chicago

See how many times per day planes take to the skies headed from Seattle to Chicago
Sunday11daily flights
Monday21daily flights
Tuesday20daily flights
Wednesday21daily flights
Thursday27daily flights
Friday21daily flights
Saturday14daily flights
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.