Cheap flights from Seattle to Chicago (SEA - CHI)

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The best prices from Seattle/Tacoma Intl to Chicago are usually found in August or July, booked 60 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

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 2021: compare Seattle to Chicago flight prices with the expected peak season, weather and rainfall in Chicago.
SEA - CHI
Price
$138 - $298
CHI
Temperature
23 - 73.4 °F
CHI
Precipitation
1.7 - 4.9 inches

Popular in

December

High demand for flights, 28% potential price rise

Cheapest in

August

Best time to find cheap flights, 36% potential price drop

Round-trip from

$138

From Seattle/Tacoma Intl to Chicago (CHI)

One-way from

$79

One-way flight from Seattle/Tacoma Intl to Chicago (CHI)

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest day to fly round-trip from Seattle to Chicago?

Flying to your destination on a Saturday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to Chicago. Check prices with Cheapflights to find a great deal for your trip.

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

Users have found that booking a flight from Seattle to Chicago at least 57 days early can save you up to 13% on average compared to booking a flight this week. If booking 57 days before your flight isn’t an option for you, users have found flights from Seattle to Chicago for as little as $226 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $247 for flights departing within the next 3 days.

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

The best pricing can be found in the month of August. Prices to Chicago from Seattle average $214. You can even find prices in August for less than $214, as users have found deals to Chicago from as low as $78. The month of December appears to be one of the more expensive times to travel to Chicago from Seattle. Flying in the targeted month can save you up to 39%.

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

It’s typically best to fly out from Seattle to Chicago at noon. Doing so could potentially save you 9% on the flight price compared to flying in the morning, which is usually more expensive.

Cheap flights from Seattle to Chicago in October, November 2021

The best prices found for SEA to CHI flights for October, November
8 Nov - 10 Nov
$69pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
3 Nov - 9 Nov
$76pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
9 Nov - 15 Nov
$85pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl

Seattle/Tacoma Intl to Chicago 2021 flight deals

Cheap flights to Chicago from Seattle found for this year
8 Nov - 10 Nov
$69pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
3 Nov - 9 Nov
$76pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
9 Nov - 15 Nov
$85pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl

Non-stop flights to Chicago from Seattle

Save time with Seattle to Chicago direct flight deals
3 Nov - 6 Nov
$161pp
SEA
Seattle/Tacoma Intl
Major Airline
Non-Stop
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Major Airline
Non-Stop
SEA
Seattle/Tacoma Intl
10 Nov - 14 Nov
$163pp
SEA
Seattle/Tacoma Intl
Alaska Airlines
Non-Stop
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Alaska Airlines
Non-Stop
SEA
Seattle/Tacoma Intl
16 Nov - 1 Dec
$167pp
SEA
Seattle/Tacoma Intl
American Airlines
Non-Stop
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
American Airlines
Non-Stop
SEA
Seattle/Tacoma Intl

Last minute flights from Seattle to Chicago

Late deals on round-trip flights to Chicago from Seattle, departing today and this week
23 Oct - 26 Oct
$86pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
23 Oct - 25 Oct
$102pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
22 Oct - 26 Oct
$103pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl

One-way flights to Chicago from Seattle

The cheapest one-way flights from Seattle to Chicago
8:49 pm - 10:38 am
Frontier
1 Stop
11h 49m
SEA - ORD
Frontier
$79
Kiwi.com
12:10 pm - 3:13 pm
Multiple Airlines
1 Stop
25h 03m
SEA - RFD
Multiple Airlines
$80
FareScan

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Seattle</span> to <span class="emphasized">Chicago</span> flights.

Flight FAQs

From Seattle to Chicago

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 40 outbound flights to Chicago per day. 9 airlines have flights to Chicago from Seattle/Tacoma Intl on a regular basis.

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 Delta, Alaska 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 $100 on Cheapflights?

Yes, there are multiple flights from Seattle to Chicago for under $100. The cheapest flight booked recently is on Spirit Airlines for just $69, but on average you can expect to pay $97.

Are there nonstop flights from Seattle to Chicago for under $200 on Cheapflights?

Cheapflights has at least 20 direct flights from Seattle to Chicago under $200. A good price for a nonstop flight from Seattle to Chicago is less than $177.

Are there last-minute flights available from Seattle to Chicago for under $100?

There are currently 20+ open flights from Seattle to Chicago within the next 7 days for less than $100.

What days are nonstop flights available from Seattle to Chicago?

Nonstop flights are available for this route on the following days: Sunday, Friday, Saturday.

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

On average 8 flights depart from Seattle to Chicago per day.
Morning (6am - Noon) - 88% of flight departures
Evening (6pm - Midnight) - 13% of flight departures

How long is the flight from Seattle to Chicago?

Departing from Seattle to Chicago will take you 15h 30m. Seattle and Chicago are separated by a distance of 1725 mi.

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

Our cheapest airline available from Seattle to Chicago is Spirit Airlines. Our recent data shows that you can find tickets from as low as $69 on this airline. Users have found that Spirit Airlines is 67% cheaper than the other options available to this destination.

What are the cheapest flights from Seattle to Chicago?

Looking for the cheapest flight from Seattle to Chicago? While on average our users pay $434, our data indicates the cheapest price to be $81. The most popular route (Seattle/Tacoma Intl - Chicago O'Hare Intl), is priced around $69.

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 Brussels Airlines (91%), Iberia (90%) or United Airlines (90%) as they are the most reliable in getting you off to your destination on time.

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

When booking a flight from Seattle to Chicago, you may want to consider flying on Major Airline, American Airlines or Alaska Airlines as they are the most popular for this route.

COVID Restrictions

View COVID Travel Restrictions for Chicago, IL

Do I need a COVID test to fly to Chicago from Seattle?

Information is based on travel restrictions for travel to Chicago within the United States

Most visitors from Seattle/Tacoma Intl need to provide a negative COVID-19 test result and/or quarantine to enter Chicago.

COVID-19 testing requirements
Visitors from Seattle/Tacoma Intl must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Chicago.

Quarantine requirements
Visitors from Seattle/Tacoma Intl are not required to quarantine after entering Chicago.

Do I need a test to fly back to Seattle from Chicago?

Returning to Seattle/Tacoma Intl from Chicago

COVID-19 testing requirements
Visitors from Chicago must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Seattle/Tacoma Intl.

Quarantine requirements
Visitors from Chicago are not required to quarantine after entering Seattle/Tacoma Intl.

Hide COVID Travel Restrictions for Chicago, IL

Alternative routes for Seattle to Chicago

See prices for flight routes from nearby airports that may be better suited for you.

Destination information for Chicago

Things to know before you go - useful duration and weather info for your trip from Seattle to Chicago.
Average temperature for October in Chicago
64.4 °F
Avg rainfall for October in Chicago
2.6 ″

Airports servicing Seattle

Airports servicing Chicago

Midway (MDW)
Rockford (RFD)

Top 7 airlines flying from Seattle/Tacoma Intl to Chicago

The chart below displays the airlines Cheapflights users traveling from Seattle to Chicago choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
Spirit Airlines
$84 $211 No cancel fee 65%
Delta
$86 $359 No cancel fee N/A
United Airlines
$95 $270 No cancel fee 69%
American Airlines
$103 $291 No cancel fee 71%
Frontier
$108 $250 No cancel fee 62%
Alaska Airlines
$110 $283 No cancel fee 75%
Southwest
$355 $610 No cancel fee 63%

Hourly flight availability from Seattle to Chicago

See what time of day planes typically take off from Seattle towards Chicago.
Morning 6 AM to noon 45% of SEA to CHI departures
Early morning Midnight to 6 AM 19% of SEA to CHI departures
Afternoon Noon to 6 PM 18% of SEA to CHI departures
Evening 6 PM to midnight 18% of SEA to CHI departures
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.
Sunday
32 daily flights
Monday
50 daily flights
Tuesday
36 daily flights
Wednesday
47 daily flights
Thursday
35 daily flights
Friday
46 daily flights
Saturday
37 daily flights
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