Cheap flights from Seattle to Chicago (SEA - CHI)

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The best prices from Seattle 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
33.8 - 84.2 °F
CHI
Rainfall
0.7 - 4.3 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 to Chicago

One-way from

$92

One-way flight from Seattle to Chicago

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?

Travelers have found that booking a Tuesday departure is the best way to save up to 21% on the cost of booking your flights compared to booking on days of the week where this route is of high demand.

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

Travelers have found it’s best to book a flight 20 days in advance to save up to 10% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 20 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Seattle to Chicago 1-2 weeks in advance for as low as $137, or $157 for flights within the next 24 hours.

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

April is one of the best times of the year to fly to Chicago from Seattle. Prices for April average $135 per person but you can even find prices for as low as $33. The most expensive prices can be found in the month of December. Opting for a April flight can save you 49% on your journey compared to booking in April

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

A simple way to save on the total cost of your ticket is to fly from Seattle to Chicago at noon. If you’re flexible enough to do this you can expect to save up to 9% on your trip compared to booking a flight in the morning.

Cheap flights from Seattle to Chicago in July, August 2021

The best prices found for SEA to CHI flights for July, August
18 Aug - 23 Aug
$134pp
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
24 Aug - 31 Aug
$145pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Alaska Airlines
Non-Stop
SEA
Seattle/Tacoma Intl
18 Aug - 17 Nov
$146pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Alaska Airlines
Non-Stop
SEA
Seattle/Tacoma Intl

Seattle to Chicago 2021 flight deals

Cheap flights to Chicago from Seattle found for this year
18 Aug - 21 Aug
$134pp
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
8 Sep - 15 Sep
$142pp
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
24 Aug - 31 Aug
$145pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Alaska Airlines
Non-Stop
SEA
Seattle/Tacoma Intl

Non-stop flights to Chicago from Seattle

Save time with Seattle to Chicago direct flight deals
18 Oct - 19 Oct
$170pp
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
18 Sep - 27 Sep
$175pp
SEA
Seattle/Tacoma Intl
Delta
Non-Stop
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Delta
Non-Stop
SEA
Seattle/Tacoma Intl
2 Oct - 6 Oct
$176pp
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

Last minute flights from Seattle to Chicago

Late deals on round-trip flights to Chicago from Seattle, departing today and this week
4 Aug - 11 Aug
$166pp
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 Aug - 11 Aug
$221pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Multiple Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
3 Aug - 7 Aug
$222pp
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

One-way flights to Chicago from Seattle

The cheapest one-way flights from Seattle to Chicago
7:39 am - 4:13 pm
United Airlines
1 Stop
6h 34m
SEA - ORD
United Airlines
$92
United
8:35 pm - 6:02 am
Delta
1 Stop
7h 27m
SEA - MDW
Delta
$107
Delta
7:59 pm - 2:00 am
Alaska Airlines
Nonstop
4h 01m
SEA - ORD
Alaska Airlines

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

Are flight prices decreasing from Seattle to Chicago due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Seattle and Chicago for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

What safety measures are being taken by airlines flying from Seattle/Tacoma Intl to Chicago to control the spread of COVID-19?

Airlines globally have implemented additional safety measures to accommodate you. Alaska Airlines is one of them. Some of the new policies that have been implemented to accommodate travelers flying from Seattle/Tacoma Intl to Chicago are improved sanitation, HEPA filters, mask requirements, social distance seating (for a limited time), and pre-flight testing for antibodies and symptoms. Policies will vary by airline.

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.

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

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

Yes, there are multiple flights from Seattle to Chicago for under $200. The cheapest flight booked recently is on Spirit Airlines for just $134, but on average you can expect to pay $155.

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 $201.

Are there last-minute flights available from Seattle to Chicago for under $200?

There are currently 20+ open flights from Seattle to Chicago within the next 7 days for less than $200.

What days are nonstop flights available from Seattle to Chicago?

Days when nonstop flights are available for this flight are: Sunday, Monday, Tuesday, Wednesday, Friday.

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

23 flight departures from Seattle/Tacoma Intl to Chicago per day on average.
Morning (6am - Noon) - 61% of flight departures
Afternoon (Noon - 6pm) - 39% of flight departures

Is Seattle weather warmer or cooler than Chicago?

Expect the weather to be around 84 °F on average in July. As the temperature peaks, try to get your plans done early, as flight price and availability will have an impact on your travels. The climate in Chicago is generally hotter than in Seattle.

How long is the flight from Seattle to Chicago?

Delta, Alaska Airlines, and United Airlines can get you from Seattle to Chicago in just under 3h 58m. Your travel time can differ by up to 2h 36m. Airlines will cover a distance of 1725 mi. Both multi-stop and nonstop flights can be found to your destination and back.

What are the cheapest airlines flying 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 $134 on this airline. Additional options worth looking into are Alaska Airlines and Delta, starting at $170 and $175 round-trip. Users have found that Spirit Airlines is 37% cheaper than the other options available to this destination.

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

One-way options have recently been found by users for as low as $60 on Spirit Airlines. Other airlines that offer cheap prices include Alaska Airlines from $67 and Delta from $88 one-way.

COVID Restrictions

View COVID Travel Restrictions for Chicago, IL

Can I fly to Chicago from Seattle/Tacoma Intl right now?

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.

Can I fly back to Seattle/Tacoma Intl 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.
Flight duration
4h 22m
Average temperature for July in Chicago
84.2 °F
Avg rainfall for July in Chicago
3.7 ″

Airports servicing Seattle

Airports servicing Chicago

Chicago Midway (MDW)
Rockford (RFD)

Top 7 airlines flying from Seattle 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%
Frontier
$108 $250 No cancel fee 62%
United Airlines
$95 $270 No cancel fee 69%
Alaska Airlines
$110 $283 No cancel fee 75%
American Airlines
$103 $291 No cancel fee 71%
Delta
$86 $359 No cancel fee N/A
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 67% of SEA to CHI departures
Afternoon Noon to 6 PM 16% of SEA to CHI departures
Evening 6 PM to midnight 9% of SEA to CHI departures
Early morning Midnight to 6 AM 8% 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
47 daily flights
Monday
39 daily flights
Tuesday
31 daily flights
Wednesday
32 daily flights
Thursday
38 daily flights
Friday
47 daily flights
Saturday
35 daily flights
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