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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 Thursday and return on a Tuesday

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

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

$66

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 22% 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 in the evening. If you’re flexible enough to do this you can expect to save up to 13% on your trip compared to booking a flight in the morning.

Cheap flights from Seattle to Chicago in January, February 2021

The best prices found for SEA to CHI flights for January, February
4 Feb - 8 Feb
$88pp
SEA
Seattle/Tacoma Intl
Frontier
 
1 STOP
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Frontier
 
1 STOP
SEA
Seattle/Tacoma Intl
28 Jan - 1 Feb
$94pp
SEA
Seattle/Tacoma Intl
Frontier
 
1 STOP
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Frontier
 
1 STOP
SEA
Seattle/Tacoma Intl
30 Jan - 24 Feb
$95pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Frontier
 
1 STOP
SEA
Seattle/Tacoma Intl

Seattle to Chicago 2021 flight deals

Cheap flights to Chicago from Seattle found for this year
4 Feb - 8 Feb
$88pp
SEA
Seattle/Tacoma Intl
Frontier
 
1 STOP
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Frontier
 
1 STOP
SEA
Seattle/Tacoma Intl
28 Jan - 1 Feb
$94pp
SEA
Seattle/Tacoma Intl
Frontier
 
1 STOP
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Frontier
 
1 STOP
SEA
Seattle/Tacoma Intl
30 Jan - 24 Feb
$95pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Frontier
 
1 STOP
SEA
Seattle/Tacoma Intl

Non-stop flights to Chicago from Seattle

Save time with Seattle to Chicago direct flight deals
30 Apr - 1 May
$132pp
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
22 Mar - 23 Mar
$134pp
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
17 Feb - 24 Feb
$135pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
Non-Stop
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
United 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
28 Jan - 1 Feb
$94pp
SEA
Seattle/Tacoma Intl
Frontier
 
1 STOP
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Frontier
 
1 STOP
SEA
Seattle/Tacoma Intl
30 Jan - 24 Feb
$95pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Frontier
 
1 STOP
SEA
Seattle/Tacoma Intl
29 Jan - 1 Feb
$97pp
SEA
Seattle/Tacoma Intl
Frontier
 
1 STOP
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Frontier
 
1 STOP
SEA
Seattle/Tacoma Intl

One-way flights to Chicago from Seattle

The cheapest one-way flights from Seattle to Chicago
6:55 am - 2:38 pm
Frontier
2 Stops
29h 43m
SEA - ORD
Frontier
$66
Gotogate
10:35 am - 7:55 am
Spirit Airlines
1 Stop
19h 20m
SEA - ORD
Spirit Airlines
$73
CheapFlights
6:32 am - 4:36 pm
Multiple Airlines
2 Stops
32h 04m
SEA - ORD
Multiple Airlines
$77
Gotogate

Related info for your journey

Useful info, stats and facts about Seattle to Chicago 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 and Delta are some airlines that have done so. 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.

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 Frontier for just $88, but on average you can expect to pay $106.

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 $149.

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?

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

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

2 flight departures from Seattle/Tacoma Intl to Chicago per day on average.
Morning (6am - Noon) - 100% 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 and Frontier can get you from Seattle to Chicago in just under 3h 55m. Your travel time can differ by up to 3h 19m. Airlines will cover a distance of 1725 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

Our cheapest airline available from Seattle to Chicago is Frontier. Our recent data shows that you can find tickets from as low as $88 on this airline. Users have found that Frontier is 58% 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 $32 on Spirit Airlines. Other airlines that offer cheap prices include Frontier from $41 and Alaska Airlines from $56 one-way.

Alternative routes for Seattle to Chicago

Destination information for Chicago

Things to know before you go. Useful info for your trip from Seattle to Chicago
Flight duration
4h 20m
Average temperature for January in Chicago
33.8 °F
Avg rainfall for January in Chicago
0.7 ″

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

Morning 6 AM to noon 59% of SEA to CHI departures
Afternoon Noon to 6 PM 28% of SEA to CHI departures
Early morning Midnight to 6 AM 13% of SEA to CHI departures
Evening 6 PM to midnight 0% of SEA to CHI departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from Seattle to Chicago
Sunday
16 daily flights
Monday
13 daily flights
Tuesday
7 daily flights
Wednesday
12 daily flights
Thursday
13 daily flights
Friday
15 daily flights
Saturday
9 daily flights
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