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Cheap flights from Seattle-Tacoma International to Chicago (SEA - CHI)

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The best prices from Seattle-Tacoma International 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-Tacoma International (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-Tacoma International to Chicago

One-way from

$72

One-way flight from Seattle-Tacoma International 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-Tacoma International to Chicago?

Users have found that flying from Seattle-Tacoma International to Chicago on a Saturday typically leans towards higher prices. However, this doesn’t mean you still can’t find a deal. Flexibility with other aspects of your flight can still land a great price for your trip.

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

Due to multiple factors, expect to potentially pay more when booking in December. For low rates, April can be a great choice for travel to Chicago. Flights to Chicago from Seattle-Tacoma International in April are about $135 on average during April, but can be found for as low as $33.

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

A simple way to save on the total cost of your ticket is to fly from Seattle-Tacoma International 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-Tacoma International to Chicago in January, February 2021

18 Feb - 1 Mar
$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
19 Feb - 22 Feb
$99pp
SEA
Seattle/Tacoma Intl
Frontier
 
1 STOP
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Frontier
 
1 STOP
SEA
Seattle/Tacoma Intl
4 Feb - 8 Feb
$100pp
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-Tacoma International to Chicago 2021 flight deals

18 Feb - 1 Mar
$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
19 Feb - 22 Feb
$99pp
SEA
Seattle/Tacoma Intl
Frontier
 
1 STOP
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Frontier
 
1 STOP
SEA
Seattle/Tacoma Intl
4 Feb - 8 Feb
$100pp
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-Tacoma International

2 Mar - 2 Mar
$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
6 Mar - 13 Mar
$136pp
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
27 Apr - 5 May
$137pp
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-Tacoma International to Chicago

4 Feb - 8 Feb
$100pp
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
5 Feb - 8 Feb
$103pp
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
3 Feb - 10 Feb
$106pp
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

One-way flights to Chicago from Seattle-Tacoma International

5:49 am - 11:16 am
Multiple Airlines
2 Stops
27h 27m
SEA - ORD
Multiple Airlines
$72
Gotogate
2:19 pm - 5:21 pm
Frontier
1 Stop
25h 02m
SEA - ORD
Frontier
$73
Gotogate
10:35 am - 12:26 pm
Spirit Airlines
2 Stops
23h 51m
SEA - ORD
Spirit Airlines
$74
Gotogate

Related info for your journey

Flight FAQs

From Seattle-Tacoma International 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-Tacoma International to Chicago for under $100 on Cheapflights?

Yes, there are multiple flights from Seattle-Tacoma International to Chicago for under $100. The cheapest flight booked recently is on Frontier for just $88, but on average you can expect to pay $111.

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

Cheapflights has at least 20 direct flights from Seattle-Tacoma International to Chicago under $200. A good price for a nonstop flight from Seattle-Tacoma International to Chicago is less than $155.

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

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

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-Tacoma International to Chicago?

For as low as $137, Alaska Airlines can have you in Chicago from Seattle-Tacoma International in 3h 54m. This flight may include one or multiple stops.

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

Our cheapest airline available from Seattle-Tacoma International to Chicago is Frontier. Our recent data shows that you can find tickets from as low as $88 on this airline. Additional options worth looking into are Spirit Airlines and Alaska Airlines, starting at $128 and $132 round-trip. Frontier is priced at 58% lower than the current average price of a flight leaving 3 months from now.

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

The cheapest airline one-way is Spirit Airlines, with whom users have recently found tickets for as low as $32. However, be on the lookout for offers from Frontier and United Airlines, as they are both options that can get you from Seattle-Tacoma International to Chicago for a low price.

Alternative routes for Seattle-Tacoma International to Chicago

Destination information for Chicago

Flight duration
4h 18m
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-Tacoma International to Chicago

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-Tacoma International 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-Tacoma International to Chicago
Sunday
10 daily flights
Monday
12 daily flights
Tuesday
8 daily flights
Wednesday
9 daily flights
Thursday
12 daily flights
Friday
10 daily flights
Saturday
9 daily flights
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