Cheap flights from Seattle to Chicago

Round-trip
Economy
Seattle (SEA)
Chicago (CHI)
Depart
Return
Any month
Compare vs. Cheapflights |

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 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 2021: compare Seattle to Chicago flight prices with the expected peak season, weather and rainfall in Chicago.
SEA - CHI
Price
C$ 173 - C$ 374
CHI
Temperature
1 - 29 °C
CHI
Precipitation
17 - 109 mm

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

C$ 173

From Seattle to Chicago

One-way from

C$ 183

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?

Tuesday is generally a great day to depart. Flying on this day could help you save up to 50%.

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

Travellers have found it’s best to book a flight 34 days in advance to save up to 86% 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 34 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 C$ 436, or C$ 591 for flights within the next 24 hours.

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

Flights from Seattle to Chicago lean towards being more expensive in January. Prices are generally better when you fly from Seattle to Chicago in April, with the cheapest ticket starting at C$ 240.

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

Unlike at noon, when flights are generally more expensive, you can save up to 29% on flights from Seattle to Chicago by exploring options for tickets in the afternoon.

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
C$ 168pp
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
10 Aug - 17 Aug
C$ 170pp
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
16 Aug - 21 Aug
C$ 173pp
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 to Chicago 2021 flight deals

Cheap flights to Chicago from Seattle found for this year
18 Aug - 23 Aug
C$ 168pp
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
10 Aug - 17 Aug
C$ 170pp
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
16 Aug - 21 Aug
C$ 173pp
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

Direct flights to Chicago from Seattle

Save time with Seattle to Chicago direct flight deals
21 Sep - 22 Sep
C$ 214pp
SEA
Seattle/Tacoma Intl
Alaska Airlines
Direct
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Alaska Airlines
Direct
SEA
Seattle/Tacoma Intl
7 Oct - 12 Oct
C$ 220pp
SEA
Seattle/Tacoma Intl
Alaska Airlines
Direct
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Alaska Airlines
Direct
SEA
Seattle/Tacoma Intl
20 Sep - 22 Sep
C$ 221pp
SEA
Seattle/Tacoma Intl
American Airlines
Direct
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
American Airlines
Direct
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
5 Aug - 11 Aug
C$ 191pp
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
5 Aug - 19 Aug
C$ 200pp
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
4 Aug - 6 Aug
C$ 237pp
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
12:40 p.m. - 2:20 a.m.
Spirit Airlines
1 stop
11h 40m
SEA - ORD
Spirit Airlines
C$ 184
Spirit
8:15 a.m. - 12:36 p.m.
Sun Country Air
1 stop
26h 21m
SEA - ORD
Sun Country Air
C$ 185
8:50 p.m. - 5:11 a.m.
Delta
1 stop
6h 21m
SEA - ORD
Delta
C$ 198
Delta

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?

Most people fly from Seattle/Tacoma Intl (SEA) if they book a flight from Seattle to Chicago. On average, Seattle/Tacoma Intl has 30 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 Delta, Spirit Airlines, and Alaska 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$ 251 on Cheapflights?

Yes, there are multiple flights from Seattle to Chicago for under C$ 251. The cheapest flight booked recently is on Spirit Airlines for just C$ 168, but on average you can expect to pay C$ 200.

Are there direct flights from Seattle to Chicago for under C$ 251 on Cheapflights?

Cheapflights has 20 direct flights from Seattle to Chicago under C$ 251. A good price for a direct flight from Seattle to Chicago is less than C$ 294.

Are there last-minute flights available from Seattle to Chicago for under C$ 251?

There are currently 20+ open flights from Seattle to Chicago within the next 7 days for less than C$ 251.

What days are direct flights available from Seattle to Chicago?

Days when direct flights are available for this flight are: Sunday, Monday, Tuesday, Thursday, Friday, Saturday.

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

37 flight departures from Seattle/Tacoma Intl to Chicago per day on average.
Morning (6am - Noon) - 57% of flight departures
Afternoon (Noon - 6pm) - 38% of flight departures
Evening (6pm - Midnight) - 5% of flight departures

Is Seattle weather warmer or cooler than Chicago?

You can imagine temperatures to be in the 29 °C range in July. The weather in Chicago is generally hotter than Seattle's. As flight availability is subject to become more limited as peak season approaches it is ideal to book in a timely manner.

How long is the flight from Seattle to Chicago?

There are many flights that can get you from Seattle to Chicago in 3h 55m. Fly via Delta, Alaska Airlines, or American Airlines to get the fastest option. Seattle and Chicago are separated by a distance of 2776 km. Generally, flights for this route are direct.

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

According to our current data, Spirit Airlines (C$ 168), Alaska Airlines (C$ 214), and American Airlines (C$ 221) offers the cheapest pricing from Seattle to Chicago. Spirit Airlines is currently priced 37% below the average price you’ll pay for this route.

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

To fly one-way, consider booking your trip with Spirit Airlines, which is currently one of the cheapest options available, starting at C$ 75. Alaska Airlines flights start at C$ 111 while deals on Delta start at C$ 122 one-way.

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 23m
Average temperature for July in Chicago
29.0 °C
Avg rainfall for July in Chicago
95.0 mm

Airports servicing Seattle

Airports servicing Chicago

Chicago Midway (MDW)
Rockford (RFD)

Top 5 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.
Airline Cheapest Average Flexibility On-time COVID-19 safety
Delta
C$ 80 C$ 210 No cancel fee N/A
Search Delta flights
Spirit Airlines
C$ 114 C$ 226 No cancel fee 65%
Search Spirit Airlines flights
United Airlines
C$ 139 C$ 227 No cancel fee 69%
Search United Airlines flights
Alaska Airlines
C$ 84 C$ 254 No cancel fee 75%
Search Alaska Airlines flights
American Airlines
C$ 137 C$ 261 No cancel fee 71%
Search American Airlines flights

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 70% of flight departures
Afternoon Noon to 6 PM 16% of flight departures
Evening 6 PM to midnight 8% of flight departures
Early morning Midnight to 6 AM 6% of flight 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
28 daily flights
Monday
23 daily flights
Tuesday
24 daily flights
Wednesday
39 daily flights
Thursday
48 daily flights
Friday
28 daily flights
Saturday
22 daily flights
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