Cheap flights from Chicago to Seattle (CHI - SEA)

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

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

All the information you need to plan the best CHI to SEA flight in 2021: compare Chicago to Seattle flight prices with the expected peak season, weather and rainfall in Seattle.
CHI - SEA
Price
$144 - $280
SEA
Temperature
41 - 66.2 °F
SEA
Precipitation
0.7 - 6.6 inches

Popular in

December

High demand for flights, 29% potential price rise

Cheapest in

August

Best time to find cheap flights, 27% potential price drop

Round-trip from

$144

From Chicago (CHI) to Seattle/Tacoma Intl

One-way from

$37

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

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
How far in advance should I book a flight from Chicago to Seattle?

Travelers have found it’s best to book a flight 56 days in advance to save up to 26% 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 56 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 Chicago to Seattle 1-2 weeks in advance for as low as $215, or $233 for flights within the next 24 hours.

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

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

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

Users have found that leaving on a Monday can be a cost-effective option. It’s possible to save up to 23% on your flight compared to booking on days when demand is much higher.

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

Our data shows that August tends to be the cheapest month to fly to Seattle from Chicago. Users have commonly found prices around $198 for the month, but tickets can be as low as $86. Due to multiple factors, prepare for potentially higher prices in December.

Cheap flights from Chicago to Seattle in October, November 2021

The best prices found for CHI to SEA flights for October, November
9 Nov - 16 Nov
$69pp
ORD
Chicago O'Hare Intl
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Spirit Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
10 Nov - 16 Nov
$76pp
ORD
Chicago O'Hare Intl
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Spirit Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
9 Nov - 16 Nov
$77pp
ORD
Chicago O'Hare Intl
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Spirit Airlines
 
1 STOP
ORD
Chicago O'Hare Intl

Chicago to Seattle 2021 flight deals

Cheap flights to Seattle from Chicago found for this year
9 Nov - 16 Nov
$69pp
ORD
Chicago O'Hare Intl
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Spirit Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
10 Nov - 16 Nov
$76pp
ORD
Chicago O'Hare Intl
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Spirit Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
9 Nov - 16 Nov
$77pp
ORD
Chicago O'Hare Intl
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Spirit Airlines
 
1 STOP
ORD
Chicago O'Hare Intl

Non-stop flights to Seattle from Chicago

Save time with Chicago to Seattle direct flight deals
9 Nov - 16 Nov
$161pp
ORD
Chicago O'Hare Intl
Major Airline
Non-Stop
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Major Airline
Non-Stop
ORD
Chicago O'Hare Intl
7 Dec - 11 Dec
$162pp
ORD
Chicago O'Hare Intl
Alaska Airlines
Non-Stop
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Alaska Airlines
Non-Stop
ORD
Chicago O'Hare Intl
31 Jan - 4 Feb
$164pp
ORD
Chicago O'Hare Intl
Alaska Airlines
Non-Stop
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Alaska Airlines
Non-Stop
ORD
Chicago O'Hare Intl

Last minute flights from Chicago to Seattle

Late deals on round-trip flights to Seattle from Chicago, departing today and this week
22 Oct - 27 Oct
$92pp
ORD
Chicago O'Hare Intl
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Spirit Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
23 Oct - 27 Oct
$105pp
ORD
Chicago O'Hare Intl
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Spirit Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
23 Oct - 27 Oct
$108pp
ORD
Chicago O'Hare Intl
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Spirit Airlines
 
1 STOP
ORD
Chicago O'Hare Intl

One-way flights to Seattle/Tacoma Intl from Chicago

The cheapest one-way flights from Chicago to Seattle
5:31 pm - 6:20 am
Spirit Airlines
1 Stop
14h 49m
ORD - SEA
Spirit Airlines
$37
mytrip.com
5:31 pm - 6:20 am
Spirit Airlines
1 Stop
14h 49m
ORD - SEA
Spirit Airlines
$38
FareScan
5:22 am - 1:12 pm
Spirit Airlines
1 Stop
9h 50m
ORD - SEA
Spirit Airlines
$40
Spirit

Related info for your journey

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

Flight FAQs

From Chicago to Seattle

What airport do you fly into for flights to Seattle from Chicago?

Seattle/Tacoma Intl (SEA), located 11.4 mi from the city center, is the airport you fly into when you book flights from Chicago to Seattle. 9 airlines have flights to Seattle/Tacoma Intl from Chicago on a regular basis. Booking flights from Chicago to Seattle/Tacoma Intl should not be difficult; the airport handles an average of 36 inbound flights from Chicago per day.

Which airlines flying from Chicago to Seattle/Tacoma Intl have flexible cancellations due to COVID-19?

Some of the carriers operating flights from Chicago to Seattle/Tacoma Intl 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 Chicago to Seattle for under $100 on Cheapflights?

Yes, there are multiple flights from Chicago to Seattle for under $100. The cheapest flight booked recently is on Spirit Airlines for just $69, but on average you can expect to pay $91.

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

Cheapflights has at least 20 direct flights from Chicago to Seattle under $200. A good price for a nonstop flight from Chicago to Seattle is less than $182.

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

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

What days are nonstop flights available from Chicago to Seattle?

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

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

On average, you can expect to see 28 flights from Chicago to Seattle a day.
Morning (6am - Noon) - 21% of flight departures
Afternoon (Noon - 6pm) - 36% of flight departures
Evening (6pm - Midnight) - 43% of flight departures

How long is the flight from Chicago to Seattle?

For as low as $69, Spirit Airlines can have you in Seattle from Chicago in 16h 08m. The distance from Chicago to Seattle is about 1725 mi.

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

Our cheapest airline available from Chicago to Seattle is Spirit Airlines. Our recent data shows that you can find tickets from as low as $69 on this airline. Spirit Airlines is priced at 65% lower than the current average price of a flight leaving 3 months from now.

What are the cheapest flights from Chicago to Seattle?

Looking at all options, your cheapest flight can be booked for $81. While the most popular route (Chicago O'Hare Intl - Seattle/Tacoma Intl) can be booked for $76 on average our data indicates $413 when flying from Chicago to Seattle

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

Before booking your flight from Chicago to Seattle check out the most popular airlines for this route: Major Airline, American Airlines or Alaska Airlines.

What are the most reliable airlines from Chicago to Seattle?

No one likes to see their flight delayed. When booking a flight from Chicago to Seattle consider choosing Alaska Airlines (87%), United Airlines (85%) or Delta (81%) as they are the most reliable in getting you off to your destination on time.

COVID Restrictions

View COVID Travel Restrictions for Seattle, WA

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

Information is based on travel restrictions for travel to Seattle/Tacoma Intl within the United States

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

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.

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

Returning to Chicago from Seattle/Tacoma Intl

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.

Hide COVID Travel Restrictions for Seattle, WA

Alternative routes for Chicago to Seattle

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

Destination information for Seattle

Things to know before you go - useful duration and weather info for your trip from Chicago to Seattle.
Average temperature for October in Seattle
60.8 °F
Avg rainfall for October in Seattle
3.5 ″

Airports servicing Chicago

Midway (MDW)
Rockford (RFD)

Airports servicing Seattle

Top 6 airlines flying from Chicago to Seattle/Tacoma Intl

The chart below displays the airlines Cheapflights users traveling from Chicago to Seattle 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
Alaska Airlines
$86 $275 No cancel fee 75%
Delta
$86 $323 No cancel fee N/A
United Airlines
$90 $273 No cancel fee 69%
Frontier
$92 $187 No cancel fee 62%
Spirit Airlines
$94 $203 No cancel fee 65%
American Airlines
$105 $270 No cancel fee 71%

Hourly flight availability from Chicago to Seattle

See what time of day planes typically take off from Chicago towards Seattle.
Afternoon Noon to 6 PM 47% of CHI to SEA departures
Morning 6 AM to noon 26% of CHI to SEA departures
Evening 6 PM to midnight 26% of CHI to SEA departures
Early morning Midnight to 6 AM 1% of CHI to SEA departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from Chicago to Seattle
See how many times per day planes take to the skies headed from Chicago to Seattle.
Sunday
33 daily flights
Monday
39 daily flights
Tuesday
34 daily flights
Wednesday
40 daily flights
Thursday
47 daily flights
Friday
39 daily flights
Saturday
26 daily flights
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