Cheap flights from Chicago to Seattle (CHI - SEA)

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The best prices from Chicago to Seattle 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)

CHI - SEA
Price
$144 - $280
SEA
Temperature
46.4 - 77 °F
SEA
Rainfall
0.7 - 6.5 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 to Seattle

One-way from

$62

One-way flight from Chicago to Seattle

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 Chicago to Seattle?

Flying to your destination on a Saturday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to Seattle. Check prices with Cheapflights to find a great deal for your trip.

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

Users have found that booking a flight from Chicago to Seattle at least 28 days early can save you up to 71% on average compared to booking a flight this week. If booking 28 days before your flight isn’t an option for you, users have found flights from Chicago to Seattle for as little as $123 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $189 for flights departing within the next 3 days.

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

Flights from Chicago to Seattle lean towards being more expensive in December. Prices are generally better when you fly from Chicago to Seattle in April, with the cheapest ticket starting at $36.

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 18% on the flight price compared to flying in the morning, which is usually more expensive.

Cheap flights from Chicago to Seattle in March, April 2021

3 Apr - 17 Apr
$78pp
ORD
Chicago O'Hare Intl
Multiple Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Spirit Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
14 Apr - 20 Apr
$79pp
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
12 Apr - 15 Apr
$83pp
ORD
Chicago O'Hare Intl
Multiple 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

3 Apr - 17 Apr
$78pp
ORD
Chicago O'Hare Intl
Multiple Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Spirit Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
18 May - 25 May
$79pp
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
12 Apr - 15 Apr
$83pp
ORD
Chicago O'Hare Intl
Multiple 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

3 Apr - 11 Apr
$112pp
ORD
Chicago O'Hare Intl
United Airlines
Non-Stop
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
United Airlines
Non-Stop
ORD
Chicago O'Hare Intl
2 Apr - 10 Apr
$117pp
ORD
Chicago O'Hare Intl
Delta
Non-Stop
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Delta
Non-Stop
ORD
Chicago O'Hare Intl
25 Mar - 6 Apr
$131pp
ORD
Chicago O'Hare Intl
United Airlines
Non-Stop
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
United Airlines
Non-Stop
ORD
Chicago O'Hare Intl

Last minute flights from Chicago to Seattle

10 Mar - 18 Mar
$94pp
ORD
Chicago O'Hare Intl
Frontier
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Frontier
 
1 STOP
ORD
Chicago O'Hare Intl
10 Mar - 16 Mar
$98pp
ORD
Chicago O'Hare Intl
Multiple Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Multiple Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
10 Mar - 17 Mar
$101pp
ORD
Chicago O'Hare Intl
Multiple 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 from Chicago

10:05 am - 12:50 pm
Alaska Airlines
Nonstop
4h 45m
ORD - SEA
Alaska Airlines
$62
mytrip.com
5:35 pm - 10:16 am
Spirit Airlines
1 Stop
18h 41m
ORD - SEA
Spirit Airlines
$64
Kiwi.com
10:21 am - 5:52 pm
Delta
1 Stop
9h 31m
MDW - SEA
Delta
$68
Delta

Related info for your journey

Flight FAQs

From Chicago to Seattle

Are flight prices decreasing from Chicago to Seattle 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 Chicago and Seattle 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 Chicago to Seattle/Tacoma Intl to control the spread of COVID-19?

Alaska Airlines and Delta are some of the many airlines that have implemented additional safety measures to control the spread of COVID-19. New policies for travelers booking flights from Chicago to Seattle/Tacoma Intl include masks being provided and required on board, daily cleaning and sanitization, use of HEPA filters, pre-flight testing for antibodies and symptoms, and socially distanced seating (for a limited time). Keep in mind that policies will vary by airline.

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 Multiple Airlines for just $78, but on average you can expect to pay $94.

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 $145.

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?

You can find nonstop flights on the following days: Monday, Saturday.

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

5 flight departures from Chicago to Seattle/Tacoma Intl per day on average.
Morning (6am - Noon) - 40% of flight departures
Afternoon (Noon - 6pm) - 60% of flight departures

Is Chicago weather warmer or cooler than Seattle?

Temperatures around the 84 °F's can be experienced in July. The weather in Seattle is colder than in Chicago. Plan for potential changes in flight availability as peak weather approaches in this location.

How long is the flight from Chicago to Seattle?

A quick flight from Chicago to Seattle can take about 4h 38m. Delta provides one of the quickest options available for as low as $117. There are 1725 mi between Chicago and Seattle. This flight may include one or multiple stops.

What are the cheapest airlines flying 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 $79 on this airline. An additional option worth looking into is Frontier, starting at $92. You may be able to fly from Chicago to Seattle for 60% less than the average price by searching for these airlines.

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

For one-way options, check prices for Spirit Airlines. According to our data, you can fly for as low as $40. Users have also found prices from $44 and $59 on Spirit Airlines and Frontier, respectively.

Alternative routes for Chicago to Seattle

Destination information for Seattle

Flight duration
4h 20m
Average temperature for March in Seattle
55.4 °F
Avg rainfall for March in Seattle
3.8 ″

Airports servicing Chicago

Chicago Midway (MDW)
Rockford (RFD)

Airports servicing Seattle

Top 6 airlines flying from Chicago to Seattle

Airline Cheapest Average Flexibility On-time COVID-19 safety
Frontier
$92 $187 No cancel fee 62%
Spirit Airlines
$94 $203 No cancel fee 65%
American Airlines
$105 $270 No cancel fee 71%
United Airlines
$90 $273 No cancel fee 69%
Alaska Airlines
$86 $275 No cancel fee 75%
Delta
$86 $323 No cancel fee N/A

Hourly flight availability from Chicago to Seattle

Morning 6 AM to noon 51% of CHI to SEA departures
Afternoon Noon to 6 PM 24% of CHI to SEA departures
Early morning Midnight to 6 AM 19% of CHI to SEA departures
Evening 6 PM to midnight 6% of CHI to SEA departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from Chicago to Seattle
Sunday
6 daily flights
Monday
9 daily flights
Tuesday
9 daily flights
Wednesday
10 daily flights
Thursday
6 daily flights
Friday
7 daily flights
Saturday
6 daily flights
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