ORD - SEA

£65 Find Cheap Flights from Chicago to Seattle

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Chicago to Seattle departing on 3/3. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Seattle

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Chicago to Seattle, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Chicago to Seattle, as well as popular online travel agencies
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41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest return fare
£128
Overall average: £158
Alaska Airlines
Thu 19/2Wed 25/2
ORD - SEA • Direct
Cheapest direct flights
£128
Typical prices: £128-£232
Delta
Thu 19/2Sat 28/2
ORD - SEA • Direct
Our travellers' advice
AI-powered summary based on content written by travel experts and KAYAK users. AI can make mistakes.
O'Hare's security lines can be long, so arrive early.
Bring your own food on Alaska Airlines for this route.
Expert advice
Expert advice
+1
+1
Expert advice
Expert advice
+1
When to book
4 weeks
in advance
Our data shows that travellers who book at least 4 weeks in advance save around 59% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
February
Cheapest • 22% price drop
June
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Seattle!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from Chicago to Seattle (ORD-SEA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Chicago to Seattle that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Chicago to Seattle

Thu, 19 Feb - Wed, 25 Feb
Alaska Airlines Logo
07:00 - 09:51
ORD
-
SEA
4h 51mdirect
Alaska Airlines Logo
17:55 - 23:56
SEA
-
ORD
4h 01mdirect
£128Alaska Airlines
Wed, 18 Mar - Wed, 18 Mar
Alaska Airlines Logo
19:24 - 22:05
ORD
-
SEA
4h 41mdirect
Alaska Airlines Logo
00:35 - 06:39
SEA
-
ORD
4h 04mdirect
£132Alaska Airlines
Thu, 19 Feb - Tue, 24 Feb
United Airlines Logo
16:20 - 19:03
ORD
-
SEA
4h 43mdirect
United Airlines Logo
12:32 - 23:26
SEA
-
ORD
8h 54m
1 stop
£133United Airlines
Sat, 14 Mar - Sun, 22 Mar
Alaska Airlines Logo
17:29 - 20:16
ORD
-
SEA
4h 47mdirect
Alaska Airlines Logo
00:35 - 06:39
SEA
-
ORD
4h 04mdirect
£136Alaska Airlines
Tue, 31 Mar - Sun, 5 Apr
United Airlines Logo
13:59 - 16:37
ORD
-
SEA
4h 38mdirect
United Airlines Logo
23:59 - 05:59
SEA
-
ORD
4h 00mdirect
£137United Airlines
Wed, 11 Mar - Fri, 13 Mar
United Airlines Logo
20:01 - 22:45
ORD
-
SEA
4h 44mdirect
United Airlines Logo
23:59 - 05:56
SEA
-
ORD
3h 57mdirect
£138United Airlines
Fri, 20 Mar - Tue, 24 Mar
United Airlines Logo
16:20 - 19:03
ORD
-
SEA
4h 43mdirect
United Airlines Logo
23:59 - 05:56
SEA
-
ORD
3h 57mdirect
£142United Airlines
Wed, 22 Apr - Wed, 13 May
Delta Logo
12:46 - 15:20
ORD
-
SEA
4h 34mdirect
Delta Logo
07:20 - 13:30
SEA
-
ORD
4h 10mdirect
£143Delta
Fri, 13 Mar - Thu, 19 Mar
American Airlines Logo
20:29 - 23:13
ORD
-
SEA
4h 44mdirect
American Airlines Logo
00:13 - 06:29
SEA
-
ORD
4h 16mdirect
£144American Airlines
Sun, 8 Mar - Tue, 10 Mar
United Airlines Logo
20:01 - 22:45
ORD
-
SEA
4h 44mdirect
United Airlines Logo
12:36 - 23:38
SEA
-
ORD
9h 02m
1 stop
£146United Airlines
Booking Insights

KAYAK's insights & trends for Chicago to Seattle flights

Get data-powered insights and trends into flights from Chicago to Seattle to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Chicago O'Hare Intl Airport to Seattle?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Chicago O'Hare Intl Airport to Seattle, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Chicago O'Hare Intl Airport to Seattle is February, where tickets cost £158 (return) on average. On the other hand, the most expensive months are June and November, where the average cost of round-trip tickets is £238 and £237 respectively.

How far in advance should I book a flight from Chicago O'Hare Intl Airport to Seattle?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Chicago O'Hare Intl Airport to Seattle, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Chicago O'Hare Intl Airport to Seattle, you should book around 4 weeks before departure, which saves you about 59% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 7 weeks before departure.

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Expert advice

Expert advice for your flight from Chicago to Seattle

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on ORD

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or out at sea, likely en route to Antarctica or the Arctic.

Read more
Harriet Baskas

Harriet Baskas

Expert on SEA

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, The Points Guy, and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more

Good to know - Cheap tickets from Chicago to Seattle

Low seasonJanuary
Cheapest flight£65
Best time to beat the crowds (5% less expensive on average)
Most popular time to fly (17% more expensive on average)
Flight from Chicago to Seattle

When to book flights from Chicago to Seattle

Are your dates flexible? Find out the best times to travel from Chicago to Seattle based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

Flights from Chicago to Seattle: the best tips from KAYAK users' own experiences

Insights shared by verified travellers who flew the route from Chicago to Seattle 
Learn how KAYAK collects reviews and tips from users.
PaulFlew with Alaska Airlines
ORD
-
SEA
Apr 2024
The flight is long, at over four hours. I would try to get a window or aisle seat to be more comfortable. I would check with other airlines that allow you to choose your seat even if you are in the economy section. I would bring your own food on the plane as the service was sometimes sketchy.
Verified travelerFlew with Alaska Airlines
ORD
-
SEA
Apr 2024
If you miss your flight ask any alaska agent to how and where to rebook the flight.

FAQs for booking Chicago to Seattle flights

  • What is the cheapest flight from Chicago O'Hare Intl Airport to Seattle?

    In the last 3 days, the lowest price for a flight from Chicago O'Hare Intl Airport to Seattle was £65 for a one-way ticket and £128 for a return.

  • Which airports will I be using when flying from Chicago to Seattle?

    Chicago and Seattle are both served by 1 main airport. You will leave Chicago from Chicago O'Hare Intl and will be arriving at Seattle/Tacoma Intl.

  • Which airlines offer Wi-Fi service onboard planes from Chicago to Seattle?

    American Airlines, Alaska Airlines, Delta, Air Canada, and United Airlines offer inflight Wi-Fi service on the Chicago to Seattle flight route.

  • Which aircraft models fly most regularly from Chicago to Seattle?

    The Boeing 737-800 is the aircraft model that flies most regularly on the Chicago to Seattle flight route.

  • On which days can I fly direct from Chicago to Seattle?

    There are direct flights from Chicago to Seattle on a daily basis.

  • How does KAYAK find such low prices on flights from Chicago to Seattle?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Chicago to Seattle.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Chicago to Seattle?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Chicago is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Chicago to Seattle?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Seattle with an airline and back to Chicago with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Chicago to Seattle?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from Chicago up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Prefer to fly direct from Chicago to Seattle?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Chicago O'Hare Intl to Seattle/Tacoma Intl.
Find which airlines fly direct from Chicago O'Hare Intl Airport to Seattle/Tacoma Intl Airport, which days they fly and book direct flights.

Direct departures

Chicago O'Hare Intl to Seattle/Tacoma Intl

Monday

Alaska Airlines, American Airlines, Delta, +1 more

Alaska Airlines, American Airlines, +2 more

Tuesday

Alaska Airlines, American Airlines, Delta, +1 more

Alaska Airlines, American Airlines, +2 more

Wednesday

Alaska Airlines, American Airlines, Delta, +1 more

Alaska Airlines, American Airlines, +2 more

Thursday

Alaska Airlines, American Airlines, Delta, +1 more

Alaska Airlines, American Airlines, +2 more

Friday

Alaska Airlines, American Airlines, Delta, +1 more

Alaska Airlines, American Airlines, +2 more

Saturday

Alaska Airlines, American Airlines, Delta, +1 more

Alaska Airlines, American Airlines, +2 more

Sunday

Alaska Airlines, American Airlines, Delta, +1 more

Alaska Airlines, American Airlines, +2 more

See more direct flights

Direct returns

Seattle/Tacoma Intl to Chicago O'Hare Intl

Monday

Alaska Airlines, American Airlines, Delta, +1 more

Alaska Airlines, American Airlines, +2 more

Tuesday

Alaska Airlines, American Airlines, Delta, +1 more

Alaska Airlines, American Airlines, +2 more

Wednesday

Alaska Airlines, American Airlines, Delta, +1 more

Alaska Airlines, American Airlines, +2 more

Thursday

Alaska Airlines, American Airlines, Delta, +1 more

Alaska Airlines, American Airlines, +2 more

Friday

Alaska Airlines, American Airlines, Delta, +1 more

Alaska Airlines, American Airlines, +2 more

Saturday

Alaska Airlines, American Airlines, Delta, +1 more

Alaska Airlines, American Airlines, +2 more

Sunday

Alaska Airlines, American Airlines, Delta, +1 more

Alaska Airlines, American Airlines, +2 more

See more direct flights

Everything you need to know for your flight from Chicago to Seattle

Information on your arrival and departure airports

Chicago (ORD)
Seattle (SEA)