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ORD - SEA

£80 Find cheap flights from Chicago O'Hare Intl Airport 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 10/5. 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
0 bags
Mon 27/5
Mon 3/6

Search 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
In the last 7 days, travellers have searched 43,623,357 times on KAYAK, and here's why:

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Cheap flight deals from Chicago to Seattle (ORD-SEA)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip 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 and deals for you by selecting your travel dates.
Choose your dates
07:26 - 10:05ORD-SEA
4h 39mdirect
18:00 - 23:58SEA-ORD
3h 58mdirect
£111Delta
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Wed, 9 Oct - Tue, 15 Oct
21:07 - 23:41ORD-SEA
4h 34mdirect
07:00 - 16:15SEA-ORD
7h 15m1 stop
£134Alaska Airlines
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Wed, 18 Sep - Tue, 24 Sep
14:54 - 19:21ORD-SEA
6h 27m1 stop
17:45 - 23:49SEA-ORD
4h 04mdirect
£135Alaska Airlines
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Sat, 25 May - Tue, 28 May
06:00 - 08:34ORD-SEA
4h 34mdirect
21:45 - 05:30SEA-ORD
5h 45m1 stop
£142Alaska Airlines
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Wed, 18 Sep - Sun, 22 Sep
06:00 - 08:34ORD-SEA
4h 34mdirect
10:48 - 16:58SEA-ORD
4h 10mdirect
£154Alaska Airlines
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Wed, 18 Sep - Wed, 18 Sep
06:03 - 08:30ORD-SEA
4h 27mdirect
18:00 - 00:05SEA-ORD
4h 05mdirect
£159Delta
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Fri, 10 May - Sat, 11 May
21:25 - 23:59ORD-SEA
4h 34mdirect
12:55 - 00:40SEA-ORD
9h 45m1 stop
£187United Airlines
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Wed, 21 Aug - Tue, 27 Aug
17:00 - 22:53ORD-SEA
7h 53m1 stop
23:59 - 20:39SEA-ORD
18h 40m1 stop
£194Sun Country Air
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Wed, 10 Jul - Fri, 12 Jul
18:30 - 08:08ORD-SEA
15h 38m1 stop
23:59 - 19:06SEA-ORD
17h 07m1 stop
£199Sun Country Air
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Thu, 6 Jun - Sun, 9 Jun
19:45 - 22:22ORD-SEA
4h 37mdirect
23:59 - 06:00SEA-ORD
4h 01mdirect
£208United Airlines
Find Deal
Fri, 6 Sep - Tue, 10 Sep

Flights from Chicago to Seattle - Travel Insights & Trends

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 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 January, where tickets cost £174 on average. On the other hand, the most expensive months are July and June, where the average cost of tickets is £342 and £334 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for 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 month.
To get a below average price on the flight from Chicago O'Hare Intl Airport to Seattle, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 82 days before departure.

Which airlines provide the cheapest flights from Chicago to Seattle?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the best return deals on flights connecting Chicago to Seattle were found on Delta (£111) and Alaska Airlines (£134). Alaska Airlines proposed the cheapest one-way flight at £80.

Which airlines fly most frequently between Chicago and Seattle?

The airlines most regularly connecting Chicago to Seattle are Alaska Airlines (11 flights per day), United Airlines (8 flights per day), and Delta (5 flights per day).

How many flights are there between Chicago O'Hare Intl Airport and Seattle per day?

Each day, there are between 24 and 31 nonstop flights that take off from Chicago O'Hare Intl Airport and land in Seattle, with an average flight time of 4h 35m. The most common departure time is 19:00 and most flights take off in the afternoon. Each week, there are 192 flights. The most frequent day of departure is Thursday, when 16% of all weekly flights depart. The fewest flights depart on a Saturday.

Which cabin class options are there for flights between Chicago O'Hare Intl Airport and Seattle?

The average price of flights for each cabin class for the route found by users searching on KAYAK over the last 2 weeks.
There are 3 cabin class options for the route. These are First, Business and Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

How long does a flight from Chicago to Seattle take?

Direct flights cover the 1,715 miles separating Chicago and Seattle in about 4h 27m.

What’s the earliest departure time from Chicago to Seattle?

Early birds can take the earliest flight from Chicago O'Hare Intl Airport at 06:00 and will be landing in Seattle at 08:34.

What’s the latest departure time from Chicago to Seattle?

If you prefer to fly at night, the latest flight from Chicago O'Hare Intl Airport to Seattle jets off at 21:20 and lands at 23:55.

Good to know - Cheap tickets from Chicago to Seattle

Low season

January

High season

August

Cheapest flight

£80
Best time to beat the crowds (23% less expensive on average)
Most popular time to fly (18% 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.

FAQs for booking Chicago to Seattle flights

  • Which accessible services are offered at Seattle-Tacoma International Airport?

    SEA has taken several measures to ensure passengers can safely maneuver through the airport barrier-free. Step-free access has been provided throughout the airport complex. Reserved spots are also available in the parking garage for drivers with limited mobility. The airport also provides wheelchair assistance, and in partnership with Aira, the visually impaired also get assistance at SEA.

  • Which family services are offered at Chicago O’Hare International Airport?

    ORD encourages families to travel through their gateway and has provided services to keep families comfortable. Baby care facilities are provided in every terminal for nursing mothers looking to breastfeed in comfort and privacy. There’s a family lounge at ORD equipped with toys, climbing structures, and video games, where kids can burn off that extra energy before the flight. There are also family restrooms with baby changing facilities provided all around the airport.

  • What are the most eco-friendly airlines flying from Chicago to Seattle?

    Several nonstop flights are offered from Chicago to Seattle. Around 1,045 kg of carbon is emitted per passenger on flights from Seattle to Chicago. However, this amount is significantly reduced when you fly with United Airlines, Alaska Airlines, and Delta. These airlines emit 62%, 53%, and 51% less carbon per passenger on their flights from Ord to SEA.

  • What are the transport options from Seattle-Tacoma International Airport?

    King County Metro Buses are the first option for getting downtown. You’ll find these buses opposite the Sea-Tac Airport LINK Light Rail station, and the departure timetable is posted at the bus stop. The other option is the LINK Light Rail system. Trains run every 6-15min, and you’ll find them on the fourth floor of the airport parking garage. Several companies offer shuttle services from the airport, and taxis are also available on the third floor of the airport garage. The rental car facility is just outside baggage claim for those willing to self-drive.

  • 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 £100 for a one-way ticket and £139 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.

  • Which airline alliances offer flights from Chicago to Seattle?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Chicago and Seattle, with oneworld being the most commonly used for this 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.

See more FAQs

Top tips for finding a cheap flight from Chicago to Seattle

  • Looking for a cheap flight from Seattle to Chicago? 25% of our users found flights on this route for £93 or less one-way and £257 or less round-trip.
  • Chicago O’Hare International Airport (ORD) is a major transportation gateway, consisting of four terminals with nine concourses. The airport has provided the ATS, which loops every 3min through the terminals, airport parking lots, and bus stops for getting around the airport complex.
  • If you have some time to pass before your flight, check out the Health Club at ORD. Featuring a steam room, lap pool, sauna, Jacuzzi, and full-service locker rooms, the Health Club will help you pass the time and get relaxed before your flight.
  • Fly with Alaska Airlines, Delta, and United Airlines to take advantage of their airline lounges at Seattle-Tacoma International Airport (SEA) after your flight. You can access these lounges by paying at the door and showing your flight ticket.
  • Pets are welcome at ORD. However, they’ll be required to stay within their carrier while traveling through the airport. ORD has provided several animal relief areas at the multi-modal facility and on the lower levels of Terminals 1, 2, and 5.
  • Shop on all the essentials tax-free before your Seattle adventure. You’ll find duty-free shops at SEA station in the Central terminal, around Gate A and Gate S. The location at Gate S is open 24h.
See more tips

Prefer to fly direct from Chicago to Seattle?

Find which airlines fly direct from O'Hare Intl to Seattle/Tacoma Intl, which days they fly and book direct flights.

Direct departures

Chicago O'Hare Intl to Seattle/Tacoma Intl

Monday

Aer Lingus, Air France, Air Tahiti Nui, +18 more

Aer Lingus, Air France, +19 more

Tuesday

Aer Lingus, Air France, Air Tahiti Nui, +18 more

Aer Lingus, Air France, +19 more

Wednesday

Aer Lingus, Air France, Air Tahiti Nui, +20 more

Aer Lingus, Air France, +21 more

Thursday

Aer Lingus, Air France, Air Tahiti Nui, +18 more

Aer Lingus, Air France, +19 more

Friday

Aer Lingus, Air France, Air Tahiti Nui, +20 more

Aer Lingus, Air France, +21 more

Saturday

Aer Lingus, Air France, Air Tahiti Nui, +18 more

Aer Lingus, Air France, +19 more

Sunday

Aer Lingus, Air France, Air Tahiti Nui, +19 more

Aer Lingus, Air France, +20 more

See more direct flights

Direct returns

Seattle/Tacoma Intl to Chicago O'Hare Intl

Monday

Aer Lingus, Air Tahiti Nui, Alaska Airlines, +17 more

Aer Lingus, Air Tahiti Nui, +18 more

Tuesday

Aer Lingus, Air France, Air Tahiti Nui, +19 more

Aer Lingus, Air France, +20 more

Wednesday

Aer Lingus, Air Tahiti Nui, Alaska Airlines, +19 more

Aer Lingus, Air Tahiti Nui, +20 more

Thursday

Aer Lingus, Air France, Air Tahiti Nui, +19 more

Aer Lingus, Air France, +20 more

Friday

Aer Lingus, Air France, Air Tahiti Nui, +19 more

Aer Lingus, Air France, +20 more

Saturday

Aer Lingus, Air France, Air Tahiti Nui, +19 more

Aer Lingus, Air France, +20 more

Sunday

Aer Lingus, Air France, Air Tahiti Nui, +20 more

Aer Lingus, Air France, +21 more

See more direct flights
See more direct flights

Book cheap flights from Chicago to Seattle

Cheapest flights to Seattle from Chicago found in 2024

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Chicago to Seattle found on KAYAK in the last 72 hours.
10/5Fri
directAlaska Airlines
4h 37mORD-SEA
£80
7/6Fri
1 stopAlaska Airlines
9h 00mORD-SEA
£87
22/5Wed
directAlaska Airlines
4h 27mORD-SEA
£104
26/5Sun
1 stopSun Country Air
9h 25mORD-SEA
£110
26/7Fri
1 stopSun Country Air
19h 43mORD-SEA
£120
12/5Sun
1 stopUnited Airlines
9h 33mORD-SEA
£123
26/7Fri
1 stopSpirit Airlines
19h 14mORD-SEA
£131
26/5Sun
directDelta
4h 27mORD-SEA
£135
5/5Sun
directDelta
4h 36mORD-SEA
£148
29/5Wed
2 stopsUnited Airlines
19h 00mORD-SEA
£188

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Last minute flights from Chicago to Seattle

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Chicago to Seattle that are departing in the next 10 days.
2/5Thu
multi-stopSun Country Air
22h 20mORD-SEA
9/5Thu
multi-stopSun Country Air
23h 28mSEA-ORD
£252
1/5Wed
directAlaska Airlines
4h 37mORD-SEA
22/5Wed
directAlaska Airlines
4h 04mSEA-ORD
£283
29/4Mon
multi-stopAlaska Airlines
13h 30mORD-SEA
29/4Mon
directAlaska Airlines
3h 59mSEA-ORD
£304
1/5Wed
directDelta
4h 36mORD-SEA
10/5Fri
directDelta
4h 05mSEA-ORD
£307
29/4Mon
multi-stopDelta
6h 25mORD-SEA
10/5Fri
directDelta
4h 05mSEA-ORD
£314
30/4Tue
directAlaska Airlines
4h 34mORD-SEA
30/4Tue
multi-stopAlaska Airlines
13h 40mSEA-ORD
£370
1/5Wed
directDelta
4h 36mORD-SEA
4/5Sat
directDelta
3h 58mSEA-ORD
£375
1/5Wed
multi-stopSpirit Airlines
16h 55mORD-SEA
4/5Sat
multi-stopSpirit Airlines
13h 22mSEA-ORD
£404
30/4Tue
multi-stopUnited Airlines
10h 13mORD-SEA
4/5Sat
multi-stopUnited Airlines
10h 57mSEA-ORD
£442
2/5Thu
multi-stopUnited Airlines
10h 26mORD-SEA
11/5Sat
multi-stopUnited Airlines
10h 57mSEA-ORD
£445

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Chicago - Seattle Flights

Departure:

Chicago (ORD)United States

Destination:

Seattle (SEA)United States

Return flight deals:

Seattle - Chicago

Cabin classes:

£1,635
£244

Browse origins:

  • Flights » 
  • Chicago » 
  • Chicago O'Hare Airport

Browse destinations:

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  • Worldwide » 
  • Seattle