Cheap Flights from Chicago to Seattle
We've found these cheap flights for you. You can book one-way or return flight tickets.
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Flights from Chicago to Seattle
Airlines Flying from Chicago to Seattle
Compare prices, find the option that best suits your travel needs, and enjoy a comfortable journey with a trusted airline.
Flight deals from Chicago to Seattle
We've found these cheap flights for you. You can book one-way or return flight tickets.
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Round-trip
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One way
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Cheapest nonstop
ORD 06:004h 37mDirectSEA 08:37Chicago - Seattle | Wed, Aug 6 | Alaska Airlines
SEA 23:404hDirectORD 05:40Seattle - Chicago | Tue, Aug 12 | Alaska Airlines£76 £12036% OFF36% OFF£120 £76 -
ORD 18:154h 40mDirectSEA 20:55Chicago - Seattle | Tue, Aug 5 | Delta Air Lines
SEA 17:504h 1mDirectORD 23:51Seattle - Chicago | Wed, Aug 13 | Delta Air Lines£77 £12036% OFF36% OFF£120 £77 -
ORD 18:154h 40mDirectSEA 20:55Chicago - Seattle | Wed, Aug 6 | Delta Air Lines
SEA 17:504h 1mDirectORD 23:51Seattle - Chicago | Tue, Aug 12 | Delta Air Lines£79 £12034% OFF34% OFF£120 £79
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ORD 07:114h 34mDirectSEA 09:45Chicago - Seattle | Tue, Jul 15 | Delta Air Lines
SEA 17:554h 1mDirectORD 23:56Seattle - Chicago | Tue, Jul 22 | Delta Air Lines£9025% OFF£120 £90
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ORD 20:424h 42mDirectSEA 23:24Chicago - Seattle | Tue, Aug 5 | Alaska Airlines
SEA 17:544h 5mDirectORD 23:59Seattle - Chicago | Fri, Aug 8 | Alaska Airlines£10016% OFF£120 £100
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ORD 06:004h 37mDirectSEA 08:37Chicago - Seattle | Wed, Jun 18 | Hawaiian Airlines
SEA 22:554h 5mDirectMDW 05:00Seattle - Chicago | Tue, Jun 24 | Southwest Airlines£10016% OFF£120 £100 -
ORD 20:424h 42mDirectSEA 23:24Chicago - Seattle | Fri, Aug 8 | Alaska Airlines
SEA 16:254h 5mDirectORD 22:30Seattle - Chicago | Thu, Aug 14 | Alaska Airlines£10016% OFF£120 £100
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ORD 06:004h 37mDirectSEA 08:37Chicago - Seattle | Wed, Jun 18 | Alaska Airlines
SEA 22:554h 5mDirectMDW 05:00Seattle - Chicago | Tue, Jun 24 | Southwest Airlines£10115% OFF£120 £101
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ORD 20:424h 42mDirectSEA 23:24Chicago - Seattle | Wed, Jul 30 | Alaska Airlines
SEA 17:544h 5mDirectORD 23:59Seattle - Chicago | Tue, Aug 5 | Alaska Airlines£10611% OFF£120 £106
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ORD 06:004h 37mDirectSEA 08:37Chicago - Seattle | Thu, Aug 7 | Alaska Airlines
SEA 17:544h 5mDirectORD 23:59Seattle - Chicago | Mon, Aug 11 | Alaska Airlines£10711% OFF£120 £107
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CHI 13:0017h 25m1 stopsSEA Invalid DateChicago - Seattle | Thu, Jun 12 | Normal Airline
SEA 15:006hDirectCHI 16:00Seattle - Chicago | Sat, Jun 14 | Normal AirlineFind More FlightsFind More Flights
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Cheapest nonstop
ORD 18:154h 40mDirectSEA 20:55Chicago - Seattle | Tue, Aug 5 | Delta Air Lines£39 £30287% OFF87% OFF£302 £39
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ORD 20:424h 42mDirectSEA 23:24Chicago - Seattle | Thu, Aug 7 | Hawaiian Airlines£44 £30286% OFF86% OFF£302 £44
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ORD 13:034h 39mDirectSEA 15:42Chicago - Seattle | Thu, Aug 7 | Alaska Airlines£45 £30285% OFF85% OFF£302 £45
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ORD 06:004h 27mDirectSEA 08:27Chicago - Seattle | Wed, Jun 11 | Alaska Airlines£4585% OFF£302 £45
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ORD 20:424h 42mDirectSEA 23:24Chicago - Seattle | Tue, Aug 5 | Hawaiian Airlines£6878% OFF£302 £68
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ORD 20:424h 42mDirectSEA 23:24Chicago - Seattle | Tue, Aug 5 | Alaska Airlines£6877% OFF£302 £68
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ORD 06:004h 37mDirectSEA 08:37Chicago - Seattle | Wed, Jun 25 | Hawaiian Airlines£12060% OFF£302 £120
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ORD 06:004h 37mDirectSEA 08:37Chicago - Seattle | Wed, Jun 18 | Alaska Airlines£16844% OFF£302 £168
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ORD 06:004h 27mDirectSEA 08:27Chicago - Seattle | Wed, Jun 11 | Hawaiian Airlines£25515% OFF£302 £255
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ORD 07:094h 36mDirectSEA 09:45Chicago - Seattle | Wed, Jun 11 | Delta Air Lines£26911% OFF£302 £269
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CHI 13:0017h 25m1 stopsSEA Invalid DateChicago - Seattle | Thu, Jun 12 | Normal AirlineFind More FlightsFind More Flights
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Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.
Flight Information from Chicago to Seattle
| Cheapest one-way flight price | £29 |
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| Cheapest return ticket price | £75 |
| Off-season travel month | April |
| Peak season for travel | June |
| Flight distance | 2,785.86km |
| Average flight time | 4 hours 36 minutes |
| Popular airline | Alaska Airlines |
Find the best time to fly from Chicago to Seattle
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Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.
FAQ
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When are flight tickets from Chicago (CHI) to Seattle (SEA) the cheapest?
Airlines adjust prices for flights from Chicago to Seattle based on the date and time of your booking. By analyzing data from all airlines, on Trip.com, you can find the cheapest flight prices on Tuesdays, Wednesdays, and Saturdays. -
How much are flights from Chicago (CHI) to Seattle (SEA) cost?
According to Trip.com's data, the lowest price is around £203. -
How long is the flight from Chicago (CHI) to Seattle (SEA)?
It takes about 4 hours 36 minutes to fly from Chicago (CHI) to Seattle (SEA). -
What are the most popular airlines that fly from Chicago (CHI) to Seattle (SEA)?
Airlines with flights from Chicago (CHI) to Seattle (SEA): Aer Lingus, American Airlines, Air Tahiti Nui, Southwest Airlines, Qatar Airways, Scandinavian Airlines, avianca, Hawaiian Airlines, Iberia, United Airlines, Alaska Airlines, Gulf Air and Delta Air Lines. -
How many airports in Seattle (SEA)?
There are 3 airport(s) in Seattle (SEA): King County (Boeing Field) International Airport, Lake Union Sea Plane Base and Seattle–Tacoma International Airport.
How to find a cheap flight from Chicago to Seattle
Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from Chicago to Seattle. Book your flights at the right time and save more.
Be flexible with your travel dates to get the cheapest flight from Chicago to Seattle.
Simply tap "Date" on the flight search bar to browse through the calendar and check out airfare from Chicago to Seattle over the next 6 months in 2025. If you're planning to fly within the next three months, it looks like the most affordable option is on Tue, Aug 5, with one-way flights priced at just £39.
Compare cheap flight deals from Chicago to Seattle across hundreds of airlines.
With our extensive search, you can compare prices from over 500 airlines to find the cheapest flight tickets from Chicago to Seattle. The cheapest airline for this route is Delta Air Lines.
Set up a Price Alert
By setting up a Price Alert for your journey from Chicago to Seattle, you can easily keep an eye on ticket prices without having to check every day.
Don't miss out on cheap flight deals and promo codes from Chicago to Seattle.
You can always find the latest offers through Trip.com Deals and Promo Codes for cheap flights. By signing up for a free membership, you'll get access to even more deals for your flights.
Book early or wait until the last minute.
It's usually best to book early. Flight tickets are often cheapest when they're first released, typically about a year before the departure date. So, have a look online as soon as the flights you're interested in become available. If you miss the cheapest time, you might still find some good deals as the departure date gets closer.
Search for flights on the go.
For the best travel flight booking experience, download the Trip.com app. You can search for cheap flights from Chicago to Seattle and snag some exclusive deals just for you.
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