Title: CA $123 Cheap Alaska Airlines fights from Seattle to Chicago - Expedia.ca ![City of Chicago. Image of Chicago downtown and Chicago River with bridges at sunny summer day](https://images.trvl-media.com/place/178248/e6aa83ce-7ad8-43a5-9d1d-b055eefa7e78.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/178248/e6aa83ce-7ad8-43a5-9d1d-b055eefa7e78.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # CA $123 Cheap Alaska Airlines fights from Seattle (SEA) to Chicago (ORD) [View CA $123 flight on Sun, Feb 15, 2026](https://expedia.ca/Flights-Search?trip=oneway&leg1=from:SEA,to:ORD,departure:15/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:122.20&airProductToken=AQovCi0IwaYBEgMyNjUYkgEgrhwou56FAzC1oIUDOFhAAFgBagJTVnIIT0gyT0FWQk4SCggBEAEYASoCQVMYASIECAEQASgCKAMoBDAB) - [Roundtrip](?flightType=roundtrip) - [One-way](?flightType=oneway) - [Multi-city](?flightType=multicity) ### Travellers Adults ChildrenAges 2 to 17 InfantsYounger than 2 EconomyPremium economyBusiness classFirst class Leaving from Going to Departing Returning Add a place to stay Add a car Direct flights only - ![notification illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__notification.svg) ### Be in the know Get alerts if flight prices drop or rise\* - ![deals illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__deals.svg) ### Book smarter Save up to 30% on select hotels after you book a flight\* - ![trophy illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__trophy.svg) ### Earn twice Earn your airline miles on top of our rewards [Sign in](https://www.expedia.ca/login) ## Alaska Airlines flights from Seattle to Chicago (SEA→ORD) Prices were available within the past 7 days and start at CA $123 for one-way flights and CA $183 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Wed, Feb 4 - Fri, Feb 6 SEA Seattle ORD Chicago CA $183 Roundtrip found 6 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:SEA,to:ORD,departure:04/02/2026TANYT&leg2=from:ORD,to:SEA,departure:06/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:182.79&airProductToken=AQovCi0IwaYBEgM0MTAYkgEgrhwolKSEAzCOpoQDOFhAAFgBagJTVnIIR0gyT0RWQk4SCggBEAEYASoCQVMYASIECAEQASgCKAMoBDAB) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Fri, Dec 26 - Tue, Jan 6 SEA Seattle ORD Chicago CA $211 Roundtrip found 5 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:SEA,to:ORD,departure:26/12/2025TANYT&leg2=from:ORD,to:SEA,departure:06/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:210.95&airProductToken=AQovCi0IwaYBEgM0MTAYkgEgrhwo6N-AAzDl4YADOFhAAFgBagJTVnIIT0gyT0FWQk4SCggBEAEYASoCQVMYASIECAEQASgCKAMoBDAB) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Wed, Jan 7 - Thu, Jan 8 SEA Seattle ORD Chicago CA $215 Roundtrip found 6 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:SEA,to:ORD,departure:07/01/2026TANYT&leg2=from:ORD,to:SEA,departure:08/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:214.80&airProductToken=AQovCi0IwaYBEgMyNjUYkgEgrhwo_ueBAzD26YEDOFhAAFgBagJTVnIIT0gyT0RWQk4KLwotCMGmARIDNDA5GK4cIJIBKOb2gQMwiPmBAzhYQABYAWoCU1ZyCEdIMk9aVkJOEgoIARABGAEqAkFTGAEiBAgBEAEoAigDKAQwAQ) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Thu, Jan 8 - Mon, Jan 12 SEA Seattle ORD Chicago CA $216 Roundtrip found 5 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:SEA,to:ORD,departure:08/01/2026TANYT&leg2=from:ORD,to:SEA,departure:12/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:215.90&airProductToken=AQovCi0IwaYBEgMyNjUYkgEgrhwonvOBAzCW9YEDOFhAAFgBagJTVnIIT0gyT0FWQk4KLwotCMGmARIDNTg3GK4cIJIBKIifggMwpqGCAzhYQABYAWoCU1ZyCEdIMk9aVkJOEgoIARABGAEqAkFTGAEiBAgBEAEoAigDKAQwAQ) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Thu, Mar 5 - Sun, Mar 8 SEA Seattle ORD Chicago CA $235 Roundtrip found 6 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:SEA,to:ORD,departure:05/03/2026TANYT&leg2=from:ORD,to:SEA,departure:08/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:234.44&airProductToken=AQovCi0IwaYBEgM1MzgYkgEgrhwo0-2GAzDE74YDOFhAAFgBagJTVnIIR0gyT0FWQk4SCggBEAEYASoCQVMYASIECAEQASgCKAMoBDAB) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Sun, Feb 15 - Fri, Feb 20 SEA Seattle ORD Chicago CA $245 Roundtrip just found [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:SEA,to:ORD,departure:15/02/2026TANYT&leg2=from:ORD,to:SEA,departure:20/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:244.30&airProductToken=AQovCi0IwaYBEgM1MzgYkgEgrhwok6OFAzCEpYUDOFhAAFgBagJTVnIIT0gyT0FWQk4KLwotCMGmARIDNTg3GK4cIJIBKKzVhQMwz9eFAzhYQABYAWoCU1ZyCE9IMk9BVkJOEgoIARABGAEqAkFTGAEiBAgBEAEoAigDKAQwAQ) __Flight from Seattle to Chicago (SEA - ORD) route information__ | Origin airport | Seattle - Tacoma Intl. | | ------------------- | ------------------------------------------------------------------------------------------ | | Destination airport | O'Hare Intl. | | Airlines serving | Alaska Airlines, American Airlines, Delta, Hawaiian Airlines, Sun Country Airlines, United | | Popular airline | Alaska Airlines | | Distance | 2745 km | | Average flight time | 6 hours 6 mins | ## Frequently asked questions ### How much is an Alaska Airlines flight from Seattle - Tacoma Intl. Airport (SEA) to O'Hare Intl. Airport (ORD)? ### What is the cheapest month to fly from SEA to ORD with Alaska Airlines? ### Does Alaska Airlines fly nonstop from Seattle - Tacoma Intl. Airport (SEA) to O'Hare Intl. Airport (ORD)? ### How long does it take to fly from SEA to ORD with Alaska Airlines? ### Which day of the week has the most Alaska Airlines flights from Seattle - Tacoma Intl. Airport (SEA) to O'Hare Intl. Airport (ORD)? ### What airports does Alaska Airlines fly into in Chicago? ### What type of plane does Alaska Airlines fly from Seattle - Tacoma Intl. Airport (SEA) to O'Hare Intl. Airport (ORD)? ### Can I change or cancel my Alaska Airlines flight from Seattle - Tacoma Intl. Airport (SEA) to O'Hare Intl. 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