Flights

Flights from Chicago to Seattle

Fares we've seen from Chicago (ORD) to Seattle (SEA) start from US$138 on 11 Dec 2026 with Frontier. Prices come from partner searches in the last 48 hours and change quickly, so look before you book.

Compare now

Compare Chicago to Seattle on your dates and see current fares from our sources, listed by price.

Compare Chicago to Seattle fares now

Fares by month

Month	Seen from	Date	Airline
October 2026	US$221	15 Oct 2026	Frontier · 1 stop	Check now
November 2026	US$152	1 Nov 2026	United · direct	Check now
December 2026	US$138	11 Dec 2026	Frontier · 1 stop	Check now
January 2027	US$146	1 Jan 2027	American Airlines · direct	Check now
February 2027	US$147	1 Feb 2027	Alaska Airlines · direct	Check now
March 2027	US$142	1 Mar 2027	Frontier · 1 stop	Check now

One-way fares in US dollars, last seen on Aviasales. They can change at any time and may not be available on every day of the month. Partner links: we may earn a commission if you book, at no extra cost to you.

Airlines on this route

Airlines we've seen with fares on this route, listed by price:

Frontier: from US$138 (with a stop)
American Airlines: from US$146 (direct)
Alaska Airlines: from US$147 (direct)
United: from US$152 (direct)

Plan the rest of your trip to Seattle

Compare on Kiwi.comAnother source for the same trip, including mixed-airline itineraries Activities & Stays in SeattleExperiences, day tours and hotel deals Things to do in SeattleTours, tickets and experiences Attraction tickets in SeattleMuseums, landmarks and shows Car rental in SeattleCompare rental cars Car rental in SeattleWorldwide car hire with free cancellation Local car hire in SeattleCar rentals from verified local suppliers Airport transfer in SeattlePre-booked door-to-door airport taxi Airport pickup in SeattleTrained English-speaking drivers meeting you on arrival Airport transfer in Seattle (Promo)Save on private transfers and shuttles with promo code Transfers in SeattleBook transfers and rides with local drivers Travel eSIMMobile data abroad without roaming fees Yesim eSIM dataGlobal eSIM with unlimited data options Saily global eSIMTravel data eSIM powered by NordVPN Luggage storage in SeattleSecure baggage storage near transit hubs Flight delayed or cancelled?Check if you're owed compensation Flight delay compensationUp to €600 compensation for flight delays or cancellations

Partner links: we may earn a commission if you book, at no extra cost to you.

Questions about Chicago to Seattle flights

How much do flights from Chicago to Seattle cost? Fares we've seen start from US$138 on 11 Dec 2026 with Frontier. Fares change quickly, so look before you book.

When can I save on flights from Chicago to Seattle? Among the next six months we checked, December 2026 had fares from US$138 in our data, while October 2026 reached US$221. Prices vary by date, so compare several days and save.

Which airlines fly from Chicago to Seattle? We've seen fares from Frontier, American Airlines, Alaska Airlines, United. This reflects recent searches, not a complete timetable.

Are there direct flights from Chicago to Seattle? Yes, we've seen direct fares (4 of 7 recent fares were direct). Availability depends on the date.

Is FindMyFlight free to use? Yes. We never add anything to the fare. If you book through a partner link we may earn a commission from the partner, at no extra cost to you.