Your next trip, last seen at €129
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The lowest fare we observed for each month. Open a month to see its days, then pick your outbound and return. A day with no price is one we will search for you.
Short answer
We have seen American Airlines fares from Chicago to Seattle, non-stop. The lowest fare our own searches returned is €129, seen on 11 Sep 2026. The average across the fares we caught is €182. December 2026 is the cheapest month in our observations, at €129. These are prices our searches returned on the dates shown, not quotes; run a live search for today's fare.
Short answer
We have seen American Airlines fares from Chicago to Seattle, non-stop. The lowest fare our own searches returned is €129, seen on 11 Sep 2026. The average across the fares we caught is €182. December 2026 is the cheapest month in our observations, at €129. These are prices our searches returned on the dates shown, not quotes; run a live search for today's fare.
About this route
Explore the fares we observed from Chicago to Seattle. Prices move often, so pick your dates to see the latest options.
- Route distance
- 2,789 km
- Reported fastest flight
- 4h 42m
- Airlines seen
- Frontier Airlines, Alaska Airlines, United Airlines, American Airlines, Delta Air Lines
- Alternative airports
- CGX, DPA, MDW, PWK, RFD, BFI
Route-level information; individual journeys vary.
Published schedules report non-stop service with American Airlines, Alaska Airlines, United Airlines, Southwest Airlines. Check current timetables.
A clearer picture of your fare
Frequently asked
How much is a flight from Chicago to Seattle?
The lowest fare we have observed is €129, found on 11 Sep 2026. Prices move, so read it as a floor rather than a quote.
When is the cheapest month to fly from Chicago to Seattle?
In our observations December 2026 is the cheapest month so far, at €129.
Are there direct flights from Chicago to Seattle?
Yes. We have seen non-stop flights on this route, flown by American Airlines, Alaska Airlines, United Airlines, Southwest Airlines.
Which airlines fly from Chicago to Seattle?
These are the carriers we have seen on the route: American Airlines, Alaska Airlines, United Airlines, Southwest Airlines.
How many of the observed Chicago to Seattle fares were non-stop?
14 of the 23 fares we observed were non-stop; the rest included at least one stop. That describes our observations, not every flight that operates.
How observed prices work, what "No data" means and what a fare includes: Read the flight price guide
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Recently observed fares. Prices may change.
Last checked: 2 Oct 2026