Cheap flights from Chicago to Seattle
Fares from $121 in December 2026. Compare every month below, then book with the site you like.
Search Chicago → Seattle flightsCheapest Chicago to Seattle fares by month
Lowest price per person found in recent searches. Prices change often and are checked when you book.
- November 2026Nov 6 · one way · Alaska Airlines · Direct$132See deal
- December 2026Dec 13 · one way · Frontier · 1 stop$121See deal
Chicago to Seattle at a glance
- Distance1,716 miles
- Nonstop flight timeabout 4h 15m
- Cheapest monthDecember 2026
- Airport codesCHI → SEA
Plan your Seattle trip
Cheap hotels in SeattleCheap car rental in SeattleThings to do in SeattleFlights from Seattle to Chicago
Travel guides
Frequently asked questions
- How much is a flight from Chicago to Seattle?
- The cheapest fare we found recently is $121 per person, departing Dec 13 on Frontier. Prices change daily, so search your dates to see today's fares.
- What is the cheapest month to fly from Chicago to Seattle?
- December 2026 is currently the cheapest month, from $121. November 2026 is the most expensive, from $132.
- Are there direct flights from Chicago to Seattle?
- Yes. Recent searches found nonstop fares from $132.
- Which airlines fly from Chicago to Seattle?
- The cheapest recent fares on this route were on Alaska Airlines, Frontier.
- How long is the flight from Chicago to Seattle?
- Chicago and Seattle are about 1,716 miles apart, so a nonstop flight takes roughly 4h 15m. Flights with a stop take longer, depending on the connection.
- How do I find the cheapest flight from Chicago to Seattle?
- Search your dates on Gotoesy. We list fares from several booking sites sorted cheapest first, show nearby dates when your day has no saved fare, and send you straight to the seller to book.
More flights from Chicago
- Chicago to New York
- Chicago to Los Angeles
- Chicago to Miami
- Chicago to Orlando
- Chicago to Las Vegas
- Chicago to San Francisco
- Chicago to Washington, D.C.
- Chicago to Boston
- Chicago to Atlanta
- Chicago to Dallas
- Chicago to Houston
- Chicago to Denver