Cheap flights from Kansas City to Seattle
from 144 US$
Compare hundreds of airlines Kansas City–Seattle
The cheapest month is usually 2026-09 · 144 US$
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About this route
Compare flights from Kansas City to Seattle, a about 2,421 km route (around 3h 32m nonstop). We gather live prices from hundreds of airlines and agencies so you can find the cheapest and book on the official site, with no hidden fees. Direct flights are available. Airlines such as Alaska Airlines, Delta, Southwest Airlines operate this route.
When to buy and when to fly
Prices by date
Fares found by date — cheapest days in green.
How to get the best price
Airlines on this route
FAQ
What's the cheapest month to fly Kansas City to Seattle?
It's usually 2026-09, from 144 USD. Use the price calendar to compare other dates.
How long is the flight from Kansas City to Seattle?
A nonstop flight takes about 3h 32m and covers around 2,421 km. Connecting itineraries take longer.
Are there direct flights from Kansas City to Seattle?
Yes, this route has nonstop flights. Filter by "nonstop" to see them.
Which airlines fly from Kansas City to Seattle?
Alaska Airlines, Delta, Southwest Airlines operate this route, among others. Compare them all in the results.
When should I book Kansas City–Seattle flights?
As a rule of thumb, booking 3–8 weeks ahead and avoiding weekends and holidays tends to give the best prices. Use the calendar to spot the cheapest dates.
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Kansas City → Seattle · Live fares from 100+ sites — free, with no hidden fees.