Route Price Intelligence
Cheap Flights From Seattle to Denver
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Frontier's nonstop SEA-DEN run typically costs around $164, and it just fell to $66, a 60% discount that lands close to the cheapest fare we've ever seen on this route. Denver is an easy jumping-off point for Rocky Mountain hiking this fall and an early start to ski season a bit later in the winter. It is a quick, cheap way to get out of town for a long weekend.
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Best Time to Fly from Seattle to Denver
The cheapest time to fly from Seattle to Denver is typically October, when fares average around $164. The most expensive month tends to be July at around $350. For the best deals, consider flying in October, August, September.
Typical Price by Travel Month
Median round-trip fare for each month, with the typical price range, from our ongoing tracking of this route