Route Price Intelligence
Cheap Flights From Denver to Seattle
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Seattle nonstop on Frontier is $81 round trip, a full 61% below the usual $208 fare and one of the best prices we have tracked on this route. Book for late summer or fall travel and use it for a Pike Place Market run, a ferry ride across Puget Sound, or a jumping-off point for the San Juan Islands.
✓ 9 date combinations found at this price
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Best Time to Fly from Denver to Seattle
The cheapest time to fly from Denver to Seattle is typically May, when fares average around $168. The most expensive month tends to be January at around $316. For the best deals, consider flying in May, August, June.
Typical Price by Travel Month
Median round-trip fare for each month, with the typical price range, from our ongoing tracking of this route