Cheap Flights from Denver to Seattle
Compare cheap flights from Denver (DEN) to Seattle (SEA) on Tripile, with fares from around $89. The route takes about 2h 45m, and May is often the best month for low prices.
Airlines on This Route
Popular airlines flying Denver to Seattle include Southwest, United, Frontier, Alaska. Compare their schedules, baggage rules, and prices side by side, then book the option that fits your trip.