What is the cheapest month to fly from Seattle to Denver?

Based on current 6-month forward fare data, June 2026 is the cheapest month to fly from Seattle (SEA) to Denver (DEN), with fares starting from $94.

What is the lowest current fare from SEA to DEN?

The lowest currently-listed fare from Seattle (SEA) to Denver (DEN) is $94 on 2026-06-18.

How long is the flight from Seattle to Denver?

Direct flights from SEA to DEN cover approximately 1,645 km (1,022 miles), with an estimated flight time of 1h 56m. Operating airlines: AS, DL, F9, UA, WN.

Cheap flights from Seattle to Denver

Cheapest current fares: $94 in June 2026, 1,645 km direct flight in ~1h 56m.

Last updated May 23, 2026 · By Flightmaps Editorial

Cheapest month-by-month fares

Lowest available fare per calendar month from Seattle (SEA) to Denver (DEN). Refreshed daily.

Seattle (SEA) → Denver (DEN)

June 2026 $94
July 2026 $95

Frequently asked questions

What is the cheapest month to fly from Seattle to Denver?

Based on current 6-month forward fare data, June 2026 is the cheapest month to fly from Seattle (SEA) to Denver (DEN), with fares starting from $94.
What is the lowest current fare from SEA to DEN?

The lowest currently-listed fare from Seattle (SEA) to Denver (DEN) is $94 on 2026-06-18.
How long is the flight from Seattle to Denver?

Direct flights from SEA to DEN cover approximately 1,645 km (1,022 miles), with an estimated flight time of 1h 56m. Operating airlines: AS, DL, F9, UA, WN.

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