Cheap flights to Rocky Mountain National Park from Seattle

Round trips from Seattle from $145. Fly into Denver (DEN). Cheapest dates, deal ratings and where to book.

• Denver: $145, 2026-10-28 to 2026-11-01
• Denver: $188, 2026-12-03 to 2026-12-04
• Denver: $241, 2026-12-30 to 2027-01-04
• Denver: $296, 2026-12-30 to 2027-01-03

Nearby

• Black Canyon of the Gunnison
• Great Sand Dunes
• Arches
• Wind Cave
• Mesa Verde
• Canyonlands
• Badlands
• Capitol Reef