DIA (Denver International Airport) is the main commerical airport serving the Rocky Region.
It is a 90 minute drive from Estes Park. Rent a car to drive yourself, or pay to take an Airport Shuttle Bus to your lodging.
Once in Estes Park, free Visitor Shuttles are available during summer around Estes Park, and into Rocky Mountain National Park. Paid taxi services are also available.
Fort Collins/Loveland Municipal Airport 970-962-2850
Boulder Municipal Airport 303-441-3108
Kremmling Airport 970-724-0611
Granby Airport 970-725-3347
Driving to Rocky Mountain National Park from the East side, you will arrive at Estes Park, Colorado via either Highway 34 or 36 from the Front Range (Denver/Boulder/Loveland/Fort Collins area).
The drive up Big Thompson Canyon (CO Highway 34) is spectacular - you may even spot some Rocky Mountain Sheep on the steep canyon walls as you follow the river's steep descent from the high mountains.
Approaching from the West side or I70 to the south via Highway 40, you will arrive at Grand Lake, Colorado by turning north on Highway 34.
The Peak to Peak Highway (119 to 72 to 7) runs north-south from Estes Park to I70 and is a much slower but scenic drive.
Trail Ridge Road (Highway 34) connects the two sides of the Park, crossing the Continental Divide at 12,183 ft.