North Entrance - Near the gateway community of Gardiner, MT, the North Entrance is the only park entrance open to wheeled vehicles all year. November through April, the North Entrance provides the only access to Cooke City, MT. Beyond Cooke City the road is closed to wheeled vehicles November through April. The road from Mammoth to Norris is open to wheeled vehicles from the third friday in April through the first sunday in November, and to tracked oversnow vehicles from the third wednesday in December to monday of the first full week in March. Services are available year around.

West Entrance - Adjacent to the town of West Yellowstone, MT, the West Entrance is open to wheeled vehicles from the third friday in April through the first sunday in November, and to tracked oversnow vehicles from the third wednesday in December to monday of the second full week in March.  Services are available yar around.

South & East Entrances - Open to wheeled vehicles from the firt Friday of May through the first Sunday in November, and to tracked oversnow vehicles from the third wednesday in December to monday of the second full week in March. Limited services are available near the South & East Entrances. See our Road Construction Page for information about possible delays.

Northeast Entrance - Near the gateway community of Cooke City, MT, this entrance is open year around for wheeled vehicle access to Cooke City through Gardiner, MT and the North Entrance. Opening dates for roads east of Cooke City vary from year to year, depending on the weather. The Beartooth Highway is open from friday of Memorial Weekend to 8:00 am on the day following Columbus Day. Storms occasionally temporarily close the Beartooth Highway during this "open" period. Services are available year around.

Airline and Bus Transportation

Commercial airlines serve the following airports near Yellowstone National Park all year: Cody and Jackson, WY; Bozeman and Billings, MT, and Idaho Falls, ID. The West Yellowstone, MT airport is serviced from June to early September.

Bus service from Bozeman, MT to West Yellowstone, MT via Highway 191 is available all year. Bus service directly from Idaho to West Yellowstone is limited to the summer months. Commercial transportation from Bozeman, MT to Gardiner, MT is available during the winter and summer seasons. Commercial transportation to the park from Cody and Jackson, WY is available during the summer season.