Big Arm Unit - Flathead Lake State Park Campground
Montana
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As of October 2026, Big Arm Unit - Flathead Lake State Park Campground is a campground in Montana with 46 campsites. Big Arm Unit - Flathead Lake State Park Campground is booked through Montana State Parks.
- PermitSnag checks Big Arm Unit - Flathead Lake State Park Campground for availability and tells alert holders when a site opens up.
- Big Arm Unit - Flathead Lake State Park Campground is located at 47.8110° N, 114.3120° W.
Big Arm Unit - Flathead Lake State Park Campground reservations and next available dates
October 2026
Campsites at Big Arm Unit - Flathead Lake State Park Campground
At a glance: Setting: Mountain.
Things to do: boating, photography, horse riding.
About Big Arm Unit - Flathead Lake State Park Campground
The park is located on the southwest shore of Flathead Lake and offers spectacular views of the Mission Mountains. It is a popular launch spot to Wild Horse Island. Many of the 40 campsites are situated along the shoreline.
Reserve America state parks campground cancellations →
Big Arm Unit - Flathead Lake State Park Campground FAQ
How hard is it to get a campsite at Big Arm Unit - Flathead Lake State Park Campground?
Big Arm Unit - Flathead Lake State Park Campground is rated "Hard to Book" based on historical demand. This campground is popular and often books out weeks in advance. Your best strategy is to monitor cancellations.
How do I find last-minute availability at Big Arm Unit - Flathead Lake State Park Campground?
Cancellations happen frequently at Big Arm Unit - Flathead Lake State Park Campground, especially 1-2 weeks before check-in dates. PermitSnag monitors availability 24/7 and sends instant alerts when sites open up due to cancellations. This is often the best way to snag popular campsites.
How many campsites does Big Arm Unit - Flathead Lake State Park Campground have?
Big Arm Unit - Flathead Lake State Park Campground has 46 campsites.
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