How to reserve Flat
Reservations are made on Recreation.gov. The booking window depends on the campground. Open the campground's Seasons & Fees or Seasons & Booking tab. Confirm its release date and time; there is no single rule for all Recreation.gov sites or permits.
Checked September 9, 2026 against the official reservation rules.
When your dates are full, choose your arrival and departure dates and campsite preferences. We check the booking calendar on an adaptive schedule and notify you when a check finds a match. Choose email or text for each alert; enable browser notifications separately for all your alerts.
Free while we're in beta — no credit card required. OpenCampsite sends alerts; booking and payment stay on the booking website.
More campgrounds in Okanogan-Wenatchee National Forest
Campgrounds near Flat
- Pearrygin Lake State Park8 mi
- Lmuma Creek18 mi
- Oriole Campground19 mi
- Conconully State Park21 mi
- Harlequin Campground30 mi
- Lost Lake Campground (WA)41 mi
- Colonial Creek South Campground41 mi
- Colonial Creek North Campground42 mi
Straight-line distance.
More Washington campground alerts
Camper photos & reviews
Share a visit to Flat. Photos and reviews appear after admin approval. Use a public name and leave out contact details.
No camper photos or reviews to show yet. Share your experience.
Sign in to add a photo or review, report a contribution, or hide a camper’s posts.