Thompson Flat
Sold out? Sites at Thompson Flat open up when campers cancel.
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About Thompson Flat
Thompson Flat is a national park campground at Sawtooth National Forest in Cassia County, Idaho. Reservations are managed through Recreation.gov. Instead of refreshing Recreation.gov, let Campsite Tonight watch for cancellations and automatically drop an open site into your cart the instant one frees up.
Thompson Flat is in very high demand — sites here routinely sell out well in advance. Cancellations are often the best way in, which is exactly what Campsite Tonight watches for.
The campground accommodates RVs and trailers up to 60 ft. Campers rate it 4.6/5 across 60 reviews.
Other campgrounds at Sawtooth National Forest include Twin Lakes Campground (Sawtooth), Lake Cleveland - East Side, Lake Cleveland Campground - West Side, Steer Basin Campground and Schipper Campground.
Total reservations in July — 2023: 70 · 2024: 58 · 2025: 65
Location
Address
Burley, Idaho
Coordinates
42.3247, -113.6236
Very high demand - sites typically fill up immediately when the booking window opens. Plan to book the moment reservations open.
- •August sees 74 reservations - book early or set cancellation alerts.
Nearby Campgrounds
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Twin Lakes Campground (Sawtooth)
Sawtooth National Forest
Lake Cleveland - East Side
Sawtooth National Forest
Lake Cleveland Campground - West Side
Sawtooth National Forest
Steer Basin Campground
Sawtooth National Forest
Schipper Campground
Sawtooth National Forest
Porcupine Springs
Sawtooth National Forest
Photos
Thompson Flat FAQ
How far in advance should I book Thompson Flat?
Very high demand - sites typically fill up immediately when the booking window opens. Plan to book the moment reservations open. Mark your calendar for when the booking window opens (typically 5-6 months ahead). Also set alerts - cancellations do happen.
What is the busiest time at Thompson Flat?
August typically sees the highest reservation activity at Thompson Flat. During peak times, 100% of reservations are made 2+ weeks in advance.
Are there campsites available at Thompson Flat right now?
Thompson Flat is currently fully booked for the next 14 days. However, cancellations happen frequently - download the Campsite Tonight app to get instant alerts when sites become available.
Where is Thompson Flat located?
Thompson Flat is located in Sawtooth National Forest, near Burley, Idaho.
Track Availability at Thompson Flat
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