Idaho’s commercial hot springs are the developed side of soaking: private resorts and pools where the water is managed, the facilities are built, and many offer lodging, food and day use passes. This collection gathers them, from historic resort towns to small family run pools. Expect admission fees and house rules in exchange for reliability: consistent temperatures, maintained pools, and an easy first soak for newcomers.
In the unincorporated community of Paradise, near Featherville in Elmore County, Trinity Hot Springs is a private membership club built around one large outdoor pool on Grouse Creek, just off the South Fork Boise River. The pool is fed directly by the spring and kept untreated and chemical free, and the water behind it carries…
Challis Hot Springs is a developed, state-run soak on the Salmon River, about 8 miles east of Challis: two outdoor pools with natural gravel and river-rock bottoms, a riverside campground, and a soaking history that runs back to 1880. If the name is new to you, the place is not. For most of its life…
At the end of Grandjean Road, where the gravel runs out at the edge of the Sawtooth Wilderness, Sawtooth Lodge has been soaking travelers since 1927. The lodge is a private, historic outpost on the South Fork of the Payette River: log cabins, yurts, tent meadows, an RV park, a restaurant, and a geothermal pool…
Deep in the Nez Perce-Clearwater National Forest east of Elk City, Red River Hot Springs is a developed, year-round resort built around a set of natural hot springs: a large outdoor swimming pool, three soaking tubs, and a lodge where some rooms let you soak in private without leaving your bathroom. The resort runs on…
North of Ketchum on State Highway 75, Easley Hot Springs is a developed, family friendly soaking complex in the Sawtooth National Recreation Area: a full size outdoor swimming pool fed directly by the springs, two soaking tubs overlooking it, and a small general store. The complex sits on Sawtooth National Forest land and is run…
Nat Soo Pah Hot Springs & Campground is a family owned hot springs resort in the high desert farmland south of Twin Falls. It is an old fashioned summer soak: a very large geothermal swimming pool with a waterslide and diving boards, a hotter soaking pool, a hydro jet tub, and a grassy RV park…
Mountain Village Resort’s hot springs in Stanley, Idaho, have grown well beyond the single pool the old listings describe: today there are three soaking tubs along Valley Creek — the long-standing Osprey Hot Spring plus two newer private tubs, Sandhill Crane and Bluebird — all with astounding views of the Sawtooth Mountains, and all soaked by reservation only.
Burgdorf Hot Springs is a historic, rustic hot springs resort and ghost town on private land surrounded by the Payette National Forest, about 30 miles north of McCall, Idaho. Founded in the 1870s, Burgdorf soaks visitors in three historic log-sided pools fed by two ~113°F sources — and today it runs reservation-only, booked online in advance.
Banbury Hot Springs near Buhl, Idaho, is now owned by Miracle Hot Springs and reopened in 2026, offering a large general pool, individual private pools and lodging.
Indian Springs Resort & RV is a commercial hot springs resort and campground in American Falls, Idaho, centered on “The Nat,” a historic pool with slides and a jumping board, open seasonally from May 9 to September 22. Swim prices run $9.50–$11.50 for ages 12+, and tent, RV, and car camping are open year-round.
Riverside Hot Springs Inn & Spa is a historic 1914 adults-only inn in Lava Hot Springs, Idaho, with three indoor private soaking tubs and one outdoor tub included with an overnight stay. Its 18-room hotel adds the Portneuf Grille & Lounge and a continental breakfast, at 255 East Portneuf Street.
Bear River Hot Springs (formerly Riverdale Resort) is a year-round natural mineral hot springs resort five miles north of Preston, Idaho, with four pools including a hot tub and a therapy pool. Lodging includes an 8-room hotel with in-room jetted Jacuzzi tubs, plus cabins, RV sites, and camping at 3696 N 1600 E, Preston.
Maple Grove Hot Springs sits on the Bear River at the north end of Oneida Narrows Reservoir near Thatcher, Idaho, with six natural lithium mineral pools running 100–107°F. Soaking is by reservation in 3-hour sessions — $18 weekday, $22 weekend — and the springs close Wednesdays.
Lava Hot Springs Inn & Spa is a historic inn in downtown Lava Hot Springs, Idaho, with 6 outdoor mineral pools ranging from 94 to 107°F plus a 44° cold plunge pool. Public soaking passes are $15 with pools open daily 7 AM to 11 PM, and lodging includes a full hot buffet breakfast.
Home Hotel Lava Hot Springs is a historic hotel in Lava Hot Springs, Idaho, operating since 1918 and known for private in-room natural mineral hot springs in over-sized two-person baths in most rooms. Check-in is 3:00 PM and check-out is 11:00 AM, with a 24-hour front desk at 306 E Main St.
Downata Hot Springs is a family-run resort south of Downey in South-East Idaho, built around a natural hot spring flowing at about 109 degrees. Its 300,000-gallon recreation pool with slides, quieter hot soaking pools, restaurant, spa, and campground make it a full-service stop.
Epic Hot Springs (formerly Bear Lake Hot Springs) is a beachside soak on North Beach at Bear Lake near St. Charles, Idaho, with two shallow outdoor pools held at about 103°F and lake beach access included with admission. It is open daily in summer and closed for the winter season; rates are not published online, so call (208) 242-8589 before visiting.
The Lava Hotel & Spa (formerly Aura Soma Lava Hot Springs) in Lava Hot Springs, Idaho, has a large hot springs soaking pool open daily from 8:00 AM to 11:00 PM for overnight guests. Lodging spans 5 rental homes — 3 with private natural mineral pools — and 2 motels, with a conference center, the on-site Lava Spa, and Liège waffles at Lava Waffle in the lobby.
Zims Hot Springs is a Nez Perce Tribe-operated hot springs a few miles outside New Meadows, Idaho, with outdoor mineral pools fed by an artesian well — a small pool at 100–105°F and a large pool at 90–100°F. Day use is $13 for adults, $8 for children, and $10 for seniors, with RV parking and camping on site.
Twin Springs Resort is a rustic, off-grid hot springs resort on the Middle Fork of the Boise River northeast of Boise, established in 1898. Riverfront cabins from $160 per night each have a private hot tub, with a shared sauna for guests.
Silver Creek Plunge is a remote mountain hot springs resort in the Boise National Forest north of Crouch, Idaho, built around a large geothermal pool kept near 100°F. Cabins, A-frames and campsites make it a Garden Valley base camp; day swim is $15 for adults.
Gold Fork Hot Springs is a commercial hot springs near Donnelly, Idaho, with 6 natural mineral pools — including a soft white-sand-bottom pool — fed by alkaline, lithium-rich water. Admission is $15 per person (cash only, 2-hour maximum stay); open year-round, closed Tuesdays.
Roystone Hot Springs is a reservation-only hot springs, RV park, and event center in Sweet, Idaho, about 45 minutes from the Treasure Valley. Every soak is private to the reserving group; the pool runs 93–98°F and the jetted hot tub about 104°F.
The Springs is a hot springs resort on Highway 21 near Idaho City, Idaho, with a 40′ x 80′ geothermal pool, a 104° hot tub, a steam room, massage services, and private tubs. Soak sessions run $30 for adults and $27 for children; reservations are required.
