Federal campgrounds: Recreation.gov
Recreation.gov handles reservations for the National Park Service, U.S. Forest Service, Bureau of Land Management, Army Corps of Engineers, and Bureau of Reclamation. Most campgrounds on it use a rolling window: each day, sites become bookable six months ahead, released at 10 a.m. Eastern (7 a.m. Pacific). Book a Tuesday in July and the window opens on the same date in January.
Popular parks are gone within minutes of release: Watchman in Zion, Upper Pines in Yosemite (Yosemite uses its own five-month block release on the 15th of the month at 7 a.m. Pacific), Mather at the Grand Canyon, most of Glacier, and the Fishing Bridge RV park in Yellowstone (run by the concessioner Xanterra, not Recreation.gov, with reservations opening about a year ahead). For those:
- Create your account and save payment details ahead of time.
- Be logged in with the campground page open five minutes before release.
- Book the last night of your stay first if the window is rolling, then extend the reservation backward as earlier dates open. Many people book the whole stay when the first night opens; the rolling window lets you grab the scarce final night instead.
- Turn on availability alerts for cancellations. A meaningful share of peak-season sites gets cancelled inside the last two weeks.
Less famous federal campgrounds, including most Corps of Engineers parks and thousands of national forest sites, have space a week ahead on weeknights and two to four weeks ahead for summer weekends. See national park RV camping for park-specific notes.
State parks: every state is different
State park windows vary from a few months to more than a year, and the systems are split among ReserveAmerica, Aspira, Brandt, US eDirect, and a few states that run their own. Examples of how far ahead reservations open:
| State | Window | Notes |
|---|---|---|
| Florida | 11 months (residents), 10 months (non-residents) | Beach and Keys parks sell out at 8 a.m. Eastern on the release day |
| Texas | 5 months | Texas Parks and Wildlife runs its own system; Garner and Inks Lake go first |
| California | 6 months, released the 1st of each month | Coastal parks are the hardest state park sites in the country |
| Michigan | 6 months | Lakeshore parks fill for July within hours |
| New York | 9 months | Includes Adirondack DEC campgrounds |
| Oregon | 6 months | Coastal parks fill for summer weekends within days |
| Utah | 4 months | Popular near Zion and Moab as the national park overflow |
Check the exact rule for each state on its reservation site; the state park hub links to the parks by state. The state park camping guide covers resident discounts and stay limits.
Private RV parks: flexible, until they are not
Most private parks and KOA locations take reservations any time, and on a weeknight in April you can usually call at 3 p.m. and get a site. The exceptions are predictable:
- Holiday weekends. Memorial Day, July 4th, and Labor Day sell out at parks near lakes, beaches, and mountains two to three months ahead, often with a three-night minimum and a no-refund policy.
- Gateway towns. Parks in Moab, Gardiner, West Yellowstone, Estes Park, Springdale, and the Smokies gateways fill for June through September by early spring.
- Events. Sturgis, Daytona Speedweeks, Quartzsite in January, Albuquerque Balloon Fiesta, college football home games, and any total solar eclipse. Rates double and parks sell out a year ahead.
- Fall color and hunting season. New England in early October and the Rockies during elk season fill weekends.
Snowbird season: book last winter
Parks in southern Arizona, the Rio Grande Valley of Texas, and central and south Florida run on monthly and seasonal contracts from November through March. Returning guests re-book the same site for next year before they leave in spring, so the best sites are gone by April for the following winter. If you want a first-year seasonal site, call in March or April, ask to be put on the cancellation list, and be flexible on the start date. Nightly sites at these parks in January are scarce and expensive; the snowbird destinations guide and monthly rates guide cover the alternatives, including BLM long-term visitor areas that need no reservation.
Shoulder season is where the deals are
The weeks after Labor Day and before Memorial Day are the best time to book almost anywhere: parks are open, weather is mild, rates drop 10 to 30 percent at private parks, and public campgrounds that were impossible in July have sites available a few days ahead. April and October in the desert Southwest, May and September in the mountains, and October in the Southeast are the sweet spots. The trade is that some northern public campgrounds shut off water in mid October, so confirm services or filter for year-round parks.
Cancellation policies: read them before you book
Recreation.gov charges a $10 cancellation fee and forfeits the first night if you cancel within two days of arrival (rules differ for group sites). State parks typically charge $10 to $25 and forfeit a night inside a few days. Private parks are all over the map: many refund with 48 to 72 hours notice, resorts often want 14 to 30 days, and holiday weekends are frequently non-refundable. Booking early is only cheap if cancelling is cheap, so when you are locking in a speculative summer plan in January, favor public campgrounds and parks with lenient policies, and set a calendar reminder for the last free cancellation date.
Frequently asked questions
How far in advance can you book on Recreation.gov?
Most campgrounds use a rolling six-month window with new dates released daily at 10 a.m. Eastern. A few, including Yosemite, use a block release on a fixed day each month, and some concession-run campgrounds (such as Yellowstone's) take reservations up to a year ahead through the concessioner. Each campground page shows its own rule.
What is the best day of the week to book a campground?
Booking for a Sunday through Thursday arrival is far easier than Friday or Saturday. If you can only travel on weekends, be ready the moment the window opens. For private parks, calling on a weekday morning reaches an office that is not busy with check-ins.
Do RV parks fill up in winter?
In the Sun Belt, yes. Florida, southern Arizona, and south Texas are at capacity from January through March with monthly guests, and nightly sites are hard to find. Everywhere else, winter is wide open, and many parks close entirely.
Can I get a refund if I cancel an RV park reservation?
Usually, with enough notice. Public campgrounds refund minus a small fee outside a two- to three-day cutoff. Private parks vary from full refunds with 48 hours notice to no refunds on holiday weekends. Always read the policy before you pay, and ask whether a deposit can be transferred to a different date instead of refunded.