Reserve a Lodge

Mammoth Hot Springs Hotel sold out? How to still get a room

Mammoth Hot Springs Hotel is one of the lodges inside Yellowstone National Park, and it books up soon after dates open. Rooms keep coming back when other guests cancel, though, so "sold out" usually just means "not right now".

Mammoth Hot Springs Hotel, Yellowstone National Park

When bookings open

Rooms open about 13 months ahead.

Deposit and cancelling

The deposit is the first night. The refund deadline is in your confirmation, so check it there; it is the moment rooms tend to come back.

Season

Open in summer and again for the winter season.

Book direct

Yellowstone National Park Lodges (Xanterra) runs the lodge. Book there rather than through a third-party site, whose terms can differ.

How to catch a cancellation

  1. Check at the refund deadline. Look hardest just before the lodge's refund deadline for your dates (it's in the booking terms). Guests whose plans changed cancel right before it, and those rooms go straight back on sale.
  2. Check twice a day, every day. Rooms often come back one night at a time and go quickly. You can also call the reservations office at 307-344-7311; it's worth asking about single nights.
  3. Grab part of your stay. If one night opens, book it and keep looking for the others. Adding a night to a booking you already hold is often easier than finding a whole stay at once.
  4. Say yes to more room types. Mammoth Hot Springs Hotel has several room types, including Deluxe 1 King; Suite 2 Queen; and Deluxe 2 Queen. The less popular ones come back more often.
  5. Be ready to pay right away. Have the deposit card at hand; a room you hesitate on goes to the next person refreshing.
  6. Keep a backup. Hold a refundable room outside the park, or at another lodge nearby, and cancel it if your first choice comes through.

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Other lodge guides

Booking rules come from the lodge's official site and the National Park Service where available, checked November 2026. Lodges change their policies, so confirm the details when you book.