To book a hotel room in the United States, you generally have to be at least 18 years old, and some properties set the minimum at 21. There is no federal law on this; each hotel or chain writes its own policy, so the answer depends on the brand, the specific property, and sometimes the destination. The gap between turning 18 and being welcomed everywhere catches a lot of young travelers off guard.
Why the Minimum Is 18 (or 21)
A hotel reservation is a contract. You agree to pay and follow the property’s rules; the hotel agrees to give you a room. In every state, people under 18 generally can’t enter a binding contract, and any agreement a minor signs is voidable at the minor’s option. That leaves a hotel with little recourse if an underage guest damages a room, skips out on charges, or disputes a bill. Setting the floor at 18 lines up with the age of majority and gives the property an enforceable agreement.
Properties that require 21 usually point to alcohol. Rooms with minibars, resorts with poolside bars, and hotels in nightlife-heavy areas don’t want unsupervised alcohol access on premises for anyone under the drinking age. Casino resorts add another layer: gaming laws in most jurisdictions require patrons to be 21, and hotel floors often connect directly to the gaming floor.
What the Major Chains Require
Chain-wide policies give you a starting point, but individual properties within the same brand can set a higher floor.
- Marriott sets the minimum age at each individual hotel. Most properties accept guests at 18, but some all-inclusive resorts and adult-only properties require 21.1Marriott Help Center. What Is the Minimum Age Required to Check-In?
- Hilton requires guests to be at least 18 to reserve a room through its website, and advises anyone under 18 to contact the hotel directly.2Hilton. Site Usage Agreement
- Hyatt’s general minimum is 21, which makes it one of the stricter major chains. Individual hotels may differ.3Hyatt Hotels and Resorts. Reservation Frequently Asked Questions
- IHG (Holiday Inn, Crowne Plaza, and related brands) generally requires guests to be at least 18.
- Wyndham has no chain-wide standard. Each hotel sets its own minimum age, and the chain directs guests to contact the property.4Wyndham Hotels. Frequently Asked Questions
Even within a single brand, the answer can shift by location. A Marriott in a college town may welcome 18-year-olds while a Marriott beach resort in the same state requires 21.
Destinations Where 21 Is the Standard
Some cities have an outsized concentration of hotels that require guests to be 21. Las Vegas is the clearest example. Casino-hotel properties there routinely enforce a 21-and-older policy for both reservations and check-in.5Caesars Rewards. Las Vegas Hotels – Age Requirements Miami Beach, Gulf Shores in Alabama, and parts of New York City also see more 21-plus policies than average, driven by the same mix of nightlife, alcohol access, and resort amenities.
If you’re 18 to 20 and headed to one of these places, plan to research specific properties rather than trusting that any available room will accept you.
Online Booking Doesn’t Verify Your Age
Most hotel websites and third-party platforms like Expedia and Booking.com don’t check your age when you make a reservation. All they typically need is a valid payment card. That means an underage guest can complete a booking, get the confirmation email, and show up at the front desk expecting a room, only to be turned away when the receptionist checks their ID.
This is where young travelers get burned. The reservation goes through, but the hotel isn’t obligated to honor it if you don’t meet the check-in age, and a refund on a prepaid rate is unlikely once you’ve violated the terms. Confirm the age requirement before you pay.
What You Need at Check-In
Every hotel will ask for a valid government-issued photo ID at check-in. A driver’s license, state ID, or passport all work. The name on the ID needs to match the reservation. If someone else booked the room for you, some hotels require a third-party authorization form completed in advance by the person who paid.
Hotels also place a hold on your credit or debit card to cover incidentals like room service, the minibar, or damage. Holds typically run from $25 to $200 per night, with upscale and resort properties at the higher end. The hold is not a charge, and it’s released after checkout, though the timing of that release matters.
Debit Cards Lock Up Real Cash
On a credit card, an incidental hold reduces your available credit temporarily. On a debit card, it locks up money in your checking account. A $100-per-night hold on a three-night stay puts $300 of your money out of reach for days after you leave. Marriott says incidental holds are typically released within five business days of checkout, but the release can take up to 30 days depending on your bank.6Marriott Help Center. What Is An Incidental Hold?
For an 18-year-old without a credit card, that can create a cash flow problem. Some hotels won’t accept debit cards for the incidental hold at all. If a debit card is your only option, call the hotel first to confirm they accept it and ask how large the hold will be.
If You’re Under the Minimum
A Parent or Guardian Books the Room
The most common workaround is having a parent or legal guardian book and pay. Many hotels will let a minor stay as long as an adult is financially responsible for the reservation. Some properties require a written authorization form in which the parent accepts liability for charges and damage. Others require the parent to check in in person and add the minor as an additional guest. Call the front desk before arrival to find out which applies.
Emancipated Minors
A minor who has been legally emancipated through a court process has the same right to enter contracts as an adult, hotel agreements included. In practice, that means carrying court documentation and presenting it at check-in. Front desk staff aren’t trained to recognize emancipation paperwork, so expect the process to involve a manager.
Active-Duty Military
Some hotels make exceptions for active-duty military members who are under 21, and Florida has enacted a law requiring hotels to accommodate service members regardless of age. It’s not a universal policy. If you’re active-duty and under 21, ask about military exceptions when you call and bring your military ID to check-in.
How to Find a Room If You’re 18 to 20
The search process is different in this age bracket. Sorting by price and booking the cheapest option isn’t reliable. What actually works:
- Call the front desk rather than the 1-800 line. The central reservation line may quote a corporate policy that doesn’t reflect what the specific property enforces.
- Look at budget and economy chains first. Roadside motels, economy brands, and independent hotels tend to be more flexible than upscale resorts, and they rarely set the bar above 18.
- Target hotels near airports, business districts, and colleges. Properties near universities are used to guests in their late teens.
- Consider hostels. They’re built for younger travelers and check-in is straightforward with a valid ID. Many offer private rooms if a shared dormitory isn’t for you.
- Screenshot the policy. If the hotel’s website lists 18, save a copy on your phone. Front desk staff occasionally quote a stricter rule than what’s posted, and proof resolves it quickly.
What Happens If You’re Turned Away
If you show up and don’t meet the age requirement, the hotel can refuse to check you in. A valid reservation doesn’t override the age policy. What happens next depends on how you booked.
If you booked a refundable rate directly with the hotel and haven’t checked in, you can usually cancel without penalty. If you prepaid through a third-party site at a non-refundable rate, you’re likely out that money. The terms were available before you booked, and most hotels take the position that failing to meet them forfeits your payment. Some travelers have had luck calling the booking platform’s customer service to negotiate a credit or partial refund, but there’s no guarantee.
Misrepresenting your age, on the phone or through a booking site, makes the situation worse. Beyond losing the reservation and any prepayment, you’ve given the hotel a clean reason to refuse any goodwill adjustment. A phone call before booking is the safer approach.