Free hotel price tracker
Think CamelCamelCamel, but for hotels. Paste a hotel booking page, and Underbook watches that room's rate for your dates — then emails you the moment it drops. It also checks other booking sites for the same room, so a drop can mean "rebook and save" or "it's already cheaper elsewhere." Free, no account.
Free · no account needed · we never see your payment info.
Three steps. The only thing we need from you is an email to send the alert to.
Copy the booking link for the hotel, dates, and room you care about. Underbook reads the rate and starts watching it.
Underbook re-checks the price on a schedule — and checks other booking sites for the same room and dates, not just the one you started from.
When the rate falls, you get an email with the new price and where it is. If your booking is refundable, that's your cue to rebook lower and cancel the old one.
Hotel rates aren't fixed. A hotel repricing a room as its calendar fills or empties is normal, and it happens right up to check-in. The catch is timing: a price drop only helps if you find out while you can still act on it — before a fully-refundable rate's cancellation deadline passes. That's the whole point of a drop alert. You booked; you moved on; Underbook keeps watching.
And a "drop" isn't only the same site getting cheaper. The identical room, same dates, is regularly listed for less on a booking site you didn't check — different wholesale channel, less ad spend. Underbook watches for both, and when it can't confirm two rooms are truly identical, it tells you plainly instead of pretending a lookalike is a match.
What the tracker does
What it never does
Yes. Paste the booking page into Underbook and it watches that room for your dates, then emails you when the rate drops. It's a hotel price tracker — similar to CamelCamelCamel for Amazon, but for hotel rooms. No account or app needed to watch a price.
Often. Hotels reprice constantly based on occupancy, and many rooms are booked on fully-refundable rates. If the price falls before your cancellation deadline, you can rebook lower and cancel the old reservation. The alert is what gets you there in time.
Yes — watching a hotel price and getting drop alerts is free, no account required beyond an email to send the alert to. If you later book through a site Underbook surfaces, it may earn a small commission from that site; you pay nothing extra, and it always shows the lower rate.
Underbook checks on a schedule so you don't have to remember, and it doesn't only track the site you booked on — it looks at other booking sites for the same room and dates, so a drop can also mean the identical room turned up cheaper elsewhere. More on comparing the same room → If you're weighing the options, here's an honest look at the best hotel price tracker for your situation.
The price check runs on Underbook's side from the link you paste. It never sees or stores your payment details, booking happens on the site you choose, and it doesn't sell your data or email. Read the privacy policy →
Free hotel price drop alerts for the room you already booked. We never see your payment, and you always book where you choose.
Watch a hotel price — free