A hotel room quoted at one price in the morning can cost something different by evening. Revenue management systems reprice inventory continuously against forecast demand.
The inventory expires
A room unsold on a given night generates nothing, and the opportunity cannot be recovered afterwards because the night has passed.
That makes hotel inventory perishable in the same way an airline seat is, and perishable inventory is always priced dynamically.
The marginal cost of occupying an empty room is small, so almost any revenue is preferable to none once the date is close.
What the system is forecasting
Revenue systems predict how many rooms will sell at each price between now and the arrival date, using historical patterns for that day of the week and season.
Local events, competitor pricing, current booking pace and the mix of business and leisure demand all feed into that forecast.
When bookings run ahead of the forecast the system raises prices, and when they run behind it lowers them, which produces movement within a single day.
Why prices sometimes rise close to arrival
Late demand is often business travel, which is less price-sensitive and books at short notice, so the last rooms can be the most expensive.
A hotel expecting to fill has no reason to discount, since selling a room cheaply now removes it from a customer who would pay more later.
Prices fall late only when the forecast shows the property will not fill, which is why last-minute bargains are unpredictable rather than reliable.
The role of rate types
The same room is sold under several rate types with different conditions, and the cheapest are usually prepaid and non-refundable.
That difference is not arbitrary. A prepaid booking transfers the risk of a change of plan to the guest, and the discount is the price of taking it on.
Flexible rates cost more because the hotel may be left holding an empty room at short notice, which is exactly the outcome the system exists to avoid.
Where distribution channels fit
Booking platforms charge the hotel a commission, so a direct booking at the same price is worth more to the property.
Many hotels respond by offering members better rates or added benefits directly, which is cheaper for them than paying commission.
Rate parity agreements limit how far published prices can differ between channels, which is why the differences often appear as inclusions rather than as price.