Glossary · Travel distribution
Dynamic pricing
Dynamic pricing is setting prices that change over time in response to demand, remaining capacity, competitors' prices or time before the date of use, rather than holding one fixed price; airlines, hotels, car hire and event ticketing use it to sell the same product at different prices from one day or hour to the next.
Reviewed 30 Oct 2026
How dynamic pricing works in travel
Travel inventory is fixed and perishable: an empty seat or room cannot be sold after the date. Airlines manage it through booking classes that open and close as demand forecasts change; hotels move their public rate with forecast occupancy, events and competitors' rates.
The result is a price that depends on when you look. A fare for the same flight can move several times between first sale and departure, which is why the fare alerts use case exists at all.
Dynamic vs personalised pricing
| Dynamic pricing | Personalised pricing | |
|---|---|---|
| Price varies with | Time, demand, capacity | Who the buyer is, inferred from data about them |
| Two buyers at the same moment | Generally see the same price | Can see different prices |
| EU disclosure duty | None specific when no personalisation is involved | Consumer must be told the price was personalised by automated decision-making |
The disclosure duty comes from Directive (EU) 2019/2161, which added point (ea) to Article 6(1) of the Consumer Rights Directive. Its recital 45 says the requirement does not apply to dynamic or real-time pricing that changes prices quickly in response to market demand without personalisation based on automated decision-making. This is a description of the text, not legal advice.
Measuring dynamic prices
- Observe the same item at a fixed cadence, with route, dates, occupancy and point of sale held constant.
- Collect logged-out with fresh cookies, so changes over time are not confused with personalisation.
- Record the time of every observation; a price without a timestamp is not a data point.
The evidence on repeated searches is reviewed in do airlines raise prices when you search; for retail, see price monitoring.
FAQ
Questions
Something not covered? Write to contact@arcproxies.io.
Is dynamic pricing legal in the EU?
Changing prices over time is generally permitted, subject to the usual consumer law on clear, final prices. Where a price is personalised on the basis of automated decision-making, Directive 2019/2161 requires telling the consumer; its recital 45 says that duty does not cover dynamic pricing without personalisation. Check specific cases with counsel.
What is the difference between dynamic and personalised pricing?
Dynamic pricing changes the price for everyone as time, demand and capacity change. Personalised pricing sets a price for an individual based on data about that person, so two buyers at the same moment can see different prices.
Do flight prices go up if I search the same route repeatedly?
Prices move with demand and seat availability whether you search or not, so a rise after repeat searches is not proof of tracking. Testing it properly needs controlled, simultaneous logged-out searches; the guide on whether airlines raise prices when you search goes through the method.
How often do dynamic prices change?
It varies by seller and by how close the date of travel is. Measure it for the routes or properties you care about by sampling at a fixed cadence and comparing consecutive observations.
Sources & review
Last reviewed by the ARC Proxies team. Prices are read from the live catalog at build time.
In practice