Travel price transparency rules in the EU, UK and US

The rules at a glance

EU: final prices for flights, prior prices and personalisation

Article 23(1) of Regulation 1008/2008 applies to air fares and rates offered to the general public for services from an EU airport, in any form including online. The final price must be shown at all times and must include the fare plus all unavoidable and foreseeable taxes, charges, surcharges and fees. Taxes, airport charges and other charges added to the fare — security or fuel, for example — must be specified. Optional price supplements must be communicated clearly at the start of any booking process, and accepted by the customer on an opt-in basis.

Directive 2019/2161, the so-called Omnibus Directive, added two transparency duties that Member States apply from 28 May 2022. First, any announcement of a price reduction must state the prior price, defined as the lowest price the trader applied in a period of not less than 30 days before the reduction. That rule sits in the Price Indication Directive, which concerns products sold to consumers; how far it reaches into a given travel offer is a question of national transposition. Second, the Consumer Rights Directive now requires a trader to inform the consumer where the price was personalised on the basis of automated decision-making. Passenger transport services are largely outside that Directive's information rules, so the personalisation duty matters most for accommodation and other travel services sold online.

UK: total prices and drip pricing under the DMCC Act

Section 230 of the Digital Markets, Competition and Consumers Act 2024 lists the material information an invitation to purchase must contain. It includes the total price of the product, and section 230(4) defines that total to include any fees, taxes, charges or other payments the consumer will necessarily incur. Where the total cannot reasonably be calculated in advance because of the nature of the product, the trader must explain how it will be calculated, in a way that lets the consumer work it out. Optional delivery charges that are not in the total must be disclosed.

The section came into force on 6 April 2025. In practice it targets drip pricing: a headline price that grows through mandatory fees revealed later in the booking flow.

US: hotel fees and the FTC rule

The FTC's Rule on Unfair or Deceptive Fees, at 16 CFR Part 464, took effect on 12 May 2025 and covers two categories: live-event tickets and short-term lodging, which includes hotels, motels, inns and vacation rentals. Any business that offers or advertises them is covered, including third-party platforms and travel agents.

Where an offer shows a price, it must show the total price — including all mandatory fees the business can reasonably calculate — more prominently than other pricing information. Government-imposed taxes and charges may be left out of that total, but they, and any other excluded charges, must be disclosed before the consumer is asked to pay. A mandatory resort or amenity fee therefore belongs in the headline total; a government occupancy tax need not be in it. The hotel resort fees page looks at how to track this in practice.

US: airline fares and ancillary fee disclosure

Under 14 CFR 399.84, an advertised air fare must state the entire price to be paid by the customer to the carrier or agent; taxes and fees may be listed separately, but less prominently than the total.

Ancillary fees took a longer route. DOT's 2024 rule would have required fees for checked and carry-on bags and for changes and cancellations to be shown at the first point in a search where a fare appears. A Fifth Circuit panel stayed it in July 2024, and on 3 February 2026 the court, sitting en banc, vacated it for failing to give the public an opportunity to comment on a study DOT relied on. DOT's final rule published on 2 July 2026 restored the 2011 requirements: airlines show any baggage fee increase or allowance change on their homepage for at least three months, airlines and ticket agents show a notice on the first fare screen that bag fees may apply, e-ticket confirmations list bag allowances and fees, and airlines publish all ancillary fees in one place on their website.

For collecting these fees systematically, see airline ancillary prices.

What this means when you collect travel prices

• Record the price basis. Store whether a figure is a total, a base fare plus taxes, or a per-night rate, and keep each fee line separately.
• Compare the headline with the last price shown before payment. Collect only steps a logged-out visitor can reach without entering payment details, and never complete a booking.
• Expect market differences. An EU consumer price includes VAT; a US lodging total may exclude taxes; a UK total must include fees. A cross-market dataset needs a column for which rule shaped each number — see comparing prices across markets.
• Keep 30 days of history if you want to check announced discounts against the prior price; a design for that is in storing price time series.