ntr399-C_2021526EN.01000101-E0399

COMMISSION NOTICE – Guidance on the interpretation and application of Directive 2005/29/EC of the European Parliament and of the Council concerning unfair business-to-consumer commercial practices in the internal market · European Union

(399) For air transport, Art. 23.1 of the Air Services Regulation requires that optional price supplements are communicated in a clear, transparent and unambiguous way at the start of any booking process and that their acceptance by the customer is on an ‘opt-in’ basis.

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Source: EUR-Lex (Cellar) · retrieved 2026-09-25 · Text as adopted (Official Journal); later amendments are not incorporated in this text.