The electronic ETA travel permit is a requirement for boarding flights or, for example, Eurostar trains when travelling to the UK, from 25 February 2026. BTN Europe: ”Another change, coming into force from 25 February, will prevent eligible visitors without an ETA from boarding their transport to the UK”.
Passengers transiting through UK airports who go through UK border control will need an ETA, unless they are transiting via Heathrow or Manchester airports and do not go through UK border control. If the transit also requires changing airports, an ETA will be needed.
The price of the ETA travel permit is GBP 16 and it is planned to be raised to GBP 20 during the current year.
The BTN Europe article can be read. here.