Hello -
I am wondering what the requirements are for layovers at Heathrow and ETA. We are traveling from Nice, France to Boston. We have a layover in Heathrow. Do I need to fill out a form for all of us traveling?
Thanks!
You do not need an ETA if you are transiting the UK and are not crossing the UK border
https://www.gov.uk/guidance/apply-for-an-electronic-travel-authorisation-eta
are the two flights linked and on one ticket? Do you have checked luggage?
Depending on those answers
How long is the layover? If it is just a few hours, you can transit without clearing Border Control and needing an ETA. But if you intend to enter Britain, you must get the ETA (either via the website or mobile app).