Bonsoir,
sur expedia, il faut cliquer ici pour aller plus loin:
Terms & conditions *
I understand and have accepted the
terms and conditions of booking a tour operator holiday
on Expedia.co.uk on behalf of all travellers.
on obtient alors ceci (entre autres):
IMPORTANT INFORMATION REGARDING ENTRY TO USA.The Department of Homeland Security has introduced a new policy which is now enforced and applies to travel involving entering/stopping in the United
States (flights, cruises, etc). All foreign nationals from any of the
Visa Waiver Program (VWP)* nations must obtain an electronic travel authorisation before arriving in the United
States through the ESTA system (Electronic System for Travel Authorization). Visit
esta.cbp.dhs.gov
to view participating counties and fill out the form. You will then receive one of the following results:
Authorised, Not Authorised: in this case you must obtain authorisation through an Embassy or Consulate before departing for the United
States,
Pending authorisation: you must check the ESTA website over the following 72 hours. Once the trip is authorised, you will receive an
authorisation ID number that will be required at airport check-in or upon arrival at a port. You are responsible for submitting the ESTA application and obtaining approval to travel to the United
States.
VWP CLIENTS WHO DON’T OBTAIN ESTA APPROVAL WILL LOSE ALL RIGHT TO OBTAIN A REFUND FOR THE HOLIDAY THEY HAVE BOOKED. (please see
www.cbp.gov/travel
for more information).
Bon, c'est vrai, faut se cogner la masse de lecture avant de tomber dessus...

et sur le site de l'
Esta
, on trouve ceci:
Les personnes susceptibles de se rendre aux Etats-Unis peuvent-elles faire une demande d'autorisation de voyage ESTA, sans projet précis, dans l'éventualité d'un voyage de courte durée ?Les personnes qui souhaitent se rendre aux
Etats-Unis [..]
Le système traitera toutefois les demandes de dernière minute, les cas d’urgence et celles des passagers se trouvant à l’aéroport sans autorisation.