All eligible nationals or citizens of VWP countries who plan to travel to the United States for temporary business or pleasure under VWP are required to receive an authorization through ESTA prior to boarding a U.S.-bound airplane or vessel. The term "United States" refers to the continental United States, Alaska, Hawaii, Puerto Rico, Guam, the Virgin Islands of the United States, and the Commonwealth of the Northern Mariana Islands.
Accompanied and unaccompanied children, regardless of age, are also required to obtain an independent ESTA approval. A third party, such as a relative or travel agent, is permitted to submit an ESTA application on behalf of a VWP traveler.
Yes. Eligible nationals or citizens of countries that participate in the VWP require either an ESTA or a visa to transit the United States. If a traveler is only planning to transit through the United States en route to another country, when he or she completes the ESTA application, the traveler should enter the words "In Transit" and his or her final destination in the address lines under the heading “Address While In The United States.”