Electronic System for Travel Authorization (ESTA) is an automated system that determines the eligibility of visitors to travel to the United States under the Visa Waiver Program

(VWP). Authorization ofallows travel to the United States for 90 days and is valid for 2 years. U.S. Customs and Border Protection officers will inspect your documentation on arrival into the United States to determine entry based on standard relevant requirements. Thecollects biographic information and answers to VWP eligibility questions.may be submitted at any time prior to travel, though it is recommended that travelers apply as soon as they begin preparing travel plans or prior to purchasing airline tickets.