As security at International airports tightens, we remind our readers about ESTA. On the one-year anniversary of implementing the Electronic System for Travel Authorization, the Department of Homeland Security’s U.S. Customs and Border Protection reminds U.S.-bound travelers from Visa Waiver Program countries of the ESTA requirement. Beginning January 20, CBP will initiate a 60-day transition to enforced ESTA compliance for air carriers; VWP travelers without an
approved ESTA may not be allowed to board a U.S.-bound plane.
ESTA is an electronic travel authorization that all citizens of VWP countries must obtain prior to boarding a carrier to travel by air or sea to the United States under the VWP. ESTA has been mandatory since Jan. 12, 2009 for all nationals of VWP countries traveling to the U.S under the VWP.
More from the CBP here