ESTA (Electronic System for Travel Authorization) is the pre-travel approval required for citizens of the 41 Visa Waiver Program (VWP) countries before flying to the United States 사실.
Cost and validity
The government fee is US$40.27. Once approved, it is valid for two years and multiple entries, with stays of up to 90 days 사실.
Approval is not the same as entry
An approved ESTA lets you board the plane — but the final decision is made by a CBP officer at the US port of entry 사실. Accuracy on your application matters.
Avoiding refusals
Most refusals come from typos in your passport details, mismatched passports, or undeclared travel history 사실. A professional review before submission helps prevent costly mistakes — final approval, however, always rests with US authorities.