You do not need to reapply for ESTA if your flight or travel itinerary changes after your ESTA has been approved.
An approved ESTA is valid for two years from the date of issuance (or until the passport expires, whichever comes first). During this validity period, you may enter the United States multiple times.
The specific flight details or U.S. address provided in your original application are updated through Advance Passenger Information submitted by the airline during the immigration process. Therefore, there is no need to update or modify your ESTA due to changes in flight schedules or travel plans.
However, you must apply for a new ESTA through ETAPORTAL if any of the following important information changes:
- You are issued a new passport
- Your name (first name or surname) changes
- Your country of citizenship changes
- There is a change in eligibility, such as a criminal conviction or a communicable disease, that would require you to answer “Yes” to any of the eligibility questions on the ESTA application
Minor changes to travel plans, such as flight schedules or accommodation details, do not require a new ESTA application, and your existing ESTA remains valid.