The estimated average time to complete this application is 20 minutes.
A travel authorizations is valid for two years from the date of authorization, or until your passport expires, whichever comes first.
If you obtain a new passport or change your name, gender or country of citizenship, you will be required to apply for a new travel authorization.
If your ESTA has expired, you must reapply by submitting a new application.
If your ESTA expires while in the U.S. it will not affect your departure.