Your ESTA for the United States of America: Visas fees
NB : The lead times given here are the ones from Consulates and/or Embassies.
eVisa
VTI’s advice for your trip to the USA
WARNING to all ESTA holders!
If you have an ESTA but have subsequently traveled to a country on the US blacklist, such as Yemen, Syria, Iran or Iraq (non-exhaustive list and may varied at all times), then your ESTA is invalidated and you will not be able to use it to enter American soil.
A visa application will then have to be made to the United States Embassy.