How long is my ESTA valid for?
ESTAs are valid for two years or until your passport expires, whichever comes first.
Can I enter the United States multiple times?
Yes, there is no limit on number of entries using an ESTA.
What if my ESTA expires while I'm in the United States?
An ESTA is only required in order to travel to the US. They are not required to leave.
Does an ESTA guarantee my entry in to the United States?
No. An ESTA is required in order to board a flight to the US. Once you land, you will have to proceed through customs as usual.
Can I renew my ESTA?
No, you will need to apply for a new one.
What do I need to bring to the airport?
Your ESTA is electronically linked to your passport. You should have your reference number handy, but officials verify your ESTA status using your passport.
If I have a visa will I also need an ESTA?
Individuals who possess a valid visa will still be able to travel to the United States on that visa for the purpose for which it was issued. Individuals traveling on valid visas are not required to apply for an ESTA authorization.