Both the UK and Estonia perticipate in the visa waiver program, so no visas needed. It will be just the ESTA and a few formes when you transfer through.
You will be clearing immigration and customs (and all us import rules will apply) in either LAX or SFO given that is your first touch down in the US.Edited: 4:20 pm, December 19, 2012
As GeoMedic said - you'll need an ESTA even if you're just in transit.
Make sure you get it through the official site, it costs $14 and is valid for 2 yrs or until your passport expires, whichever is earlier.
To get ESTA clearance go to US Goverment website https://esta.cbp.dhs.gov . The cost to get the authorization is $14. (Some websites charge way more essentially for passing your info to CBP.)
Have a print out with you when you check-in, since some airlines demand to see one.
Keep a copy for two years - you can reuse the same authorization at no charge, so long as you update your flight info.
Curiously, ESTA application asks for airline name and flight number, but not the date of travel.
>>you can reuse the same authorization at no charge, so long as you update your flight info.<<
I don't think even that is necessary. I have never updated my flight information, but have had no difficulties in entering the USA.
We are staying at Los Angeles airport (waiting for another flight) for ten hours,is this visa still suitable for us? Cheers Lilly
Australian passport holders usually only need an ESTA.
apply on line:
>> We are staying at Los Angeles airport (waiting for another flight) for ten hours,is this visa still suitable for us? Cheers Lilly<<
You haven't mentioned which nationality (passports) you're traveling on, so we can't comment on "visa".
BUT, in order to transit via the USA, you need entry clearance to the US as if you were visiting the US. That means either a visa or ESTA.
IF your passports are from a country included in the Visa Waiver Program (which includes Australian passport holders) then you need the ESTA.
If that's what you're referring to then YES the ESTA will enable you to stay in Los Angeles for 10 hours for your onward flight. It will allow you to stay longer (up to 90 days) should you wish, and the ESTA is valid for two years.
You do not need to update your flight/address where you are staying information on ESTAs. We have entered the USA many times on ESTAs and never updated that information. Even when you first apply for the ESTA you only have to give personal/passport details as the other info is not mandatory.
Sorry,we have an Australian and a UK passport