The best approach here is to apply for ESTA, which you will need to transit the US on the visa waiver program. ESTA is valid for two years, so you can apply now to see whether it is granted.
Pay close attention to answering all of the questions truthfully. If they ask you whether you were ever deported from the US, you should answer "no," but if they ask you whether you were ever deported from any country, you should of course answer "yes."
If the ESTA is denied, you should apply for a visa. During the visa application, you will be able to explain that the deportation occurred when you were a minor. It should not be held against you.
If the ESTA is granted, you can travel without a visa.
Credit:stackoverflow.com‘