Verified answer

Yes, you can!

You need to apply for an Electronic System Travel Authorization (ESTA) if you want to arrive in the U.S. on a flight from the UK.

https://esta.cbp.dhs.gov/esta/esta.html ..

An ESTA is not required if you fly in to Canada and plan to cross the Canadian - US land border. In this case you need to fill an Entry/Departure Record Form I-94W and pay the entry fee of US$6.00 in cash.

https://help.cbp.gov/app/answers/detail/a_id/1094 ..

Yes you can.

Immigration is present at both Ground and air departure points and will stamp your passport and update your records accordingly.

Have a great trip.

Best

Fred Wahl

Matchmaker

yes