Moderator: Hilton Honors, Practical Travel Safety Issues, Information Desk & San Francisco
Join Date: Jan 2001
Location: San Francisco CA
Programs: UA, Hilton, Priceline, AirBnB
Posts: 11,313
as someone who has done this many times
From the intl terminal it's about as fast to walk as it is to take the airtrain, unless you have a ton of luggage. If you have checked luggage you will have to recheck it and 80 min is NOT a lot of time.