if you're looking for public transportation options, this is probably the best bet. getting from NYC airports to penn station (where the Vermonter leaves from) depends on whether you fly into JFK/LGA or EWR (Newark, NJ). for JFK/LGA it's easiest to just take a cab to penn station (it's a flat rate of around 50 dollars i think, but be careful because some cabs are known to try and sucker people). if you fly into EWR you can just take the train from the airport right to penn station (NJ Transit) for much less. just be sure to build in extra time since google maps is notoriously optimistic with NYC transportation (imo)