For about 4bucks a person (2bucks for the bus and 2bucks for the subway) take the M60 bus from LGA to Cathederal Pkwy (110th st) and transfer to the Subway 1 train (red) south to 42nd street and there you are...Metro cards can be purchased at the Hudson Newsstands or quarters can be used on the bus but the bus does not accept dollar bills...