Watervliet is served by the Albany County Airport, 10 miles due west. The airport is served by Delta, Continental, United and Southwest Airlines.
Amtrak stops at the Albany-Rensselaer station, 9 miles due south.
Interstate 787 runs along the eastern edge of the city with exits near the southern and northern entrances to the city. It links the city to the New York State Thruway at exit 23 and southern Vermont. NY State Route 2 runs from west to east, linking the city to Interstate 87 in the west and north western Massachusetts. NY State Route 32 runs from the north to the south, serving local traffic between the Adirondacks to Albany, and beyond.