Airport pickup service is available either through the booths of the various car rental companies, or through complimentary hotel services.
Otherwise, taxis are always available. The exact fare from the airport to the downtown area is set at $38.
There is also a commuter train station near the airport, ideal if you arrive during rush hour. Do check the schedule for the departure time, as it sometimes may be faster to hit the road instead.
A shuttle bus (Aerobus) runs between the airport and the downtown district, costing $15 per ticket, with discounts for children and elders. Conveniently, it stops at several hotels along the way.