New York City has many major modes of travel: airports, freight movements, passengers, air, rail, buses and commuter rail. TheMetropolitan area's three major airports (John F. Kennedy, Newark Liberty and Laguardia) make up the largest airport system in the United States andfirst in the world in terms of total flight operations. Furthermore, the public transportation system is the busiest and largest in North America.This section includes tables on destinations and origins, travel related employment and bridges/tunnels.