New York
New York has three different airports, most international flights end in JFK, some in Newark in New Jersey. La Guardia is advantageous since it is close to Manhattan, but only connected to American airports. Arriving at Newark, the train is the best option to get to the city. Even more difficult and stressful is the departure from dispatched JFK, you can take a shuttle to the Jamaica station and a Subway thereafter. If you like to forego the stress you can also take a cab to Manhattan, you will however probably end up paying 55 Dollars or more, also accounting for toll and tip.