If you are looking for a simple cost effective way to get from Manhattan to JFK airport, I'd suggest taking the subway or Long Island Rail Road (LIRR) to the JFK Airtrain. Since a taxi will generally cost you $55 ($45 fare, $5 tolls, $5 tip) and a variable amount of time, depending upon traffic, the train or subway can be much cheaper and get you there in almost the same time.

The recommended mode of transportation depends upon your location in Manhattan and the ...

Although I can't beat Matthew's $105 fare on UA, this one way fare on American comes close. Purchased only a few days in advance with the upgrade clearing immediately, is always nice for me, but seems counter productive to AA's bottom line. Now if only Business class passengers weren't second class citizens. Where is my pre-departure drink!!! ;)