This cant be all of the flights from ORD to JFK can it?
I mean is there really no mainline service between JFK and ORD???
http://flightaware.com/live/findflight_route.rvt?origin=ord&destination=jfk
as opposed to ORD to LGA
http://flightaware.com/live/findflight_route.rvt?origin=KORD&destination=lga
and EWR
http://flightaware.com/live/findflight_route.rvt?origin=KORD&destination=ewr