Originally Posted by
TRAVELSIG
OK... I often get very low I fares to JFK with DL- much lower than the similar C/D/Z fare on LH via FRA to either JFK or EWR... hence my comment on less demanded- of course if you have access to actual inventory, perhaps there is a different story which I do not know- just attempting to help the OP based on my monthly travel experience...
I base this on past usage, several professional colleagues who fly DL to VCE every summer, and EF inventory #s.