Generally folks in the East, particularly in the North East do not look to Hawaii as a destination, hence the more limited service available.
gets away with its EWR
service primarily due the strength of its Newark hub. Delta is quite a bit weaker in comparison at JFK
, primarily operating an afternoon/evening hub geared for European flying.
Besides any equipment issues, DL
is much better off serving Hawaii as it continues to do via its other hubs and gateways which are able to channel traffic demand better then what the carrier could achieve at JFK
As a comparison I would expect UA
to be able to manage and IAD
-Hawaii service which would be marginal itself before DL
does one from JFK
. In addition AA
which has quite a bit of Hawaii flying also has not done a JFK
nonstop either for many of the same market reasons as DL