Delta Air Lines will end service to four regional markets from New York's LaGuardia, but will continue service from JFK.
Service from LaGuardia to Norfolk and Richmond, Virginia, Lewisburg, West Virginia and Halifax, Nova Scotia will cease later this year. Norfolk and Richmond already have nonstop service to JFK, and Delta plans to launch nonstop flights from JFK to Lewisburg and Halifax as part of the adjustments.
A Delta spokesman says the carrier "has tweaked its fall schedule to make the best use of our resources at LaGuardia and JFK in order to provide the maximum benefit for our customers".
The move comes after US Airways announced this week it would bolster its regional flights out of LaGuardia using slots that are currently leased, though the carrier did not identify which carriers were using the slots.
Changes by both Delta and US Airways at LaGuardia follow the US government's rejection of a slot swap agreement between the two carriers at LaGuardia and Washington National airports. If the deal had crystallised, Delta would have created a hub at LaGuardia.
Meanwhile, Delta will also be ending service from Atlanta to Manaus, Brazil next year, citing poor performance on the route. Delta currently flies between the two cities three times per week with Boeing 737-700s, according to the Innovata database.