ClipperDelta

Actually the increased JFK-LHR frequency will be with DL metal as VS cuts one daily here. DL will operate its third daily JFK-LHR with a daylight eastbound JFK-LHR and the first-flight-of-the-day return from LHR.

So for DL metal, it's

+BOS-MAN 75S (new daily seasonal)
+BOS-LGW 75S (new daily; not clear whether it's year-round or seasonal)
+JFK-LHR 764 (new frequency so 3x daily)

For VS metal, it's

+JFK-LGW A332 (new daily, not clear whether seasonal or year-round)
-JFK-LHR (less one daily flight)
+LAX-LHR (increase of 3x weekly to 17x weekly)
+SEA-LHR (increase of 4x weekly to 11x weekly)