Delta Air Lines will add new flights between Salt Lake City and London-Heathrow beginning May 14, and between New York’s John F. Kennedy International Airport and Stockholm starting July 1 as part of its expanded summer schedule, the company announced Tuesday. 

Delta added that for the June 1-Aug. 31 period it is offering for 2022 about 143 percent more seats in its three premium cabins—Delta One or Delta One Suites, Delta Premium Select and Delta Comfort-Plus—than in 2021, for a total of about 750,000 premium seats.