JetBlue will delay the start of its service from its Boston hub to London, the airline said on Tuesday.The carrier said that it now plans to begin service from Boston to London Gatwick Airport (LGW) on Aug. 4 — pushed from the originally planned date of July 19 — with service to London’s Heathrow Airport now planned to start on Sept. 20, pushed from Aug. 22.Want more airline-specific news? Sign up for TPG’s free new biweekly Aviation newsletter.In an emailed statement, the New York-based carrier pointed to delivery delays of new aircraft from Airbus as the cause.The airline began flying to London from John F. Kennedy International Airport (JFK) in New York in 2021, using a new fleet of Airbus A321LR aircraft. JetBlue currently has three of the A321LR jets in its fleet, according to its website, with another 10 on order.In a press release, JetBlue said it expected to take delivery of two additional A321LRs this summer, which it planned to use to enable to Boston flights, but added that it was recently notified by Airbus of a production delay.Sign up for our daily newsletterEmail addressSign upI would like to subscribe to The Points Guy newsletters and special email promotions. The Points Guy will not share or sell your email. See privacy policy.Affected passengers will be rebooked onto flights to London connecting through JFK, the airline said.The airline first announced its long-rumored transatlantic plans in April, 2019, at the time stating that it planned to launch service from New York-JFK and Boston in 2021. In May of last year, the airline said that it would fly from New York-JFK with daily service to both London Heathrow and London Gatwick. Flights from JFK to London Heathrow began in August and flights to Gatwick in September, though the airline reduced frequencies for the first few months as various pandemic-related border restrictions remained in place.