Delta Air Lines will cancel an order with Boeing for eighteen 787 Dreamliners stemming from its 2008 merger with Northwest Airlines. The carrier in 2010 had deferred deliveries to 2020 and beyond.

Atlanta-based Delta announced on December 27 that it had reached agreement with Boeing to cancel the 787 order, which is valued at $4 billion at list price. The carrier affirmed that it will continue to take delivery of new 737-900ER narrowbody airliners through 2019, based on two orders for 120 jets.

“Delta is one of the world’s largest operators of Boeing aircraft and our valued partnership with Boeing will remain strong as we safely and comfortably serve our customers across the world every day,” stated Greg May, Delta senior vice president for supply chain management and fleet. “This business decision is consistent with Delta’s fleet strategy to prudently address our widebody aircraft needs.”

As of November, Boeing reported 1,210 total 787 orders, with 489 aircraft delivered and 721 unfilled orders.