The Boeing 767-300ER was the widebody workhorse of transatlantic aviation for a generation. Entering service with American Airlines in 1988, the 767 was the first twin-engine widebody to be certified for extended range operations, and its introduction of ETOPS flying reshaped the economics of long-haul travel. The aircraft seats 218 to 269 passengers in typical configurations and has a range of almost 6,000 nautical miles. Almost every major American carrier operated 767-300ERs at some point: United, American, Delta, and others. Passenger production of the 767 ended in 2014, but the 767-300ER remains in service with Delta and United, and the freighter variant is still in production for FedEx, UPS, and cargo customers. When you are on a transatlantic flight in an older widebody with a 2-3-2 economy layout, there is a good chance you are on a 767-300ER.