US-Europe flights adjust fleet away from aging Boeing 767s

One example is United Airlines' route from Washington Dulles (IAD) to Barcelona El Prat (BCN), which will temporarily use a Boeing 787-8 instead of a Boeing 767-300. Similarly, flights from Newark (EWR) to Munich (MUC) will transition from a Boeing 767-400 to a Boeing 777 during this period.

Delta Air Lines will also replace its Hartsfield-Jackson Atlanta (ATL) to Dublin (DUB) and Milan Malpensa (MXP) services with an Airbus A330-300 instead of a Boeing 767-400. In Seattle-Tacoma (SEA) to Keflavík (KEF), Icelandair's route typically served by a Boeing 767-300 will now be operated by an Airbus A321LR thrice daily.

Switching to higher-capacity jets addresses both business and leisure travel demands in June. Despite these changes, Cirium data indicates that "the most common aircraft type operating between the two regions in terms of flights is actually the Airbus A330-300." However, combining all variants of the aircraft family shows that "Boeing is the dominant force in the sector."

Delta Air Lines operates with a fleet consisting mostly of Airbus A330s while United Airlines shifts towards using more Boeing 787s as they phase out older models like the Boeing 767s.