Berlin Tegel Airport continued operating its daily non-stop Tegel–JFK service until Delta Air Lines assumed most of Pan Am's transatlantic scheduled services during 1991. Pan Am Express, which was not included in Pan Am's IGS sale to Lufthansa, continued operating all of its domestic and international regional scheduled routes from Tegel as an independent legal entity until its acquisition by TWA in 1991. Following TWA's takeover of Pan Am Express, the former Pan Am Express Berlin operations were closed. Until December 1994, Lufthansa also contracted Euroberlin to operate some of its internal German flights from its new Tegel base, making use of that
Berlin Tegel Airport with the airline's transatlantic services at the latter airport, Pan Am withdrew its non-stop Tegel–JFK service at the end of the summer timetable, in October of that year. Following the cessation of direct Tegel–New York City scheduled services, Pan Am continued to operate affinity group/Advance Booking Charter (ABC) flights from Tegel to the US on an "ad hoc" basis. From the start of the 1974–75 winter season, Pan Am began operating a series of short- and medium-haul week-end charter flights from Tegel under contract to a leading West German tour operator. These flights served popular resorts in the Alpine region