The overall length of A380 is 73 meter (239 ft 6 in).
The length of Boeing B747 is 70.6 m (231 ft 10 in) [Boeing 747-100, 747-200B, 747-300, 747-400, 747-400ER] and 76.4 m (250 ft 8 in) [Boeing 747-8I].
The length of longest airliner Airbus A340-600 is 75.30 m 246 ft 11 in.