777-9. The 777-9 is stretched by three extra seat rows and flies 250 nmi (460 km; 290 mi) farther than the 777-300ER with the same weight. It is 9.4 ft (2.9 m) longer than the -300ER for a 251 ft 9 in (76.7 m) length. It will seat typically 426 passengers over a range of 7,285 nmi (13,500 km; 8,383 mi).