The 21st Century Boeing 747X family offers the best non-stop range capability, speed and economics in the high-density, long-range market. This computer rendering shows four members of the 747X family. From the foreground are the 747X Stretch, the 747X Stretch Freighter, the 747X and the 747-400X. Other potential models include a 747X Stretch Domestic model and a 747X Combi airplane. The 747X family is compatible with today's airports making these airplanes easier to integrate into existing 747 fleets.