For a typical big jet, such as a Boeing 747-400 or an Airbus A380, the fuel mileage can be around:
- 0.59 miles per gallon (0.25 kilometers per liter) for a Boeing 747-400 when flying at cruising altitude.
- 0.49 miles per gallon (0.21 kilometers per liter) for an Airbus A380 when flying at cruising altitude.
These figures represent average fuel efficiency during a typical long-haul flight and can vary depending on factors such as the aircraft's weight, weather conditions, and flight route.
It's important to note that fuel efficiency is just one aspect of an airline's operating costs. Other factors, such as passenger load, cargo weight, and operational efficiency, also play a significant role in determining the overall profitability of a flight.
