Aircraft Fuel Consumption Calculator
Estimate total aircraft fuel usage and fuel cost for a flight given distance, aircraft size, fuel price, and passenger load factor. Useful for pilots, operators, and aviation students planning flight budgets.
Last updated: May 2026
About this calculator
Jet fuel consumption depends on aircraft size, distance flown, and how efficiently the aircraft is loaded. This calculator uses a per-mile burn rate set directly by the aircraft model you select: 4.5 gal/mile for a Boeing 737, 5.8 for an Airbus A320, 8.2 for a Boeing 777, and 12.5 for a Boeing 747. Load factor (the percentage of seats filled) affects efficiency: a lightly loaded aircraft burns slightly more fuel per seat-mile. The formula is: Fuel Cost = distance × burnRate × fuelPrice × (1 + (100 − loadFactor) / 500). The load factor adjustment term means a 50% load factor adds a 10% fuel cost penalty compared to a full aircraft. This reflects the real-world relationship between payload efficiency and fuel economics.
How to use
Assume an Airbus A320 flying 500 miles, fuel priced at $6.00 per gallon, and a load factor of 80%. The burn rate for an A320 is 5.8 gallons/mile. Plug into the formula: Fuel Cost = 500 × 5.8 × 6.00 × (1 + (100 − 80) / 500) = 500 × 5.8 × 6.00 × (1 + 0.04) = 500 × 5.8 × 6.00 × 1.04 = 17,400 × 1.04 = $18,096. So a 500-mile A320 flight at 80% load with $6/gal fuel costs approximately $18,096 in fuel.
Frequently asked questions
How does load factor affect aircraft fuel consumption?
Load factor measures what percentage of an aircraft's seating capacity is occupied. A fuller plane distributes fuel costs more efficiently across more passengers, lowering cost per seat. In this calculator, a lower load factor increases the fuel cost multiplier: the term (100 − loadFactor) / 500 adds a proportional penalty. At 100% load the adjustment is zero; at 50% load there is a 10% cost increase. In practice, airlines carefully manage load factors because even a few percentage points of improvement can save millions of dollars annually in fuel.
What is the average fuel burn rate for different types of aircraft?
Fuel burn varies enormously by aircraft category. Small general aviation aircraft (like a Cessna 172) burn roughly 8–12 gallons per hour, while light jets burn 50–100 gallons per hour. Medium narrowbody jets like a Boeing 737 consume around 700–900 gallons per hour. Large widebody aircraft like a Boeing 777 can burn 2,000+ gallons per hour. Per-mile rates in this calculator (4.5 for a 737, 5.8 for an A320, 8.2 for a 777, and 12.5 for a 747, all in gallons/mile) are simplified approximations designed for quick comparisons rather than precise flight planning.
Why does jet fuel price vary so much and how does it affect operating costs?
Jet fuel (Jet-A) is a kerosene-based product whose price tracks crude oil markets, refining capacity, regional supply chains, and airport-specific contract pricing. Prices can range from under $4 per gallon at some US general aviation airports to over $10 per gallon at remote or international locations. Fuel typically represents 20–30% of a commercial airline's total operating costs, making it one of the largest expense line items. Even a $0.50/gallon increase on a long-haul route can add tens of thousands of dollars per flight, which is why airlines hedge fuel costs using futures contracts.