Plan the route,
know the time.
Calculate great-circle distance, estimated flight time, fuel burn, and operating costs between any airports worldwide. Multi-leg routes, wind correction, altitude TAS adjustment, and alternate planning included.
Great-Circle Distance
Calculates the shortest path between two points on the Earth's surface using the Haversine formula. Results in nautical miles, kilometres, and statute miles.
Wind Correction
Enter headwind or tailwind component to adjust ground speed and get more accurate flight time estimates. Wind directly impacts fuel burn and cost calculations.
Altitude TAS Adjustment
Select your cruise flight level to adjust true airspeed. Higher altitudes yield faster TAS due to thinner air, reducing flight time on longer sectors.
Cost Estimation
Estimates fuel cost based on burn rate and fuel price, plus total operating cost per hour for each aircraft category. Useful for quick charter quoting.
How to Calculate Flight Time and Distance
Select Your Route
Search for departure and arrival airports by ICAO code, IATA code, city name, or airport name from a database of over 60,000 airports worldwide. Add waypoints for multi-leg routes and an alternate airport for diversion planning.
Configure Aircraft & Speed
Choose an aircraft category or enter a custom cruise speed. Select your planned flight level to apply TAS correction — higher altitudes increase true airspeed. Add headwind or tailwind component for ground speed adjustment.
Set Operational Parameters
Enter taxi times for departure and arrival to calculate block time. Set fuel price per gallon for cost estimation. The calculator uses category-specific fuel burn rates and operating costs per hour.
Review Comprehensive Results
View distance in NM/km/mi, flight time, block time, fuel burn, fuel cost, and estimated operating cost. Multi-leg routes show a per-leg breakdown table. Timezone information is displayed for departure, arrival, and alternate airports.
Why Accurate Flight Time Estimates Matter
Trip Planning
Accurate distance and time estimates form the foundation of every flight plan. Block time drives slot allocation, crew scheduling, and client expectations.
Fuel Planning
Flight distance determines fuel requirements. Wind-corrected ground speed and altitude-adjusted TAS improve fuel burn accuracy for initial costing.
Crew Duty Limits
Estimated flight time feeds into FDP and FTL calculations. Block time with taxi helps ensure crew are legal and rested for the trip.
Client Quoting
Charter operators need fast, reliable estimates when responding to enquiries. Fuel cost and operating cost estimates help produce accurate quotes quickly.
Multi-Leg Planning
Plan complex itineraries with multiple stops. See per-leg breakdown of distance, time, and fuel burn to optimise routing and refuelling decisions.
Free to Use
Professional-grade calculations at no cost. No registration, no subscriptions. Instant results for any airport pair worldwide with full cost breakdown.
Understanding Flight Distance and Time Calculations
Distance & Speed
- Great-Circle Distance: Shortest path over Earth's surface using Haversine formula
- True Airspeed (TAS): Speed relative to surrounding air, increases with altitude
- Ground Speed (GS): TAS adjusted for wind component — the actual speed over ground
- Nautical Mile: Standard aviation unit, one minute of latitude (1.852 km)
- Flight Level: Pressure altitude in hundreds of feet (FL350 = 35,000 ft)
Time & Fuel
- Air Time: Calculated from distance divided by ground speed
- Block Time: Air time plus taxi at departure and arrival
- Fuel Burn Rate: Gallons per hour, varies by aircraft category and power setting
- Operating Cost: All-in hourly rate including fuel, crew, maintenance, and insurance
- Wind Effect: 30kt headwind on a 4-hour flight adds ~15-20 min and significant fuel
Cruise Speeds Used
- Turboprop: 275 kts / ~250 gal/hr (King Air 350, PC-12)
- Light Jet: 390 kts / ~180 gal/hr (CJ3, Phenom 300)
- Midsize Jet: 430 kts / ~260 gal/hr (XLS, Learjet 60)
- Super-Mid: 470 kts / ~320 gal/hr (Longitude, Challenger 350)
- Heavy Jet: 500 kts / ~420 gal/hr (Challenger 604, G450)
- Ultra-Long-Range: 515 kts / ~500 gal/hr (Global 7500, G700)
Important: This calculator provides estimates based on great-circle distance, average cruise speeds, and typical fuel burn rates. Actual values vary due to wind, ATC routing, aircraft weight, temperature, and climb/descent profiles. Always use an approved flight planning system for operational flight plans.
Frequently Asked Questions
How accurate is the great-circle distance calculation?
The Haversine formula is accurate to within approximately 0.5% for most distances. It assumes a spherical Earth, introducing a small error versus the WGS84 ellipsoid. For trip planning and quoting this is more than sufficient.
Why is actual flight time longer than shown?
This calculator shows air time based on great-circle distance. Real flights are longer due to ATC routing via airways, headwinds, climb and descent at lower speeds, and holding. Block times are typically 10-20% longer than great-circle estimates.
How does flight level affect the calculation?
Higher altitudes produce faster true airspeed (TAS) because air density decreases. The calculator applies a TAS correction factor from 0.88× at FL180 to 1.05× at FL450. This significantly affects flight time on long sectors.
How accurate are the fuel burn estimates?
Fuel burn rates shown are category averages at typical cruise power settings. Actual burn varies significantly with aircraft weight, altitude, speed, temperature, and specific aircraft model. Use these as initial planning figures only.
What does the operating cost include?
The hourly operating cost is an industry-average estimate that typically includes fuel, crew, maintenance reserves, insurance, and handling. Actual costs vary widely by operator, region, and specific aircraft. Use for initial quoting guidance.
Can I plan multi-leg routes?
Yes. Add waypoints between departure and arrival to create multi-stop itineraries. Each leg shows individual distance, time, bearing, and fuel burn, with totals at the bottom. This is useful for repositioning flights and multi-city charters.
How does wind component work?
Enter the estimated headwind or tailwind in knots. Headwind reduces ground speed (increases time and fuel), tailwind increases ground speed (reduces time and fuel). For best accuracy, use forecast winds at your planned cruise altitude.
What is the alternate airport for?
The alternate shows the additional distance, time, and fuel from your arrival airport to a diversion airport. This helps ensure you carry sufficient fuel reserves as required by regulations.
How many airports are in the database?
Over 60,000 airports and airfields worldwide including major international airports, regional airports, small airfields, and heliports. Data includes ICAO/IATA codes, coordinates, elevation, city, country, and timezone.
Can I use this for operational flight planning?
This calculator is for initial trip planning, quoting, and estimation only. Operational flight plans require wind and temperature data, precise routing, NOTAMs, weight-and-balance, and regulatory fuel reserves. Always use an approved flight planning system.
Need Complete Trip Planning & Operations?
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