Flight Time Calculator
Part of our Time & Date Calculators
Estimate flight duration for any route. Enter the distance between airports and aircraft type to calculate approximate flight time, including taxi and takeoff allowances. Perfect for trip planning and itinerary scheduling.
How to Use This Flight Time Calculator
Enter the flight distance in miles between your departure and arrival airports. Select the aircraft type or enter a custom speed. Optionally set your departure time and ground time allowance. The calculator will estimate total flight duration and arrival time.
What Affects Flight Time?
Several factors influence actual flight duration:
- Aircraft type: Commercial jets cruise at 500-580 mph, while smaller planes are slower
- Wind conditions: Headwinds can add 30-60 minutes, tailwinds can reduce time
- Flight path: Direct routes are faster than those with detours around weather or restricted airspace
- Altitude: Higher cruising altitudes generally allow for faster speeds
- Airport congestion: Busy airports may add taxi and holding time
Flight Time Formula
Air Time = Distance / Aircraft Speed
Total Flight Time = Air Time + Ground Time
Average Aircraft Speeds
- Boeing 737/Airbus A320: 500-530 mph cruising
- Boeing 777/787: 560-590 mph cruising
- Regional Jets (CRJ/ERJ): 350-400 mph cruising
- Turboprops: 250-350 mph cruising
Flight Planning Tips
- Add 15-30 minutes buffer for taxi and takeoff
- Account for time zone changes at your destination
- Check typical flight times on airline websites for comparison
- Consider layover times when booking connecting flights
Frequently Asked Questions
Why does my flight take longer going west than east?
Prevailing jet stream winds blow west-to-east at 100-200 mph at cruise altitude. A New York-to-Los Angeles flight typically takes 6 hours westbound but only 5 hours eastbound — the same aircraft, just fighting or riding a 150 mph headwind. Polar routes (NYC to Tokyo via Alaska) exploit the jet stream most efficiently.
How do I calculate great circle distance vs. straight-line distance?
Great circle distance follows Earth's curved surface and is always shorter than the rhumb line shown on flat maps. For LAX to London, great circle distance is 5,440 miles (over Canada/Greenland) versus 6,250 miles if you flew due east. The Haversine formula computes great circle distance from latitude/longitude coordinates.
What's a typical cruise speed for major airliners?
Boeing 737 cruises at Mach 0.78 (~516 mph), Airbus A320 at Mach 0.78 (~514 mph), Boeing 777 at Mach 0.84 (~554 mph), and Boeing 787 at Mach 0.85 (~561 mph). True groundspeed varies with wind: a 777 with a 100 mph tailwind covers 654 mph over the ground.
Common Mistakes to Avoid
- Using flat-map distance: Mercator projection distances are wildly inaccurate for long flights. Always use great circle (Haversine) distance — Newark to Beijing is 6,830 miles great circle, not 8,200 miles as a Mercator ruler suggests.
- Ignoring wind effects: A 150 mph jet stream tailwind shaves 1 hour off a 6-hour westbound trip and adds 1 hour eastbound. Always factor in seasonal wind patterns (winter jet streams are strongest).
- Forgetting taxi/climb/descent time: Aircraft only cruise during the middle portion of flight. Add 15-20 minutes for taxi and climb, plus 15-20 minutes for descent and taxi at destination — total 30-40 minutes of non-cruise time per flight.
- Confusing local times across zones: A flight departing JFK at 6 PM and arriving CDG "at 7 AM" took 7 hours, not 13 — Paris is 6 hours ahead. Subtract time zone offset before computing duration.
Quick Reference
| Aircraft | Cruise Speed | Range |
|---|---|---|
| Boeing 737-800 | Mach 0.78 / 516 mph | 3,115 mi |
| Airbus A320neo | Mach 0.78 / 514 mph | 3,500 mi |
| Boeing 777-300ER | Mach 0.84 / 554 mph | 8,555 mi |
| Boeing 787-9 | Mach 0.85 / 561 mph | 8,786 mi |
| Airbus A350-900 | Mach 0.85 / 561 mph | 9,700 mi |
| Embraer E175 (regional) | Mach 0.78 / 514 mph | 2,200 mi |