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Flight distance calculator

The distance between two airports as the crow flies — the great-circle distance from the haversine formula — plus a realistic flight distance with a routing allowance and an estimated flight time from the aircraft's cruising speed. Enter IATA codes (JFK, CDG…), city names, or coordinates.

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Flight distance calculator works straight from this page — free, instant, nothing to install. It covers JFK, CDG — adjust any of them and the result follows immediately.

How to use it

  1. Open the tool — no signup or install needed.
  2. Enter your input or adjust the available options.
  3. Get your result instantly, then copy or download it.

Frequently asked questions

What does Flight distance calculator do?

The distance between two airports as the crow flies — the great-circle distance from the haversine formula — plus a realistic flight distance with a routing allowance and an estimated flight time from the aircraft's cruising speed. Enter IATA codes (JFK, CDG…), city names, or coordinates.

What does a concrete case look like?

CDG → JFK ≈ 5 837 km — the tool shows every step in between, not just the final figure.

What does it take into account?

It factors in JFK, CDG. Change any of them and the output follows immediately.

When would I actually use this?

Answering a scheduling question exactly: how many working days until a deadline, what date falls sixty days out, and what time that is for a colleague elsewhere.

What is the most common mistake?

Counting days by subtracting dates and forgetting whether the endpoints are included. Inclusive and exclusive counts differ by one, which is the difference between meeting a deadline and missing it.

How is Flight distance calculator different from Flight Time Calculator?

They sit next to each other but answer different questions. Flight Time Calculator: estimate flight duration from route distance and cruise speed, with taxi/climb/descent overhead. Pick whichever matches what you're starting from — both are free.

Is there a tool for the next step?

Flight carbon footprint calculator is the closest one after this: Estimate the CO₂ emissions of a flight from its distance.

Where do the figures come from?

Calendar arithmetic follows the proleptic Gregorian calendar and the IANA time-zone database, so daylight-saving transitions and leap years are handled. Public holidays vary by country and region and are not assumed.

Further reading

All guides →
How-toHow to Estimate Flight Time: Distance, Cruise Speed and OverheadEstimate a flight's duration by dividing the great-circle distance by cruise speed, then adding taxi, climb and descent overhead. A simple, reliable method.GuideSchool Holiday Zones: Which One Applies to YouIn France only two of the six holiday periods differ between zones — and those two are two weeks apart from end to end. In Germany the summer break start spans thirty-five days between Länder. Neither can be computed: they are decreed, and a stale copy is the real hazard.ExplainerYour Flight's Carbon Footprint, ExplainedHow much CO₂ does a flight emit? Learn the per-passenger-kilometre figures, why short hops are worst per mile, and what the numbers really mean.ExplainerLuggage Weight and Size Limits: How Airlines Actually Measure Your BagLinear dimensions, volumetric weight and typical cabin and checked limits explained, so your bag clears the gate without a surprise fee.ExplainerKnots to km/h: The Conversion and Where Knots Are UsedOne knot equals exactly 1.852 km/h and about 1.15 mph. See the exact conversion factor, why the nautical mile exists, and where aviation and shipping use knots.How-toHow to Recover from Jet Lag: A Time-Zone Reset PlanJet lag eases at roughly one day per time zone crossed. Learn why eastward travel is harder, and follow a light, sleep and meal plan to reset your body clock faster.