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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 carbon footprint calculator?

They sit next to each other but answer different questions: Flight carbon footprint calculator is the one to open when you need it to estimate the CO₂ emissions of a flight from its distance. Pick whichever matches what you're starting from — both are free.

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

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