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Flight Duration & Time Zone Delta Calculator

Calculate true in-flight elapsed duration across international time zones.

Tool inputs stay in your browser · optional AI search sends your query

Good to know: Adjusts for international departure and arrival UTC time zone offsets to determine actual flight airtime.

How to use it (step by step)

  1. 1Fill in the boxes: “Departure Local Time”, “Departure UTC Offset (e.g. +8 for Manila)”, “Arrival Local Time”, “Arrival UTC Offset (e.g. 0 for London, -5 for NY)”. Example numbers are already there so you can see how it works; replace them with yours.
  2. 2The result updates instantly as you type (on a phone it is below the boxes).
  3. 3The bold line is the main answer. Tap Copy next to any value to copy it.

Words to know

Time zone / UTC
Different parts of the world have different clock times. UTC is the world reference time; Manila is UTC+8.

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