With this calculator you can quickly calculate the distance per segment or for your entire itinerary. Simply input your flight itinerary by typing the IATA airport codes of the airports you will consecutively visit during your trip, separated by a - character.
Example: When your itinerary is Amsterdam to Los Angeles with a transit in Paris, you will enter the following string into the calculator input box:AMS-CDG-LAX
This will give you the distance in both miles and kilometers for a one way trip. For a return trip just complete the search query by entering the airports in the reverse order:AMS-CDG-LAX-CDG-AMS