Point your web browser to webflyer.com/travel/milemarker/. This website will provide you with air mileage for both travel within the United States as well as international travel.
Type in the airport codes for your departure airport and your arrival airport. If you do not know your airport code, you can visit world-airport-codes.com/ to look up the airport code you need.
Enter optional cities that you may be traveling to. If you are making multiple stops, the website allows you to enter up to four total destinations.
Click the "how far?" button and the total mileage will display. The total distance will be displayed in miles and kilometers. The output will also provide you with a round-trip distance as well.
