This tool is used to calculate the flight time between different cities.
I spent one or two days writing this code. This small program is very interesting and useful, especially when you book the airline ticket and do not know how much time it'll cost during each phase.
Haneda Airport is a lot more convenient for most travelers to fly into than Narita International Airport owing to the distance from Tokyo for both. It is not always an option. Delta for example only flies in and out of ...