How far have you flown?
If you would like to calculate the air miles you have already flown there are several things you might find interesting. Flights follow, what are known as Great Circle routes, the shortest distance between two points on a sphere. As a result you may find that your flight path takes you to the far North over Iceland when you are going East or West. Did you know, in the early days of flight, pilots followed giant concrete arrows on the ground. A bit more on the history of flight paths can be found here.
To calculate the air miles you have already flown the calculate your airmiles website is the one we use. If you click on the link it will take you to the site and to my example of a flight path and distance between London Heathrow Airport (airport code -LHR) and New York John F Kennedy Airport (airport code -JFK). All you will need is the airport codes for the place you took off and landed. The website will help you find these.
Happy calculating! Been to the moon yet?!