Time flies when you are ... flying

[RooFlyer]

Turns out I have spent about 1% of my lifetime in the air (per AFF Flight Tracker). In truth a bit more, as so many early flight not on there.

 

[opusman]

Don't forget to take time dilation into account.

 

[clazman]

Also add the time waiting in the lounge / security

 

[JohnK]

A lot more than 1% if adding time to get to/from airport, waiting for flights and delays. Sometimes it is fun....