Non-essential flights of the week

I asked recently how on earth The Righteous were going to distinguish between 'essential' and 'non-essential' flights* - the first question of course being from whose point of view we assess the essentiality of any flight.

The Metro very helpfully reports the case of at least three non-essential flights in this article. Or five, depending on your point of view.

* I am sure that this database will be very useful...