Rumours, legends and things people swear are true
Every private-jet story you have heard at a dinner party — the gold-plated 747, the $3,000 biscuits, the jet that outclimbs a fighter — checked, and labelled honestly.
“Private jets are the biggest source of aviation emissions.”
By total volume, no: private aviation produced roughly 15–20 million tonnes of CO2 in 2023, around 2% of commercial aviation's emissions and well under 4% of all civil aviation's on the highest estimates. By emissions per passenger, yes: a private flight can emit five to fourteen times more per person than an airline seat on the same route, and the roughly 250,000 people who fly private have a per-capita footprint almost nobody else matches. Both halves are true; the rumour picks the wrong one.
“Private jets already run on sustainable aviation fuel.”
Sustainable aviation fuel (SAF) is real, certified for use in every business jet at blends of up to 50%, and available at a growing number of airports. But it was about 0.6–0.7% of global jet fuel in 2025, and business aviation's share is not obviously higher than airlines'. Most 'flies on SAF' claims are book-and-claim certificates — paying for SAF to be used somewhere — rather than SAF in the tank. Widely *available* in principle; widely *used*, no.