Prince Charles has booked the entire first-class and business class section of a jumbo jet to fly to New York - to pick up an environmental award.
He is travelling by scheduled flight - instead of a chartered or private jet - to reduce his carbon footprint, reports the Daily Mail.
But the Prince and his 20-strong party will travel exclusively in the first and club class sections where there are 62 seats.
This means their carbon footprint is three times what it would be if every seat was used.
The Prince is to receive the Global Environmental Citizen Award from Harvard Medical School's Centre for Health and the Global Environment.