-
greenwashing
As I said before, your first order approximation for resource consumption is how much something costs. Flying is a thing because it's much cheaper than sailing.
Just in terms of fuel burn, modern wide body jet airliners are of the order of burning 1-2 times your own weight in jet fuel for an East Coast to Western Europe crossing (100-200kg, depending on aircraft type, capacity and load factor). QE2 burns nearly 2 tons of bunker oil per passenger to get from NY to Southampton.
For comparison, a single-occupant motor car doing 50mpg burns about 250kg of petrol or diesel to cover the same distance.
Speaking of greenwashing (upthread), what's the opinion here about an ocean crossing on the QM II vs a flight? If flying from here, we'd have one stopover on the way to UK, if sailing we'd still have to get to NYC, a very long train trip or shortish flight (from Winnipeg).