Thinking of Fuel alone...
10 tonne first hr, 6-7 after that.. Im think 75-80 tonne of burn..
for at max 116 people...??? 650KGs in gas alone... per person.
This is a money loser that a child can figure out.
BA and LH offer transatlantic premium service, but its in A319 or B737's and only for 7-8hr sectors.