Quote Originally Posted by walpurgis View Post
Jets may look normal, but everything is actually built upside down to avert this exact problem .
Surely, Sir, you are joking? Aren't you?

Longest flight I can remember was Shanghai to LHR, though Bangkok to LHR and LHR to Beijing are also long. I actually can't remember if we did LA to Sydney without a stop - which is certainly possible nowadays. LHR to SF or LHR to LA can take varying times - even if done in one shot. Depending on the wind they may take 10 hours, but if the jet stream isn't helping then 12 hours might be needed. I thought LHR to Delhi was less time - but it's not a lot shorter. London to Havana is also quite a long flight.