Hong Kong - London Heathrow Cathay Pacific/British Airways 747-400/ (13h 25m)
Los Angeles - Auckland Air New Zeland 747-400 (12h 55m)
Bangkok - London Heathrow Thai Airways/Qantas/British Airways 747-400 (12h 35m)
London Heathrow - Los Angeles Air New Zeland 747-400 (11h 45m)
I recently flew the non-stop ORD-OGG flight with UA ... about 9.5 hrs. First time travelling with UA and first time on a 777! The seats were comfortable enough in regular economy. I was hoping the plane might be equipped with PTV's for such a long flight.
My longest flight is TLV-EWR (w/ CO on a T7)
I fly this route (EWR-TLV-EWR) at least 6 times per year.
The flight from EWR to TLV is a little bit less than 10 hours, and the flight from TLV to EWR is about 12 hours.