85 Hours and 19 Minutes in one session!
Making my way from Manila to all 7 continents, I intended to travel the world on a Philippine Airlines A350-900
Leg:
RPLL (Asia) - KJFK (N. America) - SGBR (S. America - FACT (Africa) - NZFX (Antarctica) - EGLL (Europe) - YSSY (Australia)
At the end of the flight I got 85 Hours and 19 Minutes of total flight time. Although I got disconnected from live server while I was making my descend to (YSSY the final leg).