Hi there! Ironically, I did the exact thing you mentioned yesterday, except it was from ORD to HKG! Out of Chicago, overhead YWG and then over the Pas, Whitehorse, Nome AK, then into Russian Airspace at Yuree and down into Korea, Japan, Taipei, the HKG, total enroute: 16 30...Quite a busy route, at least until we hit mother Russia, hope you can find the flight tracking websites, they will sHow the flight until it's off radar or into foreign airspace.
Merry Christmas to you all in the Great White North, from us in the steamy tropics! Kinda miss the cooler air, but you can keep the -40C stuff you get there in the middle!
Cheers
LC
PS...three hours after dep will be too long...more like about 1+45 would do it...btw it was overcast when we went over, I spoke to my father in law just before we launched and he gave me the weather report! Good luck...