Does anybody know of a site that can do an historic analysis of flights leaving from Beiging on the same day as BA38?
You could look at the OAG timetables for that. We have a complete database of all flights that have operated in and around North American Airspace for the last several years. I could have a look in that. I would think that a flight out from Beijing to the Canadian East coast would be similar in duration and OATs experienced but I would have to check with our weather lab to confirm that.