Moderators, please relocate as appropriate. I plan to do a trip in business class on China Eastern from YYZ to SIN. I have seen some videos on YouTube on aspects of the flight and I find them to be fairly accurate. My question is that for this trip, I need to do a positioning flight. If I fly from a US city to YYZ to position on a US passport, are there any foreseeable passport or visa issues? Thanks in advance for your response.