When to request upgrade
For the first time I am going to try e-upgrade a Tango Plus ticket. I am flying to FRA on Sept 8 and back from LHR on Sept 12. As an E, do I request the upgrade online exactly 96 hours before departure? As I am flying from YWG, do I do this 96 hours before YWG departure or YYZ departure?
Sept 8 AC 876 looks to me like I have a chance of upgrading. Sept 12 AC 857 looks even better. Am I reading this right? Anyone care to guess?
Thank you.