Just curious what other folks have seen. I have a flight that I'm ticketed in WT+ on that hasn't had Avios upgrades available to CW since I booked it. It's showing J6 about 30 hours prior to departure and I'm not sure if checking in will impact my ability to upgrade the flight. Has anyone been able to process an upgrade using Avios within 24 hours of a flight on BA? I don't believe they offer any sort of TOD buy-up opportunities? ETA: This is a TATL flight.