Originally Posted by
BackSlash3
YYZ-SFO Oct 15. $399. R5 at 24h. Accepted. Flight boarded with J1 R1.
The wait lists, even for Prestige e-upgrades, clear at T-24h. Since I can't begin the check-in process until T-24, the e-upgrade list should clearing should beat any LMU request by a minute or two.
It's upgrades at the airport and op-ups that are being replaced by LMUs.
That is nowhere close to true. The wait lists frequently don't clear at T-24, especially for popular flights like YVR-SYD. As an E on that flight there is nearly no chance that an upgrade requested at the 4 day window clears prior to the gate. Same thing for many transcons, as J gets low (generally under J3) they hold the seats open for same day changes or last minute sales and then assign the upgrades at the gate if the seats are still free at boarding.