Originally Posted by
vernonc
Yup, sorry I should have been clearer for OP.
OP - you can bid for an upg that normally closes 48 hrs before dep. Or you have the option of LMU at checkin. Both of these are dependent on space.
Fairly sure bid up offers close t-96 and clear between 96 and 72 hours normally.
Theres an option on AC homepage to see if your flight is eligible.