Originally Posted by
gummy
When do Upgrade with Miles seats usually open up on D1 flights? Is there a quota? And do they open more seats up for upgrades closer to the flight date? I'm looking at a PDX-NRT that has 10+ D1 seats listed as open but agents said no Upgrade with Miles available.
Seat map doesn't equal seats for sale. Not everyone preassigns, especially non-North Americans. There's no pattern. Closer to DoD they'll know better how full, so that's the one plus. Note mileage upgrades don't transfer to the gate. Thus even if there's leftover seat prior to departure, no upgrade.