Restrictions:
You cannot request or use Mileage Plus Upgrade Awards with award tickets or
tickets for which you’ve already received a confirmed upgrade.
【在 h**********0 的大作中提到】 : 如题。 谢谢。
h**********0 发帖数: 1467
3
谢谢
or
【在 t******n 的大作中提到】 : Restrictions: : You cannot request or use Mileage Plus Upgrade Awards with award tickets or : tickets for which you’ve already received a confirmed upgrade.
