FlyerTalk Forums - View Single Post - Miles & More eVoucher upgrade Questions [merged Q&A]

Apr 26, 2010, 12:30 pm

#4

volta

Join Date: Sep 2007

Programs: BAEC, M&L, Bonvoy

Posts: 1,339

Rule of thumb:
for which you get full mileage credit.

If you get anything less then 100%, then most probably you can't upgrade that ticket.

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