FlyerTalk Forums - View Single Post - Using Global Cert on NRT-DTW - Upgrade to D1 only or also PE from Economy

Jan 8, 2018, 10:37 am

#15

MSPeconomist

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Quote:

Originally Posted by DeltaFan4Now

O availability correlates to mileage upgrade availability - perhaps that equals GUC as well?

Define "correlates" please. The O inventory bucket on DL is award tickets in D1 (and other flights with business class?).

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