FlyerTalk Forums - View Single Post - Econ, Prem Econ, J-class, or UG with miles?
Old Jan 15, 2014 | 8:40 pm
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MSPeconomist
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You can't upgrade with DL miles on VS. Also, AF tends not to make upgrade inventory available, but M B Y fares upgrade into premium economy while some premium economy fares can upgrade into business class.
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