Originally Posted by
Procter
Thanks. Does the mileage cost of upgrade vary dynamically or it is fixed? Sorry about all these novice questions, haven't been flying with DL for a long time. Just want to see if my current balance is enough to cover this IAD-ICN-IAD trip (should the upgrades be available).
If you have a Y or a B fare on a DL-operated, KE marketed (and by Y I mean FULL Y, not just abbreviation for anything coach), you may be able to access an OY fare via a MUA for 40,000 miles. Inventory availability is required and not guaranteed