Tossing around ideas for an international trip, trying to be eligible for an upgrade with miles which requires M+ fare. Is it possible to get a round trip itin booked with an M fare going outbound, but just the standard LUT on the inbound leg? Or am I stuck booking all-M fares on both legs of the trip?
Alternatively, I've heard that on an already-booked fare, you can "opt up" and pay the difference to have your itin bumped up into the fare class you want, and perhaps get the change fee waived for this. If my family member I'm traveling with has already booked their RT fare in LUT, can they "opt up" one leg of it so we can BOTH try for an upgrade with miles, or are they only allowed to upgrade the fare entirely for all possible legs?
Hope that question makes sense. I tried to do some preliminary searching but didn't find much, particularly about upping the fare on one part of an already-booked RT trip. TYIA for any guidance!
Alternatively, I've heard that on an already-booked fare, you can "opt up" and pay the difference to have your itin bumped up into the fare class you want, and perhaps get the change fee waived for this. If my family member I'm traveling with has already booked their RT fare in LUT, can they "opt up" one leg of it so we can BOTH try for an upgrade with miles, or are they only allowed to upgrade the fare entirely for all possible legs?
Hope that question makes sense. I tried to do some preliminary searching but didn't find much, particularly about upping the fare on one part of an already-booked RT trip. TYIA for any guidance!