Originally Posted by
richarddd
We plan to fly JFK-CDG in business on AF flights. I'm I better off booking through AF or booking the DL codeshares?
Sorry for asking such a basic question.
Assuming the cost is the same, the main thing is how it'll credit.
The MQMs will be the same, unless you managed to book the paid "O" business class on AF (which only earns 100% MQMs and may have crediting headaches since it's also used as an award class:
Air France / KLM O paid business class fare earning with Delta (Consolidated Thread) )
If you book it with DL flight numbers, you will earn MQDs based on the actual fare paid including carrier-imposed fees. RDMs will be some multiple of this number depending on your SkyMiles status.
If you book it with AF flight numbers you will earn MQDs equal to 40% times the distance flown. RDMs will be 2x distance plus potentially a multiplier depending on your status (or only 1x in paid "O" class on AF)
Which is advantageous depends which set of numbers you care about maximizing and what the distance traveled will be.