Originally Posted by
Xandrios
Your FB numbers needs to be the main number in the booking. However if you are logged in to any Skymiles account on the website or app, then Delta will automatically put that number in instead.
Basically if you wish to earn with Flying Blue you will have to logout on the Delta website (And do not open any itineraries on the delta website while logged in), as well as the app. This does reduce the functionality of both platforms somewhat. In the end the question that you should probably ask is if it is worth collecting with Flying Blue, or if it would not be easier/faster to do so with Skymiles. Especially if you are based in the US it may actually be easier to gain status with Skymiles.
Originally Posted by
fifty_two
ok so as suggested , do not login at all while using KL website/app , always use your FB id , and ensure it appear on your BP when flying
Also , there should be a process to unclaim flights if by accident they were credited to your DL skymiles account , but thats a question for DL forum
Unlike AF/KL websites, logging will not cause FF number to change.
You can setup passenger profiles to include your FB number, just don't login to app with DL login when booking. It'll save a profile with your FB number. (Again it won't change if you open it after booking while logged in. However when booking new ticket, if logged in, DL assumes you're booking using your DL number)
Once DL number is added, you must contact reservations to change.