Originally Posted by
WhiskeyBravo
AF and KL super deep discount buckets now book or "map" into DL Basic Economy. You will not get main cabin benefits. Even if your fare bucket isn't "E" if you try and get any main-cabin benefits by calling DL and asking, they'll just tell you you're in basic economy.
I just booked this morning JFK to DTW to Europe and back for $600 and it let me pick my seats on all four segments. This is Air France Operated by Delta. So definitely worked for me. And yesterday I had booked the same ticket but just JFK to Europe and back for $600 and it let me pick my seats on both segments. So it definitely worked for me.