Originally Posted by
Grouchy
They do, have booked one through Delta 10 minutes ago & since Delta, KLM and AF more or less use the same fare structure they have the same (dis)advantages. If you want to be flexible you simply ask for a M-fare.
Correct DL can ticket and sell all AF/KLM fares and flights. However DL can't sell a DL fare for only CDG-AMS. DL only can place it's DL code on that flight when part of a continuing journey from the US. Just because DL takes your money doesn't mean they're the carrier you bought a fare from.
The booking classes maybe the same but fare rules are quite strict on AF/KLM intra-Europe fares.