Hi guys, I've just noticed that (as it seems to me) all 4U flights can be booked on the X3 website. What is the sense behind this? I fully understand that X3 sells tickets for AB or ST flights, because of the mutual share-holding, and the fact that all B737-700's of X3 are now operating for AB. But why offer 4U flights, as 4U is affiliated with LH? On the contrary, X3 flights cannot be booked using 4U's website, only those operated by DE.
I appreciate your thoughts and comments