Originally Posted by
thrwwrtlvsn
That is very good to know. I actually tried to do a few simulation on Flight Network and apparently whenever there is a MF-coded on KL flight, it is not possible to choose your seat during booking but it is possible on KL-coded ones.
BudgetAir returns an all MF-coded flight with business on KL-operated legs without the choice to choose any seat (even MF flights). It is still showing they are in business before finalizing the payment.
If you can find a MF coded European in business class even after payment please share the name as this will be helpful for others
If your flight is MF coded but KL operated you cannot select seats until OLCI. KLM website will still show the itinerary but will not show a link to assign seats (even paid in Eco) on shorthaul or long-haul flights.