Originally Posted by
holtju2
Most of the cases yes. There are instances where AF has a hard block and treats is as entirely their inventory for revenue and awards.
You can book "AF" flight HEL-CDG that is operate by Finnair using SkyMiles. Been there done tat
Same for the JL flight CDG-NRT. It is bookable using DL SkyMiles, as long as it's done under its AF codeshare.