Does anyone know of an airline, other than Pointafrique (their dates are not convenient), who fly from Europe (preferably Brussels, Amsterdam, Paris or Frankfurt) to Mopti?

This may be too late, but, I would suggest flying into Bamako, and then catching a puddle jumper over to Mopti. I highly doubt any airline would fly from Europe, directly into Mopti, but, I may be wrong.

If you have time, though, the drive from Bamako to Mopti is great! (though extraordinarily bumpy)

Since I couldn't find anything to Mopti, I decided to fly to Ouagadougou instead. I'm going to Burkina also anyway, so it isn't as much of a detour as Bamako.

But thanks for your suggestion! Maybe I will try this some other time.