Marriott Rewards has quietly added Turkish Airways to its list of airline partners that members can convert points to.
Marriott Rewards members can also automatically deposit the points that they earn from stays to airline miles, but that is not usually the best option.
You can access Marriott’s web page for airline partners here.
Points To Miles Conversions
Marriott Rewards members can convert up to 140,000 miles at a time to 35,000 Turkish Airways Miles&Smiles.
Travel Package (Hotel + Airlines Miles)
Converting Marriott Rewards points to airline miles via Travel Packages (read more here) is always a better deal. You get one week hotel awards + up to 120,000 miles for set number of points. The Turkish Airways conversion table is not as generous as with some other airlines. You can still, however, get one week hotel award at category 1-5 hotels + 85,000 Miles&Smiles for 270,000 Marriott Rewards points.
I would expect that there are some bonuses soon offered for Turkish Airways Miles&Smiles member stays at Marriott hotels to celebrate this new partnership. Remember that it is always better deal wot convert Marriott Rewards points to miles via Travel Packages option versus direct deposit or regular conversion.