I think it would be a very useful resource for those of us trying to redeem skypesos to have an up-to-date list of which partners will incur YQ when booking with DL miles. Also, it would be nice to have an idea of what the average YQ is for a typical itinerary. I realize this varies to some degree but even if we can ballpark it (for example $100-200 versus $350-450) I think it would be helpful.

I am by no means a DL expert so I'm hoping that others can provide most of the info and I will keep the post updated. Ultimately if we can get a good list together I would envision this post may be stickied. For the purposes of this list lets assume that the flights originate in the USA. (All partner flights originating in Europe used to incur YQ but according to this post YQ is no longer being applied to flights originating in Europe).

A "yes" indicates that YQ will be charged when booking w/ DL miles.

SkyTeam Partners:

Aeroflot (SU): Yes
Aerolineas Argentinas (AR): No
Aeromexico (AM): No
Air Europa (UX): Yes
Air France (AF): No
Alitalia (AZ): No
China Airlines (CI): Yes
China Eastern (MU): Yes
China Southern (CZ): Yes
Czech Airlines (OK): Yes
Kenya Airways (KQ): Yes (updated 4/23/18)
KLM (KL): No
Korean Air (KE): No (Although DL had been collecting YQ for a while)
Middle East Airlines (ME): Yes
Saudia (SV): No
TAROM (RO): Yes
Vietnam Airlines (VN): Hit or Miss
Xiamen Air (MF):

Non-SkyTeam Partners:
Air Tahiti Nui (TN): Yes
Alaska Airlines (AS): No
GOL (G3): Hit or Miss
Hawaiian Airlines (HA):
Malaysia Airlines (MH): Yes
Olympic Air (OA):
Virgin Atlantic (VS): No
Virgin Australia (VA): No (Although DL had been collecting YQ for a while)

Please chime in with other carriers that you are familiar with and I will update the post as the responses come in (and please let me know if I messed anything up)