So I booked a flight from PIT-Bangalore (via CDG, of course) and I cannot decipher what FF program to use.

The main question is: Do I get full banked NW miles on an AF coded-DL operated flight? Or are there percentage reductions as NW clearly states on AF coded-AF operated flights?

I cant find this answer anywhere.

My assumptions using my WP number:
-I get full miles regardless of class on AF coded-DL operated PIT-CDG (see above question)
-I get 25% banked miles on CDG-BLR for flying in "L"
-However, I get to collect the 10,000 mile promotion NW is running for PIT-CDG

My assumptions using my Skymiles number:
-I get full miles regardless of class on AF coded-DL operated PIT-CDG
-I ALSO get full miles regardless of class on AF coded-AF operated CDG-BLR
-DL is NOT running a promotion on PIT-CDG for Skymiles members

Overall, it seems that my NW# is the best to use in this case?

Re: NW
Full miles on DL-operated PIT-CDG. Try to book this as a DL flight if at all possible without the AF number; but it's not a requirement AFAIK.
Yes, you get 25% EQM for the AF-operated "L" class flight CDG-BLR
Yes, you get the 10,000 bonus miles. Again, it would be easier if it's booked as a DL flight number. It's not listed as a requirement in the T&C's but rather not leave it to chance.

Re: DL
Incorrect about AirFrance "L" class. AF "L" class earns ZERO miles in the SkyMiles program. (For reference: http://skymilesoffers.delta.com/airl....php#airfrance)
I think Delta is running the same 10K bonus miles promotion for PIT-CDG but their website makes it incredibly difficult to find anything about promotions. NWA.com is much better at this.

Hands down NW WP wins this one.

-RM

https://www.delta.com/marketing/inte...al09/index.jsp
Delta is running the bonus promo.. however bank them to NW and then transfer to DL if necessary.