Question about luggage and code share partners
 

I'll be flying ATL to LHR for business in May on DL. After my business is concluded, I want to take a mini vacataion to France or Spain, lets say NCE. I can fly from LHR to NCE, have my minivacation, and then return NCE LHR ATL. N.B. this is prior to DL's direct service between NCE and ATL.

Question - if I fly NCE to LHR on BA, will my bags automatically get from LHR to ATL on DL or do I have to collect them in London, go through customs, etc.?

Based on my experience, if you inform the check-in agent, he can connect the two itineraries and check the bags all the way through. Even if there are two different airlines involved - it may be a problem if two different handling agencies should be involved (different airlines use different agencies). If both of your flights are with the same airline, I would not expet any problem at all.

It's up to the agent at the BA counter in NCE, and will be influenced by whatever BA's policy is. Asking in the BA forum may be helpful.

If you book LHR-NCE with AF, through checking to DL should be no trouble, assuming MCT etc. is met.