Originally Posted by
SuperG1955
Thank you.
from
http://www.delta.com/content/www/en_...th-delta.html# (emphasis mine):
IS THIS A DELTA FLIGHT?
Not sure if you're on a Delta-marketed flight? There's an easy way to check. The marketing carrier is determined by the two-letter airline code in the flight number. So if your flight has a DL flight number, it qualifies for our mileage crediting rules. If not and you are flying a partner-marketed flight, miles and MQMs earned vary by carrier.