Originally Posted by
flytoeat
You submit the Delta boarding passes. Credit will be given for the Delta flights flown before April 30th.
With the exception if they were booked before December 19th, 2016 (which should allow for credit for flights flown after April 30th).
As is typical with most airline programs, flights operated by non-partners (regardless of ticketing or marketing carrier) do not earn miles --
https://www.alaskaair.com/content/mi...onditions.aspx
"Mileage will not accrue on flights operated by non-partner airlines."