https://www.delta.com/marketing/travelmexico/index.jsp


The promo may have been available for weeks, but DL.COM ran a banner on it today.

I've so far taken three of these flights within the time frame and, registering today, faintly hope I'll be retroactively credited.

Note: The "triple miles" BE offer from ATL is on an Embrear 170. DL's website and customer service do not agree on BE amenities such as catering.