Alitalia is running a promotion for 15% off bookings made by noon (European time, 6AM Eastern) tomorrow by using coupon code WEEK15US for travel between October 1st and March 31st. The promo is applicable to Delta flights on itineraries entirely within the US in addition to flights actually operated by Alitalia.
For example, a simple JFK-LAX roundtrip on Delta priced with ITA:
The same itinerary, priced with the coupon on Alitalia’s website:
It’s my understanding that these fares earn full Skypesos with Delta (or could be credited to Alaska).