I had a similar situation for flights this July/August. I generally do not like Alitalia. That being said, try this: find flights you like on DL.com. Take that same info (DL metal, flight numbers, routes, etc), and book through Alitalia. I saved at least $300 dollars. If you're doing it through rewards/miles, try the same thing both thru Alitalia, KLM, and AF. Much easier redemption, and they're putting you on DL metal anyway.