Thanks for the news - it will be nice to have a Delta mainline flight to the Keys. Now Delta needs to get realistic on its pricing for Key West flights. Often the flights originating in EYW are more than double those originating in MIA where both itineraries have Atlanta connections. Competition from Airtran is a good thing!
I miss the EYW-MCO flights on DL. Four flights a week on Airtran isn't enough for business travelers to make much use of it.