None. If you have Sky Miles, you must be enrolled with Delta's frequent flier program. American Airlines frequent flier program is called AAdvantage. If you are a member of AAdvantage and want to know how many AAdvantage miles you have, call 1-800-433-7300, or sign in to your account online.
American Airlines AAdvantage is a customer loyalty program where you earn miles that are similar to delta sky miles by flying with American Airlines.
No, they are both Star Alliance partners.
Phoenix Airport traffics a huge amount of planes from different airlines. A few of the major airlines trafficked there are Delta Air Lines, United Airlines, and American Airlines.
Blue Sky Airlines was created in 2003.
Silver Sky Airlines was created in 2006.
Sky Capital Airlines was created in 2009.
Blue Sky Airlines ended in 2008.
Thai Sky Airlines ended in 2006.
Thai Sky Airlines was created in 2004.
Sky Work Airlines was created in 1983.
Russian Sky Airlines was created in 2004.
Silver Sky Airlines ended in 2008.