Originally Posted by
Often1
AA is selling at <$100. As you are traveling on separate tickets and it's a micro-haul, I would not even remotely worry about which carrier you fly on the first hop if there is a material savings.
The only advantage to flying on Delta for the ATL-MIA portion is the protection they
generally offer in these situations. Also, the thru-check of baggage on DL-DL tickets vs AA-DL tickets.