I saw Battle of Britain and Tora Tora Tora (tora tora was great), I still need to see Blue Max and Firefox. I also have being waiting for the Red Baron to come out (it says "in theatres April" :S), I saw Flyboys lol.
There is Red Tails coming out in 2010, and I just noticed that there a movie about the Tuskegee Airmen already titled "Tuskegee Airmen" odd
(came out 1995, just found it on youtube too, popcorn ready hehe)
Weird as it may be, the first aerial combat movie I saw was Independence Day lol (poor old man, his missile jammed)