Fannie if its any help on my game the airports for the three you are looking follow are as follows
JDM - username level 22. One level 3 runway, two green and three brown hangers
Ewikaa - username level 21. Two runways - one level 3 and one 4, three blue hangers, one green and one red.
Little Angel - username level 18. Three runways - one each of levels 1,2 and 3, two blue hangers, one green and one brown
Sian and David ( level 35 )