▁serve ▁Madrid , ▁Spain ▁effective ▁May ▁ 1 , ▁ 1 9 8 6 , ▁the ▁service ▁did ▁not ▁commence . ▁The ▁only ▁scheduled ▁trans - At l antic ▁service ▁Eastern ▁provided ▁was ▁Miami ▁to ▁London ▁G at wick , ▁comm encing ▁on ▁July ▁ 1 5 , ▁ 1 9 8 5 ▁and ▁was ▁dis cont in ued ▁in ▁ 1 9 8 6 ▁and ▁replaced ▁with ▁codes h are ▁fl ights ▁from ▁Atlanta ▁via ▁British ▁C aled onian ▁Air ways . ▁ ▁History ▁ ▁Orig ins ▁ ▁Eastern ▁Air ▁L ines ▁was ▁a ▁composite ▁of ▁ass orted ▁air ▁travel ▁corpor ations , ▁including ▁Florida ▁Air ways ▁and ▁Pit ca ir n ▁A viation . ▁In ▁the ▁late ▁ 1 9 2 0 s , ▁Pit ca ir n ▁A viation ▁won ▁a ▁contract ▁to ▁fly ▁mail ▁between ▁New ▁York ▁City ▁and ▁Atlanta , ▁Georgia ▁on ▁Mail wing ▁single - engine ▁aircraft . ▁In ▁ 1 9 2 9 , ▁Clement ▁Ke ys , ▁the ▁owner ▁of ▁North ▁American ▁A viation , ▁purchased ▁Pit ca ir n . ▁In ▁ 1 9 3 0 , ▁Ke ys ▁changed ▁the ▁company ' s ▁name ▁to ▁Eastern ▁Air ▁Transport . ▁After ▁being ▁purchased ▁by ▁General ▁Mot ors ▁and ▁experien cing ▁a ▁change ▁in ▁leadership ▁after ▁the ▁Air mail ▁Act ▁of ▁ 1 9 3 4 , ▁the ▁air line ▁became ▁known ▁as ▁Eastern ▁Air ▁L ines . ▁ ▁G row th ▁under ▁R icken back er ▁ ▁In ▁ 1 9 3 8 ▁World