abi act ama aus azo bmi btr cid cle cll cmh cmi cos crp cvg day dbq den dfw dsm dtw elp evv fsm fwa ggg grb grr hou iah ict ile ind jan jln law lbb lit lnk lrd lse maf mci mdw mfe mke mli mqt msn msp msy nyc okc oma ord orf pah phx pia psp ric rst sat sdf sgf shv sjt slc spi sps stl tol tul tvc txk tyr uin xna
3区
alb atl bdl bhm bna bos buf bwi cha clt dca ewr eyw fll gso gsp hpn hsv iad isp jax mco mdt mem mia pbi phl pit pvd pwm rdu roc rsw swf syr tpa tys