| Zone 1(A) |
EYW FLL FMY MIA MLB PBI TPA |
| Zone 1(B) |
AGS AVL BHM BNA CAE CHA CHS CLT FLO GSO GSP HSV JAX LEX MEM MOB PNS RDU SAV SDF TLH TRI TYS |
| Zone 2(A) |
AGS AVL BHM BNA CAE CHA CHS CLT FLO GSO GSP HSV JAX LEX MEM MOB PNS RDU SAV SDF TLH TRI TYS |
| Zone 2(B) |
ABY ATL BQK CSG DHN EWN FAY GNV GPT GTR HHH ILM MCN MEI MGM MYR OAJ PFN VLD VPS |
| Zone 3 |
AZO CAK CHI CLE CMH CVG DAY DTT EVV FNT GRR IND LAN SBN TOL TVC |
| Zone 4 |
ABE AVP BWI CHO CRW HAR HTS LWB LYH ORF PHF PHL RIC ROA SCE WAS |
| Zone 5 |
ACK AIY ALB BDL BGR BOS BTV BUF EWR HAR HPN ISP MHT NYC ORF PIT PVD PWM ROC SWF SYR YHZ YMQ YOW YTO |
| Zone 6 |
AEX ATW BMI BTR CID DSM FSM FWA FYV GRB JAN LFT LIT MKC MKE MLI MLU MSN MSY PIA SGF SHV STL TUP |
| Zone 7 |
AUS DFW FSD HOU ICT LAW OKC OMA SAT TUL |