休斯顿HOUSTON(LAH)塔尔萨TULSA(TUL)俄克拉荷马城OKLAHOMA CITY(OKC)费城PHILADELPHIA(PHL)匹兹堡PITTSBURGH(PTH)
辛辛那提CINCINNATI(MCI)克利夫兰CLEVELAND(CLE)哥伦布COLUMBUS(CMH)堪萨斯城KANSAS CITY(MCI)杰克逊威尔JACKSONVILLE(JAX)费尼克斯PHOENIX(PHX)达拉斯DALLAS(DFW)奥马哈OMAHA(CMA)明利阿波利斯MINNEAPOLIS(MSP)圣路易斯SAINT LIUIS(STL)孟菲斯MEMPHIS(MEM)
休斯顿HOUSTON(LAH)塔尔萨TULSA(TUL)俄克拉荷马城OKLAHOMA CITY(OKC)费城PHILADELPHIA(PHL)匹兹堡PITTSBURGH(PTH)
辛辛那提CINCINNATI(MCI)克利夫兰CLEVELAND(CLE)哥伦布COLUMBUS(CMH)堪萨斯城KANSAS CITY(MCI)杰克逊威尔JACKSONVILLE(JAX)费尼克斯PHOENIX(PHX)达拉斯DALLAS(DFW)奥马哈OMAHA(CMA)明利阿波利斯MINNEAPOLIS(MSP)圣路易斯SAINT LIUIS(STL)孟菲斯MEMPHIS(MEM)