Answer: airlines

AnswerCrossword Clue
AIRLINESCertain elevated routes
airlinesAn organization providing a regular public service of air transportation on one or more routes
airlinesA route that forms part of a system regularly used by aircraft
airlinesA pipe supplying air
airlinesAIRLINE, an air transportation system
AIRLINESEl Al et al.
AIRLINESSome transportation companies
AIRLINESO'Hare competitors
AIRLINESJ.F.K. tenants
AIRLINESO'Hare tenants
AIRLINESEmployers of "stews"
AIRLINESAA and Delta
AIRLINESCompanies regulated by C.A.B.
AIRLINESModern transportation systems.
AIRLINESUsers of hub-and-spoke systems
AIRLINESEl Al et at.
AIRLINESNorthwest and Southwest, e.g.
AIRLINESAmerican and the like
AIRLINESCompetitors at Logan and O'Hare
AIRLINESFliers
AIRLINESUnited and Continental