The US' 10 Busiest Connecting Hubs That Sometimes Fly Under The Radar

#Boeing #Airbus #Newark Liberty International Airport #Seattle-Tacoma International Airport #Alaska Airlines #Horizon Air #Delta Air Lines #Miami International Airport #Phoenix Sky Harbor International Airport #Southwest Airlines #Houston George Bush Intercontinental Airport #Philadelphia International Airport #Salt Lake City International Airport #Minneapolis-St. Paul International Airport #Sun Country Airlines #Detroit Metropolitan Airport #Northwest Airlines #Charlotte Douglas International Airport #connecting flights #Newark Liberty International Airport