Airlines of USA hubs & focus cities

 
USA		 

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  City State Airlines
  Albuquerque NM Southwest      
  Anchorage AK Alaska Frontier F/S Pen Air  
  Atlanta GA Delta Air Tran    
  Austin TX ExpressJet Southwest
  Baltimore MD Southwest Air Tran
  Billings MT Big Sky      
  Boston MA Delta American JetBlue US Airways
  Charlotte NC US Airways      
  Chicago  O'Hare IL United American    
 Midway IL Southwest      
  Cincinnati/North Kentucky KY Delta      
  Cleveland OH Continental      
  Columbus OH Delta      
  Dallas  Dallas-Ft.Worth TX American      
 Love Field TX Southwest      
  Denver CO United Frontier Great Lakes  
  Detroit MI Northwest Spirit    
  Guam - Continental Cape Air    
  Honolulu HI Hawaiian Island Air Go!  
  Houston  George Bush TX Continental      
 Hobby TX Southwest      
  Indianapolis IN Northwest      
  Kansas City MO Midwest Southwest US Airways  
  Las Vegas NV US Airways Southwest Allegiant  
  Los Angeles
  area		  LAX CA United Delta American Southwest
 Long Beach CA JetBlue      
 Ontario CA ExpressJet      
  Louisville KY UPS      
  Memphis TN Northwest FedEx    
  Miami area  Miami FL American      
 Ft.Lauderdale FL Spirit Delta Jet Blue  
 West Palm Beach FL JetBlue      
  Milwaukee WI Midwest      
  Minneapolis-St.Paul MN Northwest Sun Country    
  Nashville TN Southwest      
  New York
  area		  JFK NY JetBlue Delta American  
 La Guardia NY US Airways American Delta  
 Newark NJ Continental      
  Orlando area  Orlando FL Air Tran Delta Southwest JetBlue
 Sanford FL Allegiant      
  Philadelphia PA US Airways Southwest    
  Phoenix AZ US Airways Southwest    
  Pittsburgh PA US Airways      
  Portland OR Alaska/Horizon      
  Raleigh-Durham NC American      
  Salt Lake City UT Delta      
  San Diego CA Southwest ExpressJet    
  San Francisco
  Bay area 		 San Francisco CA United American Alaska Virgin
 Oakland CA Southwest Jet Blue    
  San Juan, Puerto Rico - American      
  Seattle WA Alaska/Horizon      
  St Louis MO American      
  Tampa FL Delta Allegiant Southwest  
  Washington DC  Dulles VA United JetBlue    
 Reagan VA US Airways      
 
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