Arizona
     PHX . . . Phoenix Sky Harbor International Airport - Phoenix
     TUS . . . Tucson International Airport - Tucson

Colorado
     DEN . . . Denver International Airport - Denver
     MTJ . . . Montrose Regional Airport - Montrose
     TEX . . . Telluride Regional Airport - Telluride

Idaho
     BOI . . . Boise Air Terminal / Gowen Field Airport - Boise
     LWS . . . Lewiston-Nez Perce County Regional Airport - Lewiston

Montana
     . . . Billings Logan International Airport - Billings
     MSO . . . Missoula International Airport - Missoula

New Mexico
     ABQ . . . Albuquerque International Sunport - Albuquerque

Utah
     CDC . . . Cedar City Regional Airport - Cedar City

Wyoming
     CYS . . . Cheyenne Airport - Cheyenne
     GCC . . . Gillette-Campbell County Airport - Gillette
     LAR . . . Laramie Regional Airport - Laramie

Alabama
     BHM . . . Birmingham International Airport - Birmingham
     HSV . . . Huntsville International Airport - Huntsville
     MOB . . . Mobile Regional Airport - Mobile
     MGM . . . Montgomery Regional Airport - Montgomery

Arkansas
     XNA . . . Northwest Arkansas Regional Airport - Fayetteville
     FSM . . . Fort Smith Regional Airport - Fort Smith
     LIT . . . Little Rock National Airport - Little Rock
     TXK . . . Texarkana Regional Airport - Texarkana

Illinois
     BLV . . . MidAmerica Airport - Belleville
     BMI . . . Central Illionis Regional Airport - Bloomington
     CMI . . . Willard Airport - Champaign
     ORD . . . Chicago O'Hare International Airport - Chicago
     MDW . . . Chicago Midway Airport - Chicago
     DEC . . . Decatur Airport - Decatur
     MLI . . . Quad City International Airport - Moline
     PIA . . . Greater Peoria Regional Airport - Peoria
     RFD . . . Greater Rockford Airport - Rockford
     SPI . . . Capital Airport - Springfield

Iowa
     BRL . . . Southeast Iowa Regional Airport - Burlington
     CID . . . The Eastern Iowa Airport - Cedar Rapids
     DSM . . . Des Moines International Airport - Des Moines

Kansas
     MHK . . . Manhattan Regional Airport - Manhattan
     SLN . . . Salina Municipal Airport - Salina
     ICT . . . Wichita Mid-Continent Airport - Wichita

Louisiana
     AEX . . . Alexandria International Airport - Alexandria
     BTR . . . Baton Rouge Metropolitan Airport - Baton Rouge
     MSY . . . New Orleans International Airport - New Orleans

Minnesota
     BJI . . . Bemidji-Beltrami County Airport - Bemidji
     MSP . . . Minneapolis/St. Paul International Airport - Saint Paul

Mississippi
     GTR . . . Golden Triangle Regional Airport - Columbus
     GPT . . . Gulfport-Biloxi Regional Airport - Gulfport
     PIB . . . Hattiesburg - Laurel Regional Airport - Hattiesburg
     JAN . . . Jackson International Airport - Jackson

Missouri
     JLN . . . Joplin Regional Airport - Joplin
     MCI . . . Kansas City International Airport - Kansas City
     STL . . . Lambert - St. Louis International Airport - Saint Louis
     SGF . . . Springfield-Branson Regional Airport - Springfield

Nebraska
     OMA . . . Eppley Airfield Airport - Omaha

North Dakota
     BIS . . . Bismarck Municipal Airport - Bismarck
     FAR . . . Hector International Airport - Fargo
     GFK . . . Grand Forks International Airport - Grand Forks
     MOT . . . Minot International Airport - Minot

Oklahoma
     LAW . . . Lawton-Fort Sill Regional Airport - Lawton
     OKC . . . Will Rogers World Airport - Oklahoma City
     TUL . . . Tulsa International Airport - Tulsa

South Dakota
     RAP . . . Rapid City Regional Airport - Rapid City
     FSD . . . Sioux Falls Regional Airport - Sioux Falls

Tennessee
     TRI . . . Tri City Regional Airport - Blountville
     CHA . . . Chattanooga Metropolitan Airport - Chattanooga
     MKL . . . McKellar-Sipes Regional Airport - Jackson
     TYS . . . McGhee Tyson Airport - Knoxville
     MEM . . . Memphis International Airport - Memphis
     BNA . . . Nashville International Airport - Nashville

Texas
     BSM . . . Austin-Bergstrom International Airport - Austin
     DFW . . . Dallas/Fort Worth International Airport - Dallas/Fort Worth
     FTW . . . Fort Worth Meacham International Airport - Fort Worth
     HRL . . . Rio Grande Valley International Airport - Harlingen
     IAH . . . George Bush Intercontinental Airport - Houston
     HOU . . . William P. Hobby Airport - Houston
     ILS . . . Killeen Municipal Airport - Killeen
     LBB . . . Lubbock International Airport - Lubbock
     MFE . . . McAllen Miller International Airport - McAllen
     SAT . . . San Antonio International Airport - San Antonio

Wisconsin
     MSN . . . Dane County Regional Airport - Madison
     MKE . . . General Mitchell International Airport - Milwaukee
     CWA . . . Central Wisconsin Airport - Mosinee
     RHI . . . Rhinelander/Oneida County Airport - Rhinelander
 

Connecticut
     HVN . . . Tweed New Haven Airport - New Haven
     BDL . . . Bradley International Airport - Windsor Locks

Delaware
     ILG . . . New Castle County Airport - Wilmington

District of Columbia
     IAD . . . Washington Dulles International Airport - Washington
     DCA . . . Ronald Reagan Washington National Airport - Washington

Florida
     PIE . . . St. Peterburg-Clearwater International Airport - Clearwater
     DAB . . . Daytona Beach International Airport - Daytona Beach
     FLL . . . Fort Lauderdale Hollywood International Airport - Fort Lauderdale
     RSW . . . Southwest Florida International Airport - Fort Myers
     JAX . . . Jacksonville International Airport - Jacksonville
     LAL . . . Lakeland Linder Regional Airport - Lakeland
     MLB . . . Melbourne International Airport - Melbourne
     MIA . . . Miami International Airport - Miami
     APF . . . Naples Municipal Airport - Naples
     SFB . . . Orlando Sanford Airport - Orlando
     MCO . . . Orlando International Airport - Orlando
     PFN . . . Panama City Bay County International Airport - Panama City
     PNS . . . Pensacola Regional Airport - Pensacola
     SRQ . . . Sarasota/Bradenton International Airport - Sarasota
     TLH . . . Tallahassee Regional Airport - Tallahassee
     TPA . . . Tampa International Airport - Tampa
     PBI . . . Palm Beach International Airport - West Palm Beach

Georgia
     ATL . . . Hartsfield International Airport - Atlanta
     SAV . . . Savannah International Airport - Savannah

Indiana
     EVV . . . Evansville Regional Airport - Evansville
     FWA . . . Fort Wayne International Airport - Fort Wayne
     IND . . . Indianapolis International Airport - Indianapolis
     SBN . . . Michiana Regional Transportation Center Airport - South Bend
     HUF . . . Hulman Regional Airport - Terre Haute

Kentucky
     CVG . . . Cincinnati/Northern Kentucky International Airport - Covington
     LEX . . . Blue Grass Airport - Lexington
     SDF . . . Louisville International Airport - Louisville
     OWB . . . Owensboro - Daviess County Regional Airport - Owensboro
     PAH . . . Barkley Regional Airport - Paducah

Maine
     BGR . . . Bangor International Airport - Bangor
     PWM.....Portland International Airport - Portland

Maryland
     BWI . . . Baltimore/Washington International Airport - Baltimore
     HGR . . . Washington County Regional Airport - Hagerstown

Massachusetts
     BOS . . . Logan International Airport - Boston
     ACK . . . Nantucket Memorial Airport - Nantucket
     ORH . . . Worcester Regional Airport - Worcester

Michigan
     DTW . . . Detroit Metropolitan Airport - Detroit
     FNT . . . Bishop International Airport - Flint
     GRR . . . Kent County International Airport - Grand Rapids
     AZO . . . Kalamazoo-Battle Creek International Airport - Kalamazoo
     MKG . . . Muskegon County Airport - Muskegon
     MBS . . . MBS International Airport - Saginaw
     TVC . . . Cherry Capital Airport - Traverse City

New Hampshire
     LEB . . . Lebanon Municipal Airport - Lebanon
     MHT . . . Manchester Airport - Manchester

New Jersey
     ACY . . . Atlantic City International Airport - Atlantic City
     EWR . . . Newark International Airport - Newark

New York
     ALB . . . Albany International Airport - Albany
     BGM . . . Binghamton Regional Airport - Binghamton
     BUF . . . Buffalo Niagara International Airport - Buffalo
     ELM . . . Elmira Corning Regional Airport - Elmira
     ITH . . . Tompkins County Airport - Ithaca
     JFK . . . John F. Kennedy International Airport - New York
     LGA . . . La Guardia Airport - New York
     ROC . . . Greater Rochester International Airport - Rochester
     SYR . . . Syracuse Hancock International Airport - Syracuse
     HPN . . . Westchester County Airport - White Plains

North Carolina
     CLT . . . Charlotte/Douglas International Airport - Charlotte
     RWI . . . Rocky Mount - Wilson Regional Airport - Elm City
     HKY . . . Hickory Regional Airport - Hickory
     RDU . . . Raleigh-Durham International Airport - RDU Airport
     OAJ . . . Albert J. Ellis Airport - Richlands
     ILM . . . New Hanover International Airport - Wilmington

Ohio
     CAK . . . Akron-Canton Regional Airport - Akron
     CMH . . . Port Columbus International Airport - Columbus

Pennsylvania
     ABE . . . Lehigh Valley International Airport - Allentown
     AVP . . . Wilkes-Barre/Scranton International Airport - Avoca
     ERI . . . Erie International Airport - Erie
     MDT . . . Harrisburg International Airport - Harrisburg
     PHL . . . Philadelphia International Airport - Philadelphia
     RDG . . . Reading Regional Airport - Reading

Rhode Island
     PVD . . . Theodore Francis Green State Airport - Providence

South Carolina
     GSP . . . Greenville Spartanburg International Airport - Greer

Virginia
     CHO . . . Charlottesville Albemarle Airport - Charlottesville
     PHF . . . Newport News-Williamsburg International Airport - Newport News
     ORF . . . Norfolk International Airport - Norfolk
     RIC . . . Richmond International Airport - Richmond
     ROA . . . Roanoke Regional Airport - Roanoke
     SHD . . . Shenandoah Valley Regional Airport - Weyers Cave

West Virginia
     CRW . . . Yeager Airport - Charleston
     HTS . . . Tri-State Airport - Huntington