| Valid for |
ALO (Waterloo Regional Airport, Waterloo, United States)
ATW (Appleton International Airport, Appleton, United States)
AZO (Kalamazoo Battle Creek International Airport, Kalamazoo, United States)
BMI (Central Illinois Regional Airport at Bloomington-Normal, Bloomington, United States)
CAK (Akron Canton Regional Airport, Akron, United States)
CID (The Eastern Iowa Airport, Cedar Rapids, United States)
CLE (Cleveland Hopkins International Airport, Cleveland, United States)
CMH (John Glenn Columbus International Airport, Columbus, United States)
CMI (University of Illinois Willard Airport, Champaign, United States)
COU (Columbia Regional Airport, Columbia, United States)
CWA (Central Wisconsin Airport, Wassau, United States)
DAY (James M Cox Dayton International Airport, Dayton, United States)
DFW (Dallas Fort Worth International Airport, Dallas-Fort Worth, United States)
DSM (Des Moines International Airport, Des Moines, United States)
DTW (Detroit Metropolitan Wayne County Airport, Detroit, United States)
EVV (Evansville Regional Airport, Evansville, United States)
FNT (Bishop International Airport, Flint, United States)
FSM (Fort Smith Regional Airport, Fort Smith, United States)
FWA (Fort Wayne International Airport, Fort Wayne, United States)
GCK (Garden City Regional Airport, Garden City, United States)
GRB (Austin Straubel International Airport, Green Bay, United States)
GRI (Central Nebraska Regional Airport, Grand Island, United States)
GRR (Gerald R. Ford International Airport, Grand Rapids, United States)
ICT (Wichita Eisenhower National Airport, Wichita, United States)
IND (Indianapolis International Airport, Indianapolis, United States)
LAN (Capital City Airport, Lansing, United States)
LAW (Lawton Fort Sill Regional Airport, Lawton, United States)
LIT (Bill & Hillary Clinton National Airport/Adams Field, Little Rock, United States)
MCI (Kansas City International Airport, Kansas City, United States)
MHK (Manhattan Regional Airport, Manhattan, United States)
MLI (Quad City International Airport, Moline, United States)
MKE (General Mitchell International Airport, Milwaukee, United States)
MQT (Sawyer International Airport, Gwinn, United States)
MSN (Dane County Regional Truax Field, Madison, United States)
OKC (Will Rogers World Airport, Oklahoma City, United States)
OMA (Eppley Airfield, Omaha, United States)
ORD (Chicago O Hare International Airport, Chicago, United States)
PIA (General Wayne A. Downing Peoria International Airport, Peoria, United States)
SBN (South Bend Regional Airport, South Bend, United States)
SGF (Springfield Branson National Airport, Springfield, United States)
SPI (Abraham Lincoln Capital Airport, Springfield, United States)
STL (St Louis Lambert International Airport, St. Louis, United States)
SWO (Stillwater Regional Airport, Stillwater, United States)
TUL (Tulsa International Airport, Tulsa, United States)
TVC (Cherry Capital Airport, Traverse City, United States)
TXK (Texarkana Regional Webb Field, Texarkana, United States)
XNA (Northwest Arkansas Regional Airport, Bentonville, United States)
YUL (Montreal / Pierre Elliott Trudeau International Airport, Montreal, Canada)
YYZ (Lester B. Pearson International Airport, Toronto, Canada)
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SBO