ABE   Allentown/Bethlehem, PA
ALB   Albany, NY
AVP   Wilkes-Barre/Scranton, PA
BGM   Binghamton, NY
BNA   Nashville, TN
BTV   Burlington, VT
BUF   Buffalo, NY
BWI   Baltimore, MD
CAE   Columbia, SC
CAK   Akron/Canton, OH
CHO   Charlottesville, VA
CHS   Charleston, SC
CLE   Cleveland, OH
CMH   Columbus, OH
CRW   Charleston, WV
DAY   Dayton, OH
DTW   Detroit, MI
EWR   Newark, NJ
GSO   Greensboro, NC
GSP   Greenville/Spartanburg, SC
HPN   White Plains, NY
IAD   Washington, DC
IND   Indianapolis, IN
JAX   Jacksonville, FL
JFK   New York's (JFK), NY
LGA   New York/LaGuardia
LYH   Lynchburg, VA
MDT   Harrisburg, PA
MOB   Mobile, AL
ORD   Chicago (ORD), IL
ORF   Norfolk, VA
PHF   Newport News, VA
PHL   Philadelphia, PA
PIT   Pittsburgh, PA
PMW   Portland, ME
PVD   Providence, RI
RDU   Raleigh/Durham, NC
RIC   Richmond, VA
ROA   Roanoke, VA
ROC   Rochester, NY
SAV   Savannah, GA
SCE/UNV   State College, PA
SDF   Loiusville, KY
SHD   Shenandoah Valley, VA
SWF   Stewart, NY
SYR   Syracuse, NY
TUL   Tulsa, OK
TYS   Knoxville, TN

   Fargo, ND
   Sioux Falls, SD
   Springfield, MO
   Peoria, IL