| Flughafenkürzel |
Stadt / Flughafen |
| MDW |
Chicago, IL - Chicago Midway Airport |
| ORD |
Chicago, IL - Chicago-O'Hare International Airport |
| CGX |
Chicago, IL - Merrill C. Meigs Airport |
| CHI |
Chicago, IL - Metropolitan Area |
| AUZ |
Chicago/Aurora, IL - Aurora Municipal Airport |
| PWK |
Chicago/Prospect Heights/Wheeling, IL - Palwaukee Municipal Airport |
| JMH |
Chicago/Schaumburg, IL - Schaumburg Air Park |
| UGN |
Chicago/Waukegan, IL - Waukegan Regional Airport |
| CHK |
Chickasha, OK - Chickasha Municipal Airport |
| CKX |
Chicken, AK - Chicken Airport |
| CIC |
Chico, CA - Chico Municipal Airport |
| KCQ |
Chignik, AK - Chignik Airport |
| KBW |
Chignik, AK - Chignik Bay Seaplane Base |
| KCG |
Chignik, AK - Chignik Fisheries Airport |
| KCL |
Chignik, AK - Chignik Lagoon Airport |
| CDS |
Childress, TX - Childress Municipal Airport |
| RZT |
Chillicothe, OH - Ross County Airport |
| CHZ |
Chiloquin, OR - Chiloquin State Airport |
| NID |
China Lake, CA - China Lake NAWS/Armitage Field |
| WAL |
Chincoteague, VA |
| CNO |
Chino, CA - Chino Airport |
| CZN |
Chisana, AK - Chisana Airport |
| CZO |
Chistochina, AK - Chistochina Airport |
| CXC |
Chitina, AK - Chitina Airport |
| CIV |
Chomley, AK |
| CHU |
Chuathbaluk, AK - Chuathbaluk Airport |
| LUK |
Cincinnati, OH - Cincinnati Municipal Airport/Lunken Field |
| ISZ |
Cincinnati, OH - Cincinnati-Blue Ash Airport |
| CHP |
Circle Hot Springs, AK - Circle Hot Springs Airport |
| IRC |
Circle, AK - Circle City Airport |
| CNH |
Claremont, NH - Claremont Municipal Airport |
| ICL |
Clarinda, IA - Schenck Field |
| CLP |
Clarks Point, AK - Clarks Point Airport |
| CKB |
Clarksburg, WV - Benedum Airport |
| CKM |
Clarksdale, MS - Fletcher Field |
| CKV |
Clarksville, TN - Outlaw Field |
| CYW |
Clay Center, KS - Clay Center Municipal Airport |
| CAO |
Clayton, NM - Clayton Municipal Airpark |
| CKE |
Clear Lake, AK |
| CLC |
Clear Lake/Lavon, TX - Lavon North Airport |
| CLW |
Clearwater, FL - Clearwater Air Park |
| CEU |
Clemson, SC - Clemson-Oconee County Airport |
| RNV |
Cleveland, MS - Cleveland Municipal Airport |
| BKL |
Cleveland, OH - Burke Lakefront Airport |
| CLE |
Cleveland, OH - Cleveland-Hopkins International Airport |
| CGF |
Cleveland, OH - Cuyahoga County Airport |
| HDI |
Cleveland, TN - Hardwick Field |
| CFT |
Clifton/Morenci, AZ - Greenlee County Airport |
| CWI |
Clinton, IA - Clinton Municipal Airport |
| CTZ |
Clinton, NC - Sampson County Airport |