#1. Airports near Thornton, CO Denver International Airport (DEN) 15 miles Weekly Flights: 4,538 Domestic Routes: 162 Delayed Flights: 19% Average Delay (hr): 1
#2. Airports near Thornton, CO City of Colorado Springs Municipal Airport (COS) 78 miles Weekly Flights: 199 Domestic Routes: 17 Delayed Flights: 18% Average Delay (hr): 1½
#3. Airports near Thornton, CO Cheyenne Regional Airport-Jerry Olson Field (CYS) 86 miles Weekly Flights: 1 Domestic Routes: 1 Delayed Flights: 18% Average Delay (hr): 1
#4. Airports near Thornton, CO Laramie Regional Airport (LAR) 104 miles Weekly Flights: 12 Domestic Routes: 1 Delayed Flights: 11% Average Delay (hr): 2¼
#5. Airports near Thornton, CO Eagle County Regional Airport (EGE) 106 miles Weekly Flights: 41 Domestic Routes: 14 Delayed Flights: 20% Average Delay (hr): 2¼
#6. Airports near Thornton, CO Aspen-Pitkin County Airport-Sardy Field (ASE) 113 miles Weekly Flights: 132 Domestic Routes: 10 Delayed Flights: 21% Average Delay (hr): 1¾
#7. Airports near Thornton, CO Pueblo Memorial Airport (PUB) 115 miles Weekly Flights: 17 Domestic Routes: 2 Delayed Flights: 12% Average Delay (hr): 2¼
#8. Airports near Thornton, CO Yampa Valley Airport (HDN) 126 miles Weekly Flights: 18 Domestic Routes: 14 Delayed Flights: 17% Average Delay (hr): 1¾
#9. Airports near Thornton, CO Gunnison-Crested Butte Regional Airport (GUC) 143 miles Weekly Flights: 4 Domestic Routes: 2 Delayed Flights: 16% Average Delay (hr): 1¾
#10. Airports near Thornton, CO Western Nebraska Regional Airport-William B Heilig Field (BFF) 152 miles Weekly Flights: 11 Domestic Routes: 1 Delayed Flights: 9% Average Delay (hr): 1¾
#11. Airports near Thornton, CO Montrose Regional Airport (MTJ) 186 miles Weekly Flights: 29 Domestic Routes: 12 Delayed Flights: 19% Average Delay (hr): 1¼
#12. Airports near Thornton, CO Grand Junction Regional Airport (GJT) 199 miles Weekly Flights: 72 Domestic Routes: 9 Delayed Flights: 9% Average Delay (hr): 1½
#13. Airports near Thornton, CO Casper-Natrona County International Airport (CPR) 221 miles Weekly Flights: 19 Domestic Routes: 4 Delayed Flights: 6% Average Delay (hr): 2
#14. Airports near Thornton, CO North Platte Regional Airport-Lee Bird Field (LBF) 239 miles Weekly Flights: 11 Domestic Routes: 1 Delayed Flights: 6% Average Delay (hr): 1½
#15. Airports near Thornton, CO Vernal Regional Airport (VEL) 244 miles Weekly Flights: 6 Domestic Routes: 1 Delayed Flights: 13% Average Delay (hr): 1½
#16. Airports near Thornton, CO Durango-La Plata County Airport (DRO) 244 miles Weekly Flights: 60 Domestic Routes: 4 Delayed Flights: 17% Average Delay (hr): 1½
#17. Airports near Thornton, CO Southwest Wyoming Regional Airport (RKS) 245 miles Weekly Flights: 13 Domestic Routes: 1 Delayed Flights: 9% Average Delay (hr): 2¼
#18. Airports near Thornton, CO Garden City Regional Airport (GCK) 265 miles Weekly Flights: 14 Domestic Routes: 1 Delayed Flights: 14% Average Delay (hr): 1¼
#19. Airports near Thornton, CO Canyonlands Field (CNY) 269 miles Weekly Flights: 8 Domestic Routes: 1 Delayed Flights: 14% Average Delay (hr): 1¼
#20. Airports near Thornton, CO Liberal Mid-America Regional Airport (LBL) 293 miles Weekly Flights: 11 Domestic Routes: 2 Delayed Flights: 10% Average Delay (hr): 2¼