#21. Airports near ZIP Code 57521, SD Grand Forks International Airport (GFK) 346 miles Weekly Flights: 40 Domestic Routes: 4 Delayed Flights: 12% Average Delay (hr): 1½
#22. Airports near ZIP Code 57521, SD Hays Regional Airport (HYS) 357 miles Weekly Flights: 21 Domestic Routes: 2 Delayed Flights: 16% Average Delay (hr): 2
#23. Airports near ZIP Code 57521, SD St. Cloud Regional Airport (STC) 371 miles Weekly Flights: 3 Domestic Routes: 2 Delayed Flights: 25% Average Delay (hr): 1¼
#24. Airports near ZIP Code 57521, SD Yampa Valley Airport (HDN) 384 miles Weekly Flights: 18 Domestic Routes: 14 Delayed Flights: 17% Average Delay (hr): 1¾
#25. Airports near ZIP Code 57521, SD Billings Logan International Airport (BIL) 386 miles Weekly Flights: 80 Domestic Routes: 11 Delayed Flights: 11% Average Delay (hr): 1½
#26. Airports near ZIP Code 57521, SD Brainerd Lakes Regional Airport (BRD) 389 miles Weekly Flights: 12 Domestic Routes: 1 Delayed Flights: 10% Average Delay (hr): 2
#27. Airports near ZIP Code 57521, SD City of Colorado Springs Municipal Airport (COS) 390 miles Weekly Flights: 199 Domestic Routes: 17 Delayed Flights: 18% Average Delay (hr): 1½
#28. Airports near ZIP Code 57521, SD Yellowstone Regional Airport (COD) 391 miles Weekly Flights: 16 Domestic Routes: 2 Delayed Flights: 10% Average Delay (hr): 2¼
#29. Airports near ZIP Code 57521, SD Salina Regional Airport (SLN) 392 miles Weekly Flights: 13 Domestic Routes: 2 Delayed Flights: 20% Average Delay (hr): 2¼
#30. Airports near ZIP Code 57521, SD Bemidji Regional Airport (BJI) 396 miles Weekly Flights: 14 Domestic Routes: 1 Delayed Flights: 10% Average Delay (hr): 1¾
#31. Airports near ZIP Code 57521, SD Manhattan Regional Airport (MHK) 398 miles Weekly Flights: 35 Domestic Routes: 2 Delayed Flights: 16% Average Delay (hr): 1½
#32. Airports near ZIP Code 57521, SD Minneapolis-St Paul International-Wold-Chamberlain Airport (MSP) 401 miles Weekly Flights: 3,065 Domestic Routes: 132 Delayed Flights: 14% Average Delay (hr): 1¼
#33. Airports near ZIP Code 57521, SD Garden City Regional Airport (GCK) 406 miles Weekly Flights: 14 Domestic Routes: 1 Delayed Flights: 14% Average Delay (hr): 1¼
#34. Airports near ZIP Code 57521, SD Eagle County Regional Airport (EGE) 411 miles Weekly Flights: 41 Domestic Routes: 14 Delayed Flights: 20% Average Delay (hr): 2¼
#35. Airports near ZIP Code 57521, SD Des Moines International Airport (DSM) 413 miles Weekly Flights: 300 Domestic Routes: 26 Delayed Flights: 15% Average Delay (hr): 1¼
#36. Airports near ZIP Code 57521, SD Pueblo Memorial Airport (PUB) 417 miles Weekly Flights: 17 Domestic Routes: 2 Delayed Flights: 12% Average Delay (hr): 2¼
#37. Airports near ZIP Code 57521, SD Southwest Wyoming Regional Airport (RKS) 427 miles Weekly Flights: 13 Domestic Routes: 1 Delayed Flights: 9% Average Delay (hr): 2¼
#38. Airports near ZIP Code 57521, SD Aspen-Pitkin County Airport-Sardy Field (ASE) 431 miles Weekly Flights: 132 Domestic Routes: 10 Delayed Flights: 21% Average Delay (hr): 1¾
#39. Airports near ZIP Code 57521, SD Rochester International Airport (RST) 433 miles Weekly Flights: 63 Domestic Routes: 3 Delayed Flights: 17% Average Delay (hr): 1½
#40. Airports near ZIP Code 57521, SD Waterloo Regional Airport (ALO) 451 miles Weekly Flights: 13 Domestic Routes: 1 Delayed Flights: 17% Average Delay (hr): 1¼