#21. Airports near ZIP Code 59631, MT Casper-Natrona County International Airport (CPR) 377 miles Weekly Flights: 19 Domestic Routes: 4 Delayed Flights: 6% Average Delay (hr): 2
#22. Airports near ZIP Code 59631, MT Salt Lake City International Airport (SLC) 383 miles Weekly Flights: 2,174 Domestic Routes: 94 Delayed Flights: 13% Average Delay (hr): 1
#23. Airports near ZIP Code 59631, MT Elko Regional Airport (EKO) 415 miles Weekly Flights: 12 Domestic Routes: 1 Delayed Flights: 5% Average Delay (hr): 2
#24. Airports near ZIP Code 59631, MT Provo Municipal Airport (PVU) 423 miles Weekly Flights: 11 Domestic Routes: 5 Delayed Flights: 21% Average Delay (hr): 1½
#25. Airports near ZIP Code 59631, MT Vernal Regional Airport (VEL) 432 miles Weekly Flights: 6 Domestic Routes: 1 Delayed Flights: 13% Average Delay (hr): 1½
#26. Airports near ZIP Code 59631, MT Roberts Field (RDM) 447 miles Weekly Flights: 73 Domestic Routes: 7 Delayed Flights: 17% Average Delay (hr): 1½
#27. Airports near ZIP Code 59631, MT Seattle-Tacoma International Airport (SEA) 472 miles Weekly Flights: 2,692 Domestic Routes: 82 Delayed Flights: 16% Average Delay (hr): 1
#28. Airports near ZIP Code 59631, MT Yampa Valley Airport (HDN) 481 miles Weekly Flights: 18 Domestic Routes: 14 Delayed Flights: 17% Average Delay (hr): 1¾
#29. Airports near ZIP Code 59631, MT Rapid City Regional Airport (RAP) 483 miles Weekly Flights: 82 Domestic Routes: 11 Delayed Flights: 17% Average Delay (hr): 1½
#30. Airports near ZIP Code 59631, MT Laramie Regional Airport (LAR) 483 miles Weekly Flights: 12 Domestic Routes: 1 Delayed Flights: 11% Average Delay (hr): 2¼
#31. Airports near ZIP Code 59631, MT Portland International Airport (PDX) 490 miles Weekly Flights: 1,213 Domestic Routes: 56 Delayed Flights: 13% Average Delay (hr): 1
#32. Airports near ZIP Code 59631, MT Bellingham International Airport (BLI) 500 miles Weekly Flights: 43 Domestic Routes: 11 Delayed Flights: 10% Average Delay (hr): 1¼
#33. Airports near ZIP Code 59631, MT Cheyenne Regional Airport-Jerry Olson Field (CYS) 521 miles Weekly Flights: 1 Domestic Routes: 1 Delayed Flights: 18% Average Delay (hr): 1
#34. Airports near ZIP Code 59631, MT Western Nebraska Regional Airport-William B Heilig Field (BFF) 535 miles Weekly Flights: 11 Domestic Routes: 1 Delayed Flights: 9% Average Delay (hr): 1¾
#35. Airports near ZIP Code 59631, MT Grand Junction Regional Airport (GJT) 535 miles Weekly Flights: 72 Domestic Routes: 9 Delayed Flights: 9% Average Delay (hr): 1½
#36. Airports near ZIP Code 59631, MT Eagle County Regional Airport (EGE) 539 miles Weekly Flights: 41 Domestic Routes: 14 Delayed Flights: 20% Average Delay (hr): 2¼
#37. Airports near ZIP Code 59631, MT Minot International Airport (MOT) 539 miles Weekly Flights: 49 Domestic Routes: 5 Delayed Flights: 13% Average Delay (hr): 1¾
#38. Airports near ZIP Code 59631, MT Canyonlands Field (CNY) 540 miles Weekly Flights: 8 Domestic Routes: 1 Delayed Flights: 14% Average Delay (hr): 1¼
#39. Airports near ZIP Code 59631, MT Mahlon Sweet Field (EUG) 545 miles Weekly Flights: 79 Domestic Routes: 10 Delayed Flights: 18% Average Delay (hr): 1¼
#40. Airports near ZIP Code 59631, MT Bismarck Municipal Airport (BIS) 556 miles Weekly Flights: 71 Domestic Routes: 9 Delayed Flights: 15% Average Delay (hr): 1½