#21. Airports near Ontario, OR Salt Lake City International Airport (SLC) 339 miles Weekly Flights: 2,174 Domestic Routes: 94 Delayed Flights: 13% Average Delay (hr): 1
#22. Airports near Ontario, OR Reno-Tahoe International Airport (RNO) 344 miles Weekly Flights: 348 Domestic Routes: 22 Delayed Flights: 18% Average Delay (hr): 1
#23. Airports near Ontario, OR Seattle-Tacoma International Airport (SEA) 349 miles Weekly Flights: 2,692 Domestic Routes: 82 Delayed Flights: 16% Average Delay (hr): 1
#24. Airports near Ontario, OR Great Falls International Airport (GTF) 360 miles Weekly Flights: 36 Domestic Routes: 8 Delayed Flights: 10% Average Delay (hr): 1¾
#25. Airports near Ontario, OR Redding Municipal Airport (RDD) 364 miles Weekly Flights: 22 Domestic Routes: 1 Delayed Flights: 22% Average Delay (hr): 1½
#26. Airports near Ontario, OR Southwest Oregon Regional Airport (OTH) 365 miles Weekly Flights: 7 Domestic Routes: 2 Delayed Flights: 35% Average Delay (hr): 1½
#27. Airports near Ontario, OR Provo Municipal Airport (PVU) 376 miles Weekly Flights: 11 Domestic Routes: 5 Delayed Flights: 21% Average Delay (hr): 1½
#28. Airports near Ontario, OR Yellowstone Regional Airport (COD) 395 miles Weekly Flights: 16 Domestic Routes: 2 Delayed Flights: 10% Average Delay (hr): 2¼
#29. Airports near Ontario, OR California Redwood Coast-Humboldt County Airport (ACV) 420 miles Weekly Flights: 28 Domestic Routes: 2 Delayed Flights: 21% Average Delay (hr): 1½
#30. Airports near Ontario, OR Bellingham International Airport (BLI) 422 miles Weekly Flights: 43 Domestic Routes: 11 Delayed Flights: 10% Average Delay (hr): 1¼
#31. Airports near Ontario, OR Billings Logan International Airport (BIL) 430 miles Weekly Flights: 80 Domestic Routes: 11 Delayed Flights: 11% Average Delay (hr): 1½
#32. Airports near Ontario, OR Southwest Wyoming Regional Airport (RKS) 435 miles Weekly Flights: 13 Domestic Routes: 1 Delayed Flights: 9% Average Delay (hr): 2¼
#33. Airports near Ontario, OR Sacramento International Airport (SMF) 439 miles Weekly Flights: 906 Domestic Routes: 36 Delayed Flights: 15% Average Delay (hr): 1
#34. Airports near Ontario, OR Mammoth Yosemite Airport (MMH) 453 miles Weekly Flights: 3 Domestic Routes: 3 Delayed Flights: 33% Average Delay (hr): 2
#35. Airports near Ontario, OR Vernal Regional Airport (VEL) 455 miles Weekly Flights: 6 Domestic Routes: 1 Delayed Flights: 13% Average Delay (hr): 1½
#36. Airports near Ontario, OR Stockton Metropolitan Airport (SCK) 478 miles Weekly Flights: 14 Domestic Routes: 3 Delayed Flights: 40% Average Delay (hr): 1
#37. Airports near Ontario, OR Cedar City Regional Airport (CDC) 482 miles Weekly Flights: 12 Domestic Routes: 1 Delayed Flights: 10% Average Delay (hr): 1
#38. Airports near Ontario, OR Charles M Schulz-Sonoma County Airport (STS) 487 miles Weekly Flights: 29 Domestic Routes: 4 Delayed Flights: 17% Average Delay (hr): 1¾
#39. Airports near Ontario, OR Metropolitan Oakland International Airport (OAK) 514 miles Weekly Flights: 1,013 Domestic Routes: 51 Delayed Flights: 19% Average Delay (hr): ¾
#40. Airports near Ontario, OR St George Regional Airport (SGU) 516 miles Weekly Flights: 62 Domestic Routes: 5 Delayed Flights: 8% Average Delay (hr): 1¼