The flight time to DeKalb from Great Falls is 2 hours 17 minutes . This is approximate direct flying time, and include average plane speed 510 miles per hour. Total flight distance between Great Falls, MT and DeKalb, IL is about one thousand, one hundred and sixty-seven miles or one thousand, eight hundred and seventy-eight km. Real time can be different, and depends on the time of day, the type of aircraft, and can be significantly longer if there are transplants during the flight.
Flying time is about 2 hours 17 minutes
Select arrival and departure cities, current are Great Falls, MT and IL
This flight will take about two hours seventeen minutes ;
You can buy ticket to plane or drive by car, check ; distance in miles between Great Falls and DeKalb
| Aircraft | Cruising speed | Time |
| Average | 510 mph | 2 hr 17 min |
| Boeing 737 | 515 mph | 2 hr 15 min |
| Boeing 777 | 554 mph | 2 hr 6 min |
| Airbus | 515 mph | 2 hr 15 min |
Dont forget to include time in airport before and after flight.
| Country | USA |
| State | Montana |
| City | Great Falls, MT |
| Latitude | 47.50024 |
| Longitude | -111.30081 |
| Country | USA |
| State | Illinois |
| City | DeKalb, IL |
| Latitude | 41.92947 |
| Longitude | -88.75036 |
Please note: current air time calculator show approximate distance and time between cities Great Falls, MT and DeKalb, IL. This values can be different if you flight from airports in this cities. To calculate exact time can be shown only when you buy ticket to the plane. We do not guarantee that there is an airline that connects city Great Falls and DeKalb. To find out if there is such a flight use the ticket purchase service.