The flight time to Chelmsford from O Fallon is 2 hours 2 minutes . This is approximate direct flying time, and include average plane speed 510 miles per hour. Total flight distance between O Fallon, MO and Chelmsford, MA is about one thousand and forty-three miles or one thousand, six hundred and seventy-nine 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 2 minutes
Select arrival and departure cities, current are O Fallon, MO and MA
This flight will take about two hours two minutes ;
You can buy ticket to plane or drive by car, check ; distance in miles between O Fallon and Chelmsford
| Aircraft | Cruising speed | Time |
| Average | 510 mph | 2 hr 2 min |
| Boeing 737 | 515 mph | 2 hr 1 min |
| Boeing 777 | 554 mph | 1 hr 52 min |
| Airbus | 515 mph | 2 hr 1 min |
Dont forget to include time in airport before and after flight.
| Country | USA |
| State | Missouri |
| City | O Fallon, MO |
| Latitude | 38.81061 |
| Longitude | -90.69985 |
| Country | USA |
| State | Massachusetts |
| City | Chelmsford, MA |
| Latitude | 42.59981 |
| Longitude | -71.36728 |
Please note: current air time calculator show approximate distance and time between cities O Fallon, MO and Chelmsford, MA. 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 O Fallon and Chelmsford. To find out if there is such a flight use the ticket purchase service.