How far is Portland, ME, from Great Falls, MT?
The distance between Great Falls (Great Falls International Airport) and Portland (Portland International Jetport) is 1986 miles / 3196 kilometers / 1726 nautical miles.
The driving distance from Great Falls (GTF) to Portland (PWM) is 2374 miles / 3820 kilometers, and travel time by car is about 45 hours 11 minutes.
Great Falls International Airport – Portland International Jetport
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Distance from Great Falls to Portland
There are several ways to calculate the distance from Great Falls to Portland. Here are two standard methods:
Vincenty's formula (applied above)- 1985.891 miles
- 3195.982 kilometers
- 1725.692 nautical miles
Vincenty's formula calculates the distance between latitude/longitude points on the earth's surface using an ellipsoidal model of the planet.
Haversine formula- 1980.405 miles
- 3187.153 kilometers
- 1720.925 nautical miles
The haversine formula calculates the distance between latitude/longitude points assuming a spherical earth (great-circle distance – the shortest distance between two points).
How long does it take to fly from Great Falls to Portland?
The estimated flight time from Great Falls International Airport to Portland International Jetport is 4 hours and 15 minutes.
What is the time difference between Great Falls and Portland?
Flight carbon footprint between Great Falls International Airport (GTF) and Portland International Jetport (PWM)
On average, flying from Great Falls to Portland generates about 216 kg of CO2 per passenger, and 216 kilograms equals 477 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path and driving directions from Great Falls to Portland
See the map of the shortest flight path between Great Falls International Airport (GTF) and Portland International Jetport (PWM).
Airport information
| Origin | Great Falls International Airport |
|---|---|
| City: | Great Falls, MT |
| Country: | United States  |
| IATA Code: | GTF |
| ICAO Code: | KGTF |
| Coordinates: | 47°28′55″N, 111°22′15″W |
| Destination | Portland International Jetport |
|---|---|
| City: | Portland, ME |
| Country: | United States |
| IATA Code: | PWM |
| ICAO Code: | KPWM |
| Coordinates: | 43°38′46″N, 70°18′33″W |