How far is Lopez, WA, from Great Falls, MT?
The distance between Great Falls (Great Falls International Airport) and Lopez (Lopez Island Airport) is 540 miles / 870 kilometers / 470 nautical miles.
The driving distance from Great Falls (GTF) to Lopez (LPS) is 740 miles / 1191 kilometers, and travel time by car is about 14 hours 49 minutes.
Great Falls International Airport – Lopez Island Airport
Search flights
Distance from Great Falls to Lopez
There are several ways to calculate the distance from Great Falls to Lopez. Here are two standard methods:
Vincenty's formula (applied above)- 540.455 miles
- 869.777 kilometers
- 469.642 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- 538.879 miles
- 867.242 kilometers
- 468.273 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 Lopez?
The estimated flight time from Great Falls International Airport to Lopez Island Airport is 1 hour and 31 minutes.
What is the time difference between Great Falls and Lopez?
The time difference between Great Falls and Lopez is 1 hour. Lopez is 1 hour behind Great Falls.
Flight carbon footprint between Great Falls International Airport (GTF) and Lopez Island Airport (LPS)
On average, flying from Great Falls to Lopez generates about 105 kg of CO2 per passenger, and 105 kilograms equals 231 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 Lopez
See the map of the shortest flight path between Great Falls International Airport (GTF) and Lopez Island Airport (LPS).
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 | Lopez Island Airport |
|---|---|
| City: | Lopez, WA |
| Country: | United States |
| IATA Code: | LPS |
| ICAO Code: | S31 |
| Coordinates: | 48°29′2″N, 122°56′16″W |