How far is Portsmouth, NH, from Lewistown, MT?
The distance between Lewistown (Lewistown Municipal Airport) and Portsmouth (Portsmouth International Airport at Pease) is 1891 miles / 3044 kilometers / 1644 nautical miles.
The driving distance from Lewistown (LWT) to Portsmouth (PSM) is 2220 miles / 3572 kilometers, and travel time by car is about 42 hours 11 minutes.
Lewistown Municipal Airport – Portsmouth International Airport at Pease
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Distance from Lewistown to Portsmouth
There are several ways to calculate the distance from Lewistown to Portsmouth. Here are two standard methods:
Vincenty's formula (applied above)- 1891.315 miles
- 3043.776 kilometers
- 1643.508 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- 1886.167 miles
- 3035.492 kilometers
- 1639.034 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 Lewistown to Portsmouth?
The estimated flight time from Lewistown Municipal Airport to Portsmouth International Airport at Pease is 4 hours and 4 minutes.
What is the time difference between Lewistown and Portsmouth?
Flight carbon footprint between Lewistown Municipal Airport (LWT) and Portsmouth International Airport at Pease (PSM)
On average, flying from Lewistown to Portsmouth generates about 208 kg of CO2 per passenger, and 208 kilograms equals 458 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path and driving directions from Lewistown to Portsmouth
See the map of the shortest flight path between Lewistown Municipal Airport (LWT) and Portsmouth International Airport at Pease (PSM).
Airport information
| Origin | Lewistown Municipal Airport |
|---|---|
| City: | Lewistown, MT |
| Country: | United States  |
| IATA Code: | LWT |
| ICAO Code: | KLWT |
| Coordinates: | 47°2′57″N, 109°28′1″W |
| Destination | Portsmouth International Airport at Pease |
|---|---|
| City: | Portsmouth, NH |
| Country: | United States |
| IATA Code: | PSM |
| ICAO Code: | KPSM |
| Coordinates: | 43°4′40″N, 70°49′23″W |