How far is Portsmouth, NH, from Key West, FL?
The distance between Key West (Key West International Airport) and Portsmouth (Portsmouth International Airport at Pease) is 1420 miles / 2286 kilometers / 1234 nautical miles.
The driving distance from Key West (EYW) to Portsmouth (PSM) is 1703 miles / 2741 kilometers, and travel time by car is about 33 hours 19 minutes.
Key West International Airport – Portsmouth International Airport at Pease
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Distance from Key West to Portsmouth
There are several ways to calculate the distance from Key West to Portsmouth. Here are two standard methods:
Vincenty's formula (applied above)- 1420.217 miles
- 2285.618 kilometers
- 1234.135 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- 1422.450 miles
- 2289.212 kilometers
- 1236.076 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 Key West to Portsmouth?
The estimated flight time from Key West International Airport to Portsmouth International Airport at Pease is 3 hours and 11 minutes.
What is the time difference between Key West and Portsmouth?
There is no time difference between Key West and Portsmouth.
Flight carbon footprint between Key West International Airport (EYW) and Portsmouth International Airport at Pease (PSM)
On average, flying from Key West to Portsmouth generates about 174 kg of CO2 per passenger, and 174 kilograms equals 385 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path and driving directions from Key West to Portsmouth
See the map of the shortest flight path between Key West International Airport (EYW) and Portsmouth International Airport at Pease (PSM).
Airport information
| Origin | Key West International Airport |
|---|---|
| City: | Key West, FL |
| Country: | United States  |
| IATA Code: | EYW |
| ICAO Code: | KEYW |
| Coordinates: | 24°33′21″N, 81°45′34″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 |