How far is Portsmouth, NH, from Ketchikan, AK?
The distance between Ketchikan (Ketchikan International Airport) and Portsmouth (Portsmouth International Airport at Pease) is 2784 miles / 4481 kilometers / 2420 nautical miles.
The driving distance from Ketchikan (KTN) to Portsmouth (PSM) is 3629 miles / 5840 kilometers, and travel time by car is about 75 hours 30 minutes.
Ketchikan International Airport – Portsmouth International Airport at Pease
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Distance from Ketchikan to Portsmouth
There are several ways to calculate the distance from Ketchikan to Portsmouth. Here are two standard methods:
Vincenty's formula (applied above)- 2784.465 miles
- 4481.162 kilometers
- 2419.634 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- 2776.807 miles
- 4468.838 kilometers
- 2412.979 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 Ketchikan to Portsmouth?
The estimated flight time from Ketchikan International Airport to Portsmouth International Airport at Pease is 5 hours and 46 minutes.
What is the time difference between Ketchikan and Portsmouth?
Flight carbon footprint between Ketchikan International Airport (KTN) and Portsmouth International Airport at Pease (PSM)
On average, flying from Ketchikan to Portsmouth generates about 309 kg of CO2 per passenger, and 309 kilograms equals 680 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path and driving directions from Ketchikan to Portsmouth
See the map of the shortest flight path between Ketchikan International Airport (KTN) and Portsmouth International Airport at Pease (PSM).
Airport information
| Origin | Ketchikan International Airport |
|---|---|
| City: | Ketchikan, AK |
| Country: | United States  |
| IATA Code: | KTN |
| ICAO Code: | PAKT |
| Coordinates: | 55°21′19″N, 131°42′38″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 |