How far is Ketchikan, AK, from Portsmouth, NH?
The distance between Portsmouth (Portsmouth International Airport at Pease) and Ketchikan (Ketchikan International Airport) is 2784 miles / 4481 kilometers / 2420 nautical miles.
The driving distance from Portsmouth (PSM) to Ketchikan (KTN) is 3596 miles / 5788 kilometers, and travel time by car is about 75 hours 12 minutes.
Portsmouth International Airport at Pease – Ketchikan International Airport
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Distance from Portsmouth to Ketchikan
There are several ways to calculate the distance from Portsmouth to Ketchikan. 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 Portsmouth to Ketchikan?
The estimated flight time from Portsmouth International Airport at Pease to Ketchikan International Airport is 5 hours and 46 minutes.
What is the time difference between Portsmouth and Ketchikan?
Flight carbon footprint between Portsmouth International Airport at Pease (PSM) and Ketchikan International Airport (KTN)
On average, flying from Portsmouth to Ketchikan 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 Portsmouth to Ketchikan
See the map of the shortest flight path between Portsmouth International Airport at Pease (PSM) and Ketchikan International Airport (KTN).
Airport information
| Origin | 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 |
| Destination | Ketchikan International Airport |
|---|---|
| City: | Ketchikan, AK |
| Country: | United States |
| IATA Code: | KTN |
| ICAO Code: | PAKT |
| Coordinates: | 55°21′19″N, 131°42′38″W |