How far is Portsmouth, NH, from Ottawa?
The distance between Ottawa (Ottawa Macdonald–Cartier International Airport) and Portsmouth (Portsmouth International Airport at Pease) is 286 miles / 461 kilometers / 249 nautical miles.
The driving distance from Ottawa (YOW) to Portsmouth (PSM) is 411 miles / 661 kilometers, and travel time by car is about 8 hours 32 minutes.
Ottawa Macdonald–Cartier International Airport – Portsmouth International Airport at Pease
Search flights
Distance from Ottawa to Portsmouth
There are several ways to calculate the distance from Ottawa to Portsmouth. Here are two standard methods:
Vincenty's formula (applied above)- 286.194 miles
- 460.584 kilometers
- 248.695 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- 285.699 miles
- 459.787 kilometers
- 248.265 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 Ottawa to Portsmouth?
The estimated flight time from Ottawa Macdonald–Cartier International Airport to Portsmouth International Airport at Pease is 1 hour and 2 minutes.
What is the time difference between Ottawa and Portsmouth?
Flight carbon footprint between Ottawa Macdonald–Cartier International Airport (YOW) and Portsmouth International Airport at Pease (PSM)
On average, flying from Ottawa to Portsmouth generates about 67 kg of CO2 per passenger, and 67 kilograms equals 148 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path and driving directions from Ottawa to Portsmouth
See the map of the shortest flight path between Ottawa Macdonald–Cartier International Airport (YOW) and Portsmouth International Airport at Pease (PSM).
Airport information
| Origin | Ottawa Macdonald–Cartier International Airport |
|---|---|
| City: | Ottawa |
| Country: | Canada  |
| IATA Code: | YOW |
| ICAO Code: | CYOW |
| Coordinates: | 45°19′20″N, 75°40′9″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 |