How far is Portsmouth, NH, from Baltimore, MD?
The distance between Baltimore (Baltimore–Washington International Airport) and Portsmouth (Portsmouth International Airport at Pease) is 407 miles / 654 kilometers / 353 nautical miles.
The driving distance from Baltimore (BWI) to Portsmouth (PSM) is 463 miles / 745 kilometers, and travel time by car is about 9 hours 29 minutes.
Baltimore–Washington International Airport – Portsmouth International Airport at Pease
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Distance from Baltimore to Portsmouth
There are several ways to calculate the distance from Baltimore to Portsmouth. Here are two standard methods:
Vincenty's formula (applied above)- 406.677 miles
- 654.483 kilometers
- 353.392 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- 406.315 miles
- 653.900 kilometers
- 353.078 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 Baltimore to Portsmouth?
The estimated flight time from Baltimore–Washington International Airport to Portsmouth International Airport at Pease is 1 hour and 16 minutes.
What is the time difference between Baltimore and Portsmouth?
There is no time difference between Baltimore and Portsmouth.
Flight carbon footprint between Baltimore–Washington International Airport (BWI) and Portsmouth International Airport at Pease (PSM)
On average, flying from Baltimore to Portsmouth generates about 85 kg of CO2 per passenger, and 85 kilograms equals 187 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path and driving directions from Baltimore to Portsmouth
See the map of the shortest flight path between Baltimore–Washington International Airport (BWI) and Portsmouth International Airport at Pease (PSM).
Airport information
| Origin | Baltimore–Washington International Airport |
|---|---|
| City: | Baltimore, MD |
| Country: | United States  |
| IATA Code: | BWI |
| ICAO Code: | KBWI |
| Coordinates: | 39°10′31″N, 76°40′5″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 |