How far is Baltimore, MD, from Portsmouth, NH?
The distance between Portsmouth (Portsmouth International Airport at Pease) and Baltimore (Baltimore–Washington International Airport) is 407 miles / 654 kilometers / 353 nautical miles.
The driving distance from Portsmouth (PSM) to Baltimore (BWI) is 463 miles / 745 kilometers, and travel time by car is about 9 hours 29 minutes.
Portsmouth International Airport at Pease – Baltimore–Washington International Airport
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Distance from Portsmouth to Baltimore
There are several ways to calculate the distance from Portsmouth to Baltimore. 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 Portsmouth to Baltimore?
The estimated flight time from Portsmouth International Airport at Pease to Baltimore–Washington International Airport is 1 hour and 16 minutes.
What is the time difference between Portsmouth and Baltimore?
There is no time difference between Portsmouth and Baltimore.
Flight carbon footprint between Portsmouth International Airport at Pease (PSM) and Baltimore–Washington International Airport (BWI)
On average, flying from Portsmouth to Baltimore 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 Portsmouth to Baltimore
See the map of the shortest flight path between Portsmouth International Airport at Pease (PSM) and Baltimore–Washington International Airport (BWI).
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 | 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 |