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Distance between Baltimore, MD (BWI) and Portsmouth, NH (PSM)

Flight distance from Baltimore to Portsmouth (Baltimore–Washington International Airport – Portsmouth International Airport at Pease) is 407 miles / 654 kilometers / 353 nautical miles. Estimated flight time is 1 hour 16 minutes.

Driving distance from Baltimore (BWI) to Portsmouth (PSM) is 459 miles / 738 kilometers and travel time by car is about 9 hours 24 minutes.

Baltimore – Portsmouth

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407
Miles
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654
Kilometers
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353
Nautical miles

How far is Portsmouth from Baltimore?

There are several ways to calculate distances between Los Angeles and Chicago. Here are two common 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 earth.

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).

Flight Duration

Estimated flight time from Baltimore to Portsmouth is 1 hour 16 minutes.

Time difference and current local times

There is no time difference between Baltimore and Portsmouth.

Baltimore time to Portsmouth time converter

Time in Baltimore: 00:00 ⇆ Time in Portsmouth: 00:00

Current local times

Baltimore, MD

 EDT

Portsmouth, NH

 EDT

Carbon dioxide emissions

On average flying from Baltimore to Portsmouth generates about 85 kg of CO2 per passenger, 85 kilograms is equal to 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

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 Flag of 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 Flag of United States
IATA Code: PSM
ICAO Code: KPSM
Coordinates: 43°4′40″N, 70°49′23″W