How far is Seattle, WA, from Portsmouth, NH?
The distance between Portsmouth (Portsmouth International Airport at Pease) and Seattle (Seattle Boeing Field) is 2481 miles / 3993 kilometers / 2156 nautical miles.
The driving distance from Portsmouth (PSM) to Seattle (BFI) is 2989 miles / 4811 kilometers, and travel time by car is about 55 hours 30 minutes.
Portsmouth International Airport at Pease – Seattle Boeing Field
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Distance from Portsmouth to Seattle
There are several ways to calculate the distance from Portsmouth to Seattle. Here are two standard methods:
Vincenty's formula (applied above)- 2481.110 miles
- 3992.959 kilometers
- 2156.025 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- 2474.278 miles
- 3981.965 kilometers
- 2150.089 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 Seattle?
The estimated flight time from Portsmouth International Airport at Pease to Seattle Boeing Field is 5 hours and 11 minutes.
What is the time difference between Portsmouth and Seattle?
The time difference between Portsmouth and Seattle is 3 hours. Seattle is 3 hours behind Portsmouth.
Flight carbon footprint between Portsmouth International Airport at Pease (PSM) and Seattle Boeing Field (BFI)
On average, flying from Portsmouth to Seattle generates about 273 kg of CO2 per passenger, and 273 kilograms equals 602 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 Seattle
See the map of the shortest flight path between Portsmouth International Airport at Pease (PSM) and Seattle Boeing Field (BFI).
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 | Seattle Boeing Field |
|---|---|
| City: | Seattle, WA |
| Country: | United States |
| IATA Code: | BFI |
| ICAO Code: | KBFI |
| Coordinates: | 47°31′47″N, 122°18′7″W |