How far is Porto from Seattle, WA?

The distance between Seattle (Seattle–Tacoma International Airport) and Porto (Porto Airport) is 5101 miles / 8209 kilometers / 4432 nautical miles.

Distance from Seattle to Porto

There are several ways to calculate the distance from Seattle to Porto. Here are two standard methods:

Vincenty's formula (applied above)

• 5100.616 miles
• 8208.646 kilometers
• 4432.314 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

• 5086.989 miles
• 8186.715 kilometers
• 4420.472 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 Seattle to Porto?

The estimated flight time from Seattle–Tacoma International Airport to Porto Airport is 10 hours and 9 minutes.

What is the time difference between Seattle and Porto?

The time difference between Seattle and Porto is 8 hours. Porto is 8 hours ahead of Seattle.

Flight carbon footprint between Seattle–Tacoma International Airport (SEA) and Porto Airport (OPO)

On average, flying from Seattle to Porto generates about 597 kg of CO2 per passenger, and 597 kilograms equals 1 316 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path from Seattle to Porto

See the map of the shortest flight path between Seattle–Tacoma International Airport (SEA) and Porto Airport (OPO).

Airport information

Origin	Seattle–Tacoma International Airport
City:	Seattle, WA
Country:	United States
IATA Code:	SEA
ICAO Code:	KSEA
Coordinates:	47°26′56″N, 122°18′32″W

Destination	Porto Airport
City:	Porto
Country:	Portugal
IATA Code:	OPO
ICAO Code:	LPPR
Coordinates:	41°14′53″N, 8°40′53″W