How far is Southend from Seattle, WA?

The distance between Seattle (Seattle–Tacoma International Airport) and Southend (London Southend Airport) is 4825 miles / 7765 kilometers / 4193 nautical miles.

Distance from Seattle to Southend

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

Vincenty's formula (applied above)

• 4825.115 miles
• 7765.270 kilometers
• 4192.910 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

• 4810.674 miles
• 7742.030 kilometers
• 4180.362 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 Southend?

The estimated flight time from Seattle–Tacoma International Airport to London Southend Airport is 9 hours and 38 minutes.

What is the time difference between Seattle and Southend?

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

Flight carbon footprint between Seattle–Tacoma International Airport (SEA) and London Southend Airport (SEN)

On average, flying from Seattle to Southend generates about 561 kg of CO2 per passenger, and 561 kilograms equals 1 237 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path from Seattle to Southend

See the map of the shortest flight path between Seattle–Tacoma International Airport (SEA) and London Southend Airport (SEN).

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	London Southend Airport
City:	Southend
Country:	United Kingdom
IATA Code:	SEN
ICAO Code:	EGMC
Coordinates:	51°34′17″N, 0°41′44″E