How far is Southend from Ontario, CA?

The distance between Ontario (Ontario International Airport) and Southend (London Southend Airport) is 5456 miles / 8781 kilometers / 4741 nautical miles.

Distance from Ontario to Southend

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

Vincenty's formula (applied above)

• 5456.168 miles
• 8780.851 kilometers
• 4741.280 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

• 5443.095 miles
• 8759.813 kilometers
• 4729.921 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 Ontario to Southend?

The estimated flight time from Ontario International Airport to London Southend Airport is 10 hours and 49 minutes.

What is the time difference between Ontario and Southend?

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

Flight carbon footprint between Ontario International Airport (ONT) and London Southend Airport (SEN)

On average, flying from Ontario to Southend generates about 644 kg of CO2 per passenger, and 644 kilograms equals 1 419 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path from Ontario to Southend

See the map of the shortest flight path between Ontario International Airport (ONT) and London Southend Airport (SEN).

Airport information

Origin	Ontario International Airport
City:	Ontario, CA
Country:	United States
IATA Code:	ONT
ICAO Code:	KONT
Coordinates:	34°3′21″N, 117°36′3″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