How far is London from Ontario, CA?

The distance between Ontario (Ontario International Airport) and London (London Heathrow Airport) is 5423 miles / 8728 kilometers / 4713 nautical miles.

Distance from Ontario to London

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

Vincenty's formula (applied above)

• 5423.466 miles
• 8728.222 kilometers
• 4712.863 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

• 5410.476 miles
• 8707.318 kilometers
• 4701.575 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 London?

The estimated flight time from Ontario International Airport to London Heathrow Airport is 10 hours and 46 minutes.

What is the time difference between Ontario and London?

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

Flight carbon footprint between Ontario International Airport (ONT) and London Heathrow Airport (LHR)

On average, flying from Ontario to London generates about 639 kg of CO2 per passenger, and 639 kilograms equals 1 410 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path from Ontario to London

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

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 Heathrow Airport
City:	London
Country:	United Kingdom
IATA Code:	LHR
ICAO Code:	EGLL
Coordinates:	51°28′14″N, 0°27′42″W