How far is Ontario, CA, from London?

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

Distance from London to Ontario

There are several ways to calculate the distance from London to Ontario. 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 London to Ontario?

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

What is the time difference between London and Ontario?

The time difference between London and Ontario is 8 hours. Ontario is 8 hours behind London.

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

On average, flying from London to Ontario 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 London to Ontario

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

Airport information

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

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