Beginning of main content
Round Trip Icon
Trip Type
Flight 1
Flight 2
Flight 3
Flight 4
Flight 5
Due to coronavirus (COVID-19) travel advisories, some destinations may be unavailable for certain dates. Find out more.

Change your flight without a fee on select flights

Feel at ease with free flight cancellations within 24 hours of booking

Flights Fare Calendar Find minimum fare between Los Angeles - Ontario Intl. and Heathrow Click this button to get previous days data Click this button to get next days data $2,774 $2,378 $1,981 $1,585 $1,189 $793 $396 $0 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T Price is $1,499 on British Airways Price is $1,997 on British Airways Price is $1,997 on British Airways Price is $1,997 on British Airways Price is $1,937 on British Airways Price is $1,971 on British Airways Price is $1,582 on American Airlines Price is $1,612 on British Airways Price is $1,772 on British Airways Price is $1,665 on Air Canada Price is $1,672 on British Airways Price is $1,612 on British Airways Price is $1,347 on British Airways Price is $1,347 on British Airways Price is $1,423 on Air Canada Price is $1,694 on British Airways Price is $1,573 on Air Canada Price is $2,774 on British Airways Price is $1,466 on United Price is $1,331 on British Airways Price is $1,544 on British Airways Price is $1,444 on British Airways Price is $1,644 on British Airways Price is $1,644 on British Airways Price is $1,544 on British Airways Price is $1,437 on Air Canada Price is $894 on British Airways Price is $894 on British Airways Price is $894 on British Airways Price is $1,093 on Air Canada

Amazing ONT to LHR Flight Deals

The cheapest flights to Heathrow found within the past 7 days were $667 round trip and $574 one way. Prices and availability subject to change. Additional terms may apply.

FAQs about flights from Los Angeles - Ontario Intl. Airport (ONT) to Heathrow Airport (LHR)

Can I catch a flight from Ontario, CA Airport (ONT-Los Angeles - Ontario Intl.) to London Airport (LHR-Heathrow) right now?

Make sure you visit the Covid-19 Travel Advisor to find out if there are any present travel advice reports and quarantine requirements in effect in London Airport (LHR-Heathrow) when jet-setting from Ontario, CA Airport (ONT-Los Angeles - Ontario Intl.).

If I am not able to travel due to COVID-19, can I change my booking to a later date?

For more info about changing your flight to London Airport (LHR-Heathrow), please visit our Customer Service Portal.

What airlines fly from Los Angeles - Ontario Intl. Airport (ONT) to Heathrow Airport?

Unfortunately, you won't find any airlines that fly straight from Ontario, CA Airport (ONT-Los Angeles - Ontario Intl.) to Heathrow Airport. But don't let that get in the way of a good vacation. Use any layover as an opportunity to stretch your legs, check out the local fare and potentially find a new city you want to get to know better.

What is the best day to buy a plane ticket?

This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2020. Wednesday and Friday prices are also good, but you may want to prepare your budget if booking on a Sunday, as data shows the end of the week is when prices are generally at their highest.

What are the cheapest days to fly?

Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2020, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.

How far in advance can you book a flight?

Trying to figure out how early you should book your flight? It's possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2020 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 2 weeks to 2 months prior to their travel dates.

How can I save money on airline tickets?

We'll let you in on a secret...You can save big on flights if you mix and match your airlines and fare types. In fact, travelers who booked flights on Travelocity in 2020 saved nearly 40% when their return flights consisted of two different airlines or fare types.

*According to flight demand on Travelocity.com from January to December 2020. Savings are subject to change based on departure location, date and destination.

Los Angeles - Ontario Intl. to Heathrow Flight FAQ

Traveling FromLos Angeles - Ontario Intl.
Traveling ToHeathrow
Shortest Flight Time hours mins
Earliest Departure Time
Latest Departure Time
Lowest Flight Price$667

Route Info

Flight path for flights from LA/Ontario International Airport to London Heathrow Airport.


Distance:
5,747.00 miles


Popular Flight Routes from Ontario (ONT)

Los Angeles - Ontario Intl. to Heathrow Flight FAQ

Traveling FromLos Angeles - Ontario Intl.
Traveling ToHeathrow
Shortest Flight Time hours mins
Earliest Departure Time
Latest Departure Time
Lowest Flight Price$667

Popular Flight Routes from London (LHR)

Travelers at LHR love to visit these top cities. Roam to the top destinations from London(LHR) today with the cheap prices from Travelocity!

*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.