￥58,210 Cheap Flights from Ontario (ONT) to London (LHR)

View ￥58,210 flight on Mon, Jan 26, 2026Opens in a new window

Popular airlines from Los Angeles - Ontario Intl. Airport (ONT) to Heathrow Airport (LHR)

  • notification illustration

    Be in the know

    Get alerts if flight prices drop or rise*
  • deals illustration

    Book smarter

    Save up to 40% on select hotels after you book a flight*
  • trophy illustration

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap Flights from Ontario to London (ONT-LHR)

Prices were available within the past 7 days and start at ￥58,210 for one-way flights and ￥105,000 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, Mar 7 - Fri, Mar 20
ONT
Ontario
LHR
London
￥105,000 Roundtrip, found 4 days ago
￥105,000
Roundtrip
found 4 days ago
Select Delta flight, departing Sat, Mar 7 from Ontario to London, returning Fri, Mar 20, priced at ￥105,000 found 4 days ago
Delta
Wed, Mar 18 - Wed, Mar 25
ONT
Ontario
LHR
London
￥105,090 Roundtrip, found 5 days ago
￥105,090
Roundtrip
found 5 days ago
Select Delta flight, departing Wed, Mar 18 from Ontario to London, returning Wed, Mar 25, priced at ￥105,090 found 5 days ago
United
Wed, Apr 15 - Sun, Apr 26
ONT
Ontario
LHR
London
￥115,280 Roundtrip, found 4 days ago
￥115,280
Roundtrip
found 4 days ago
Select United flight, departing Wed, Apr 15 from Ontario to London, returning Sun, Apr 26, priced at ￥115,280 found 4 days ago
United
Sun, Apr 12 - Sun, Apr 19
ONT
Ontario
LHR
London
￥144,100 Roundtrip, found 1 day ago
￥144,100
Roundtrip
found 1 day ago
Select United flight, departing Sun, Apr 12 from Ontario to London, returning Sun, Apr 19, priced at ￥144,100 found 1 day ago
Delta
Wed, Jan 28 - Sat, Jan 31
ONT
Ontario
LHR
London
￥146,570 Roundtrip, found 21 hours ago
￥146,570
Roundtrip
found 21 hours ago
Select Delta flight, departing Wed, Jan 28 from Ontario to London, returning Sat, Jan 31, priced at ￥146,570 found 21 hours ago
Delta
Sat, Mar 7 - Fri, Mar 20
ONT
Ontario
LHR
London
￥160,220 Roundtrip, found 4 days ago
￥160,220
Roundtrip
found 4 days ago
Select Delta flight, departing Sat, Mar 7 from Ontario to London, returning Fri, Mar 20, priced at ￥160,220 found 4 days ago
United
Thu, Mar 26 - Sun, Apr 5
ONT
Ontario
LHR
London
￥169,300 Roundtrip, found 2 days ago
￥169,300
Roundtrip
found 2 days ago
Select United flight, departing Thu, Mar 26 from Ontario to London, returning Sun, Apr 5, priced at ￥169,300 found 2 days ago
Delta
Fri, Mar 27 - Sun, Apr 5
ONT
Ontario
LHR
London
￥170,170 Roundtrip, found 2 days ago
￥170,170
Roundtrip
found 2 days ago
Select Delta flight, departing Fri, Mar 27 from Ontario to London, returning Sun, Apr 5, priced at ￥170,170 found 2 days ago
Delta
Fri, Mar 27 - Sun, Apr 5
ONT
Ontario
LHR
London
￥173,070 Roundtrip, found 2 days ago
￥173,070
Roundtrip
found 2 days ago
Select Delta flight, departing Fri, Mar 27 from Ontario to London, returning Sun, Apr 5, priced at ￥173,070 found 2 days ago
Delta
Wed, Jan 28 - Sat, Jan 31
ONT
Ontario
LHR
London
￥178,110 Roundtrip, found 21 hours ago
￥178,110
Roundtrip
found 21 hours ago
Select Delta flight, departing Wed, Jan 28 from Ontario to London, returning Sat, Jan 31, priced at ￥178,110 found 21 hours ago

Find the cheapest month to fly from Ontario (ONT) to London (LHR)

September is typically the cheapest month to fly

From ￥82,215 - ￥163,464 per traveler.

Alternative airports near London

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Heathrow LHR. Cheapest option available. Average driving time to city center is 28 minutes. Flights from ￥241,980
LHR
Heathrow
Cheapest
Average driving time to city center28 min
Flights from ￥241,980
Flights from Ontario (ONT) to London (LHR)
Origin airport
Los Angeles - Ontario Intl.
Destination airport
Heathrow
Airlines serving
United
Roundtrip price
￥105,000
Distance
8655 km

Ontario to London Flights

Sometimes you just need to get out of town or maybe you’re looking for a change of scenery. Regardless of the reason, a flight from Ontario to will do just the trick! Go on, plan to see all the famous landmarks and eat your weight in the local cuisine. Your trip is beckoning, so answer the call by packing your suitcase and filling your travel itinerary with exploring London.

Whether you’re flying for business or jet-setting on your personal time, you’ve come to the right place. Here at Expedia.com, we’ll pair you up with ONT to LHR flights that won’t make your bank account wince. Ready to temporarily leave behind Ontario for new horizons? Browse through our cheap airfare, and filter by flight times and dates until you find just what you had in mind. From flights without layovers to ones that arrive early in the morning, you’ll come across plane tickets that suit your travel preferences. You can even bundle your flight to LHR with hotels and car rentals to score even bigger savings.

All set to hit the clouds? Book your travel arrangements with us today and have left-over money to put toward your travel outings and adventures.

Frequently asked questions

How much is a flight from Los Angeles - Ontario Intl. Airport (ONT) to London Heathrow?
Based on fares quoted within the last 7 days on Expedia for flights departing within the next year, round-trip flights from Los Angeles - Ontario Intl. Airport (ONT) to LHR start from ￥105,000. Book now to secure the best price for your next big adventure. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Ontario Airport to LHR?
We understand that things come up unexpectedly, so we've made it as hassle-free as possible for you to cancel your trip online. Just head to the Customer Service Portal and follow the instructions.
How do I find cheap flights from Ontario Airport to London Heathrow that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Los Angeles - Ontario Intl. Airport (ONT) to LHR flights, you'll see a "no change fees" filter for you to select.
How many hours is the flight from Los Angeles - Ontario Intl. Airport (ONT) to Heathrow Airport (LHR)?
The flight time from ONT to LHR is typically 13 hours and 5 minutes. It's is no quick joyride, so remember to fill your carry-on bag with plenty to keep you busy.
How far is the flight from Ontario Airport to Heathrow Airport?
The distance is around 8,700 kilometers, so fill your carry-on luggage with everything you need to make the long journey comfortable. Not sure what to take on board your Ontario to Hounslow flight? Earplugs, a sleep mask and a neck pillow are a few essentials.
Which airlines fly direct from ONT to Heathrow Airport (LHR)?
Unfortunately, there are no airlines that directly fly between ONT and Heathrow Airport (LHR). You'll need to book a flight with at least one stop.
Are Ontario Airport to LHR flight tickets cheaper when they're purchased at the last minute?
Last-minute bookings from Los Angeles - Ontario Intl. Airport (ONT) to Heathrow Airport (LHR) can be hit-or-miss. You may be able to score a great bargain, but then again, you could miss out! If you'd rather play it safe and start planning your trip early on, Expedia compares flight deals up to a year in advance. Just bear in mind that not all airlines release their prices that far in advance. Our suggestion? Check back often as updates are made regularly.

Explore a world of travel with Expedia

Ontario nearby Airports

Los Angeles

Los Angeles Intl. to London
￥87,200

Burbank

*Available to Expedia members.