
Popular airlines from Heathrow Airport (LHR) to Los Angeles - Ontario Intl. Airport (ONT)
- British Airways
British Airways
- Iberia
Iberia
- Virgin Atlantic
Virgin Atlantic
- KLM
KLM
- American Airlines
American Airlines
- Air France
Air France
- United
United
- Plan, book, fly with confidence
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Cheap Flights from London (LHR) to Ontario (ONT)
Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.










Find the cheapest month to fly from London (LHR) to Ontario (ONT)
November is typically the cheapest month to fly
Graph displaying average flight prices per month
Origin airport | Heathrow |
Destination airport | Los Angeles - Ontario Intl. |
Airlines serving | American Airlines, United |
Return price | AU$909 |
Distance | 8655 km |
Your quick guide to flights from London to Ontario
Pick up great flights from London to Ontario
With Expedia, you have your pick of flights a day with 20 airlines covering flights from London to Ontario. Whether you’re on a business trip, a family holiday or a luxury break, just enter your travel dates, hit search then check out your choice of flights. Select from return, one way or multi-city flights, and use the advance search tool if you want a direct or refundable flight. You can narrow your search to show you just your preferred cabin class and airline, too. It’s all easy. You can book direct flights from London to Ontario that take around hours.
Find cheap flights from London to Ontario
From the great flight deals with prices currently ranging from AU$910 to AU$1,456, you can choose to see the cheapest flights first. Generally, you can book the cheapest flights from London to Ontario around 4 to 6 weeks in advance. If your travel dates are flexible, try to avoid weekends and peak seasons – when you are more likely to grab the lowest prices. Even last minute, there are some impressive deals. The cheapest time to fly to Ontario is normally in September.
Reasons to book your flight from London to Ontario with Expedia
Expedia makes it easy to find, book, and travel, with everything you need all in one place. When you enter your travel details, find fantastic deals just for you on flight tickets from London to Ontario across all the main airline carriers, so you can save time, dollars, and hassle finding the perfect flight. If you think your plans could change, choose refundable flights so any changes won’t cost you more. Book your flight to Ontario right now and, if you join Expedia Rewards, you earn points this time and every time you travel with Expedia.
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