
Popular airlines from Heathrow Airport (LHR) to Los Angeles - Ontario Intl. Airport (ONT)
- British Airways
British Airways
- Virgin Atlantic
Virgin Atlantic
- Iberia
Iberia
- Air France
Air France
- KLM
KLM
- United
United
- American Airlines
American Airlines
- Plan, book, fly with confidence
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Cheap flights from London to Ontario (LHR-ONT)
Prices were available within the past 7 days and start at €752 for one-way flights and €490 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, 7 Feb - Tue, 10 Feb
LHR
London
ONT
Ontario
€490 Return, found 2 days ago
€490
Return
found 2 days ago

Sun, 24 Aug - Tue, 9 Sep
LHR
London
ONT
Ontario
€495 Return, found 6 days ago
€495
Return
found 6 days ago

Sun, 7 Sep - Fri, 19 Sep
LHR
London
ONT
Ontario
€619 Return, found 6 days ago
€619
Return
found 6 days ago

Sun, 19 Oct - Wed, 22 Oct
LHR
London
ONT
Ontario
€1,209 Return, found 3 days ago
€1,209
Return
found 3 days ago

Fri, 12 Dec - Sun, 4 Jan
LHR
London
ONT
Ontario
€1,242 Return, found 2 days ago
€1,242
Return
found 2 days ago
Find the cheapest month to fly from London (LHR) to Ontario (ONT)
November is typically the cheapest month to fly
From €435 - €1,095 per traveller.
Graph displaying average flight prices per month
Origin airport | Heathrow |
Destination airport | Los Angeles - Ontario Intl. |
Return price | €490 |
Distance | 8655 km |
Perfect flights from London to Ontario
Embark on an unforgettable journey without breaking the bank with Expedia's incredible deals on cheap flights from London to Ontario. Whether you're aching for a romantic escape with your partner, craving an adventurous solo expedition, or yearning to immerse yourself in the local history and culture, we've got you covered.
Picture yourself strolling through the streets of , surrounded by breathtaking architecture and absorbing the vibrant atmosphere of this captivating city. Indulge in the mouth-watering local specialties, from tantalizing street food to exquisite fine dining. With Expedia, you can experience all of this and more, without sacrificing your budget.
Our flexible Heathrow to Los Angeles - Ontario Intl. ticket options cater to your travel preferences, with incredible one-way fares from €752 and roundtrip prices from €490. Whether you're planning a short city break or a longer adventure, our dynamic pricing ensures that you find the best deals for your journey.
But the magic doesn't stop there. Expedia offers a range of partner services to enhance your trip. Rent a car at Los Angeles - Ontario Intl. and explore and its surrounding areas at your own pace. Discover hidden gems off the beaten path, and create unforgettable memories. We also provide a handpicked selection of accommodations, from charming bed and breakfasts to luxury hotels, ensuring that you have a comfortable and memorable stay.
Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support are designed to make your travel experience seamless and stress-free. So, why wait? Book your to travel arrangements today and embark on the journey of a lifetime in Ontario.
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