Title: CA $580 Cheap Flights from London (LHR) to Ontario (ONT) - Expedia.ca ![Ontario showing night scenes and street scenes](https://images.trvl-media.com/place/2680/6f6cbfd1-6188-4a75-9ba7-05d8edf0fb1d.jpg?impolicy=fcrop&w=1200&h=500&q=medium) Photo by Ontario Convention & Visitors Bureau / Jon Edwards. ![](https://images.trvl-media.com/place/2680/6f6cbfd1-6188-4a75-9ba7-05d8edf0fb1d.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # CA $580 Cheap Flights from London (LHR) to Ontario (ONT) [View CA $580 flight on Mon, Jan 26, 2026](https://expedia.ca/Flights-Search?trip=oneway&leg1=from:LHR,to:ONT,departure:26/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:579.80&airProductToken=AQqfAQoyCMKCARIDNDcyGOuJASDBaCjtuIMDMOq5gwM4T0AAWAFqBU5PQkFHcglPTFg1QzVCNFAKMwjCggESBDE2NDkYwWggo7EBKMS6gwMw7L-DAzhPQAFYAWoFTk9CQUdyCU9MWDVDNUI0UAo0CMKCARIEMjQzMRijsQEgrpsBKPLCgwMwuMSDAzhPQAFYAWoFTk9CQUdyCU9MWDVDNUI0UBIKCAEQARgBKgJCQRgBIgQIARABKAIoAzAN) - [Roundtrip](?flightType=roundtrip) - [One-way](?flightType=oneway) - [Multi-city](?flightType=multicity) ### Travellers Adults ChildrenAges 2 to 17 InfantsYounger than 2 EconomyPremium economyBusiness classFirst class Leaving from Going to Departing Returning Add a place to stay Add a car Direct flights only ## Popular airlines from Heathrow Airport (LHR) to Los Angeles - Ontario Intl. Airport (ONT) - ![British Airways](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_BA.svg) British Airways [](https://www.expedia.ca/Flights-Search?leg1=from:lhr,to:ont,departure:16/11/2025TANYT&leg2=from:ont,to:lhr,departure:23/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"BA"}}]) - ![Virgin Atlantic](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_VS.svg) Virgin Atlantic [](https://www.expedia.ca/Flights-Search?leg1=from:lhr,to:ont,departure:16/11/2025TANYT&leg2=from:ont,to:lhr,departure:23/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"VS"}}]) - ![Delta](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_DL.svg) Delta [](https://www.expedia.ca/Flights-Search?leg1=from:lhr,to:ont,departure:16/11/2025TANYT&leg2=from:ont,to:lhr,departure:23/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}]) - ![Iberia](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_IB.svg) Iberia [](https://www.expedia.ca/Flights-Search?leg1=from:lhr,to:ont,departure:16/11/2025TANYT&leg2=from:ont,to:lhr,departure:23/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"IB"}}]) - ![KLM](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_KL.svg) KLM [](https://www.expedia.ca/Flights-Search?leg1=from:lhr,to:ont,departure:16/11/2025TANYT&leg2=from:ont,to:lhr,departure:23/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"KL"}}]) - ![Air Canada](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AC.svg) Air Canada [](https://www.expedia.ca/Flights-Search?leg1=from:lhr,to:ont,departure:16/11/2025TANYT&leg2=from:ont,to:lhr,departure:23/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AC"}}]) - ![American Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AA.svg) American Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:lhr,to:ont,departure:16/11/2025TANYT&leg2=from:ont,to:lhr,departure:23/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}]) - ![notification illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__notification.svg) ### Be in the know Get alerts if flight prices drop or rise\* - ![deals illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__deals.svg) ### Book smarter Save up to 30% on select hotels after you book a flight\* - ![trophy illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__trophy.svg) ### Earn twice Earn your airline miles on top of our rewards [Sign in](https://www.expedia.ca/login) ## Cheap flights from London (LHR) to Ontario (ONT) Prices were available within the past 7 days and start at CA $580 for one-way flights and CA $806 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Fri, Jan 30 - Thu, Feb 5 LHR London ONT Ontario CA $806 Roundtrip found 1 day ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:LHR,to:ONT,departure:30/01/2026TANYT&leg2=from:ONT,to:LHR,departure:05/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:805.47&airProductToken=AQp7CkIIxJgBEgQ1OTk5GOuJASDgXCiF6IMDML_sgwM4RUAAWAFqCU1BSU5CQVNJQ3IIVllIUkQ4TE16CgjWpgESBDU5OTkKNQjEmAESAzc3ORjgXCCumwEosu6DAzDT8IMDOEVAAVgBaglNQUlOQkFTSUNyCFZZSFJEOExNCm0KNQjEmAESAzY2NRiumwEg4FwosLCEAzCvsoQDOEVAAFgBaglNQUlOQkFTSUNyCFZZSFJEOExNCjQIxJgBEgIzNhjgXCDriQEot7OEAzCct4QDOEVAAVgBaglNQUlOQkFTSUNyCFZZSFJEOExNEgoIAhABGAIqAkRMGAEiBAgBEAEoAigDKAQwAQ) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Mon, Jan 26 - Tue, Feb 10 LHR London ONT Ontario CA $824 Roundtrip found 5 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:LHR,to:ONT,departure:26/01/2026TANYT&leg2=from:ONT,to:LHR,departure:10/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:823.60&airProductToken=AQpwCjYIxJgBEgQ1OTc1GOuJASCSASj1vIMDMNLBgwM4RUAAWAFqCU1BSU5CQVNJQ3IIVllIUkQ4TE0KNgjEmAESBDQwMjcYkgEgrpsBKIHDgwMwpcSDAzhFQAFYAWoJTUFJTkJBU0lDcghWWUhSRDhMTQpuCjYIxJgBEgQyNzA4GK6bASDyEiio5YQDMJnmhAM4RUAAWAFqCU1BSU5CQVNJQ3IIVllIUkQ4TE0KNAjEmAESAjUwGPISIOuJASie6oQDMNjuhAM4RUABWAFqCU1BSU5CQVNJQ3IIVllIUkQ4TE0SCggCEAEYAioCREwYASIECAEQASgCKAMoBDAB) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Fri, Jan 30 - Fri, Feb 6 LHR London ONT Ontario CA $830 Roundtrip found 6 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:LHR,to:ONT,departure:30/01/2026TANYT&leg2=from:ONT,to:LHR,departure:06/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:829.60&airProductToken=AQptCjQIxJgBEgIzMxjriQEg4Fwol-eDAzDl64MDOEVAAFgBaglNQUlOQkFTSUNyCFZZSFJEOExNCjUIxJgBEgM3NzkY4FwgrpsBKLLugwMw0_CDAzhFQAFYAWoJTUFJTkJBU0lDcghWWUhSRDhMTQptCjUIxJgBEgM0NzUYrpsBIPISKNa7hAMww7yEAzhFQABYAWoJTUFJTkJBU0lDcghWWUhSRDhMTQo0CMSYARICNTAY8hIg64kBKJ69hAMw2MGEAzhFQAFYAWoJTUFJTkJBU0lDcghWWUhSRDhMTRIKCAIQARgCKgJETBgBIgQIARABKAIoAygEMAE) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Fri, Jan 30 - Thu, Feb 5 LHR London ONT Ontario CA $879 Roundtrip found 1 day ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:LHR,to:ONT,departure:30/01/2026TANYT&leg2=from:ONT,to:LHR,departure:05/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:878.77&airProductToken=AQptCjQIxJgBEgIzMxjriQEg4Fwol-eDAzDl64MDOEVAAFgBaglNQUlOQkFTSUNyCFZZSFJEOExNCjUIxJgBEgM3NzkY4FwgrpsBKLLugwMw0_CDAzhFQAFYAWoJTUFJTkJBU0lDcghWWUhSRDhMTQqAAQo-CNamARIENTM5NxiumwEg4FwosLCEAzCvsoQDOFRAAFgBagVMSUdIVHIIT1kyU0pETEF6CgjEmAESBDUzOTcKPgjWpgESBDQwNjcY4Fwg64kBKLezhAMwnLeEAzhUQAFYAWoFTElHSFRyCE9ZMlNKRExBegoIxJgBEgQ0MDY3EgoIAhABGAIqAkRMGAEiBAgBEAEoAigDKAQwAQ) ![British Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/BA.gif) Fri, Feb 6 - Thu, Feb 12 LHR London ONT Ontario CA $884 Roundtrip found 9 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:LHR,to:ONT,departure:06/02/2026TANYT&leg2=from:ONT,to:LHR,departure:12/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:883.80&airProductToken=AQq0AQoxCMKCARIDNDcyGOuJASDBaCjNtIQDMMq1hAM4T0AAWAFqBU5PQkFHcghPTE4wVDFCNAo-CMKCARIEMTY0ORjBaCCjsQEopLaEAzDMu4QDOE9AAVgBagVOT0JBR3IIT0xOMFQxQjR6CgjBggESBDE2NDkKPwjCggESBDI0MzEYo7EBIK6bASjSvoQDMJjAhAM4T0ABWAFqBU5PQkFHcghPTE4wVDFCNHoKCMGCARIEMjQzMQqEAQpACMKCARIENTEwORiumwEgo7EBKJP-hAMwwv-EAzhPQABYAWoFTk9CQUdyCU9MWDhDMUI0UHoKCMGCARIENTEwOQpACMKCARIEMTUyMRijsQEg64kBKNuBhQMw_IWFAzhPQAFYAWoFTk9CQUdyCU9MWDhDMUI0UHoKCMGCARIEMTUyMRIKCAEQARgBKgJCQRgBIgQIARABKAIoAzAN) ![British Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/BA.gif) Fri, Feb 6 - Thu, Feb 12 LHR London ONT Ontario CA $885 Roundtrip found 9 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:LHR,to:ONT,departure:06/02/2026TANYT&leg2=from:ONT,to:LHR,departure:12/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:884.60&airProductToken=AQq0AQoxCMKCARIDNDU4GOuJASCMGCiitYQDMLi2hAM4T0AAWAFqBU5PQkFHcghPTE4wVDFCNAo-CMKCARIEMTUxMxiMGCCjsQEosLeEAzDdvIQDOE9AAVgBagVOT0JBR3IIT0xOMFQxQjR6CgjBggESBDE1MTMKPwjCggESBDI0MzEYo7EBIK6bASjSvoQDMJjAhAM4T0ABWAFqBU5PQkFHcghPTE4wVDFCNHoKCMGCARIEMjQzMQp3CkAIwoIBEgQ2Nzk1GK6bASDvuQEo-4CFAzDMgYUDOE9AAFgBagVOT0JBR3IJT0xYOEMxQjRQegoIwYIBEgQ2Nzk1CjMIwoIBEgMyODgY77kBIOuJASiNgoUDMNuGhQM4T0ABWAFqBU5PQkFHcglPTFg4QzFCNFASCggBEAEYASoCQkEYASIECAEQASgCKAMwDQ) ![KLM](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/KL.gif) Thu, Jun 11 - Sun, Jun 14 LHR London ONT Ontario CA $887 Roundtrip found 7 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:LHR,to:ONT,departure:11/06/2026TANYT&leg2=from:ONT,to:LHR,departure:14/06/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:886.40&airProductToken=AQqAAQo-CMuYARIENjExNhjriQEg8hIo07SPAzDJuY8DOFZAAFgBagVMSUdIVHIIVllIUkQ4TE16CgjEmAESBDYxMTYKPgjLmAESBDY4MTUY8hIgrpsBKIW6jwMw8rqPAzhWQAFYAWoFTElHSFRyCFZZSFJEOExNegoIxJgBEgQ2ODE1CqgBCj4Iy5gBEgQ2ODE1GK6bASDyEiiF3Y8DMPHdjwM4UkAAWAFqBUxJR0hUcghSWUhSRDhMTXoKCMSYARIENjgxNQoxCMuYARIDNjEwGPISIICTASi03o8DMOnijwM4UkABWAFqBUxJR0hUcghSWUhSRDhMTQozCMuYARIEMTAxMRiAkwEg64kBKMPjjwMwk-SPAzhMQAFYAWoFTElHSFRyCFJZSFJEOExNEgoIAhABGAIqAktMGAEiBAgBEAEoAigDKAQwDQ) ![British Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/BA.gif) Fri, Jan 30 - Thu, Feb 5 LHR London ONT Ontario CA $887 Roundtrip found 1 day ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:LHR,to:ONT,departure:30/01/2026TANYT&leg2=from:ONT,to:LHR,departure:05/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:886.70&airProductToken=AQq0AQoxCMKCARIDNDcyGOuJASDBaCjt5YMDMOrmgwM4T0AAWAFqBU5PQkFHcghPS04wVDFCNAo-CMKCARIEMTY0ORjBaCCjsQEoxOeDAzDs7IMDOE9AAVgBagVOT0JBR3IIT0tOMFQxQjR6CgjBggESBDE2NDkKPwjCggESBDI0MzMYo7EBIK6bASj_7YMDMMXvgwM4T0ABWAFqBU5PQkFHcghPS04wVDFCNHoKCMGCARIEMjQzMwqEAQpACMKCARIENTEwNxiumwEgo7EBKIithAMwu66EAzhPQABYAWoFTk9CQUdyCU9MWDhDMUI0UHoKCMGCARIENTEwNwpACMKCARIEMTU4ORijsQEg64kBKK6xhAMwz7WEAzhPQAFYAWoFTk9CQUdyCU9MWDhDMUI0UHoKCMGCARIEMTU4ORIKCAEQARgBKgJCQRgBIgQIARABKAIoAzAN) ![Virgin Atlantic](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/VS.gif) Fri, Jan 30 - Thu, Feb 5 LHR London ONT Ontario CA $935 Roundtrip found 1 day ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:LHR,to:ONT,departure:30/01/2026TANYT&leg2=from:ONT,to:LHR,departure:05/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:934.77&airProductToken=AQqAAQo-CNamARIENDAzNhjriQEgkgEo5OiDAzDV7YMDOFRAAFgBagVMSUdIVHIIT1kzU0pETEF6CgjEmAESBDQwMzYKPgjWpgESBDU0NzAYkgEgrpsBKIHwgwMwpfGDAzhUQAFYAWoFTElHSFRyCE9ZM1NKRExBegoIxJgBEgQ1NDcwCm4KNgjEmAESBDQwNDIYrpsBIJIBKOKthAMwnK-EAzhFQABYAWoJTUFJTkJBU0lDcghWWUhSRDhMTQo0CMSYARICMjAYkgEg64kBKJeyhAMw1raEAzhFQAFYAWoJTUFJTkJBU0lDcghWWUhSRDhMTRIKCAIQARgCKgJWUxgBIgQIARABKAIoAygEMAE) ![Iberia](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/IB.gif) Fri, Jan 30 - Thu, Feb 5 LHR London ONT Ontario CA $939 Roundtrip found 1 day ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:LHR,to:ONT,departure:30/01/2026TANYT&leg2=from:ONT,to:LHR,departure:05/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:938.07&airProductToken=AQqbAQoxCMmEARIDNzI2GOuJASCMGCic7IMDMK3tgwM4T0AAWAFqBUJBU0lDcghPS04wVDFCNAoxCMmEARIDMzYzGIwYIKOxASib7oMDMNLzgwM4T0ABWAFqBUJBU0lDcghPS04wVDFCNAozCMGCARIEMTgyMBijsQEgrpsBKJf1gwMw4PaDAzhCQAFYAWoFQkFTSUNyCE9LTjBUMUI0CnYKMwjBggESBDI2MzUYrpsBIKOxASitsYQDMOOyhAM4QkAAWAFqBUJBU0lDcghPTFg4QzFCNAo_CMGCARIENjk0ORijsQEg64kBKKOzhAMwv7eEAzhPQAFYAWoFQkFTSUNyCE9MWDhDMUI0egoIwoIBEgQ2OTQ5EgoIAhABGAIqAklCGAEiBAgBEAEoAigDKAQwAQ) ## Find the cheapest month to fly from London (LHR) to Ontario (ONT) ### November is typically the cheapest month to fly From CA $701 - CA $1,704 per traveller. ## Alternative airports near Ontario Prices were available within the past 7 days. Prices and availability are subject to change. [](https://www.expedia.ca/Flights-Search?leg1=from:LHR,to:SNA,departure:16/11/2025TANYT&leg2=from:SNA,to:LHR,departure:04/12/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) SNA John Wayne Cheapest 42 min [Flights from CA $1,030](https://www.expedia.ca/Flights-Search?leg1=from:LHR,to:SNA,departure:16/11/2025TANYT&leg2=from:SNA,to:LHR,departure:04/12/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) Flight from London to Ontario (LHR - ONT) route information | Origin airport | Heathrow | | --- | --- | | Destination airport | Los Angeles - Ontario Intl. | | Airlines serving | Air Canada, American Airlines, British Airways, Delta, Iberia, KLM, Virgin Atlantic | | Roundtrip price | CA $805 | | Distance | 8655 km | ## London to Los Angeles Flights **The easy way to book your flights from London to Ontario**  With Expedia, it’s simple to find and book flights to Ontario from London whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are nonstop flights to Los Angeles - Ontario Intl., too.   Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from London to Ontario today, tomorrow, or this week.   **Save dollars with cheap flights from Heathrow, LHR to Los Angeles - Ontario Intl., ONT**  Sort your search results by price to find great deals on your flight from London to Ontario—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Ontario from London currently is just CA $806 rising to CA $939.   Here are more money-saving tips:  - Fly in January when flight prices are normally at their lowest  - Book about a month to 6 weeks before you travel for the best prices to Ontario   - Avoid peak season and weekends when flights can cost more - Early morning and late-night flights are sometimes cheaper, so try varying your travel times  - One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free!  **Reasons to choose Expedia for your flight to Ontario from London**  Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to Ontario with Expedia today. ## Frequently asked questions ### How much is a flight from London Heathrow to Ontario Airport? > If you're travelling between London Heathrow and ONT, round-trip flights start from CA $806. This figure is based on airfares advertised within the last 7 days on Expedia for flights departing within the next year, so don't hang about. Book now and save yourself money and time. Prices and availability are subject to change. Additional terms apply. ### Do I need to pay a cancellation fee if I cancel my flight from LHR to Ontario Airport? > This differs between airlines, as each has its own terms and conditions. Visit the [Customer Service Portal](https://www.expedia.ca/helpcenter), where there are simple instructions on how to cancel your flight online. ### How do I find cheap flights from Heathrow Airport to Ontario Airport that have flexible change policies? > Flights from London Heathrow to Los Angeles - Ontario Intl. Airport (ONT) with flexible change policies are available with many airlines. Simply use our "No change fees" filter while searching. You'll only need to cover the difference in ticket price, with no additional fees to worry about. ### How many hours is the flight from London Heathrow to Los Angeles - Ontario Intl. Airport (ONT)? > Make the 14 hours and 39 minutes between Heathrow Airport (LHR) and Ontario Airport as comfortable as possible. Pack the essentials, like your toothbrush, medication and a neck pillow, and simply enjoy the flight! ### How far is the flight from Heathrow Airport (LHR) to ONT? > You'll have 8,700 kilometres to cover on the long-haul Hounslow to Ontario route. Wear comfortable clothes and consider taking some noise-cancelling headphones and a sleep mask. ### Which airlines fly direct from LHR to Los Angeles - Ontario Intl. Airport (ONT)? > Flying nonstop between Heathrow Airport and Ontario Airport isn't possible right now. However, you'll still be able to find a flight to Ontario with at least one stop. ### Are Heathrow Airport to ONT flight tickets cheaper when they're purchased at the last minute? > Booking your trip from LHR to Ontario Airport at the last minute could save you some serious cash. However, it could end up costing a great deal more! If you'd rather avoid the risk, book well ahead of your departure date. In fact, Expedia has some of the best bargains as far ahead as 12 months in advance. If your preferred carrier hasn't released tickets yet, check back often as deals are updated all the time on Expedia. ## Explore a world of travel with Expedia - Flights ### Flights - [Flights from Bamfield to Ontario](https://www.expedia.ca/lp/flights/10552/2680/bamfield-to-ontario) - [Flights from Revelstoke to Ontario](https://www.expedia.ca/lp/flights/10607/2680/revelstoke-to-ontario) - [Flights from Dutch Harbor to Ontario](https://www.expedia.ca/lp/flights/1075/2680/dutch-harbor-to-ontario) - [Flights from Devils Lake to Ontario](https://www.expedia.ca/lp/flights/1076/2680/devils-lake-to-ontario) - [Flights from Heraklion to Ontario](https://www.expedia.ca/lp/flights/1444/2680/heraklion-to-ontario) - [Flights from Harbin to Ontario](https://www.expedia.ca/lp/flights/1510/2680/harbin-to-ontario) - [Flights from Jamestown to Ontario](https://www.expedia.ca/lp/flights/1709/2680/jamestown-to-ontario) - [Flights from Tramore to Ontario](https://www.expedia.ca/lp/flights/177969/2680/tramore-to-ontario) - [Flights from Athens to Ontario](https://www.expedia.ca/lp/flights/178231/2680/athens-to-ontario) - [Flights from Boston to Rancho Cucamonga](https://www.expedia.ca/lp/flights/178239/7732/boston-to-rancho-cucamonga) - [Flights from Calgary to Rancho Cucamonga](https://www.expedia.ca/lp/flights/178245/7732/calgary-to-rancho-cucamonga) - [Flights from Denver to Rancho Cucamonga](https://www.expedia.ca/lp/flights/178254/7732/denver-to-rancho-cucamonga) - [Flights from Detroit to Ontario](https://www.expedia.ca/lp/flights/178255/2680/detroit-to-ontario) - [Flights from Dublin to Ontario](https://www.expedia.ca/lp/flights/178256/2680/dublin-to-ontario) - [Flights from Montreal to Ontario](https://www.expedia.ca/lp/flights/178288/2680/montreal-to-ontario) - [Flights from Montreal to Rancho Cucamonga](https://www.expedia.ca/lp/flights/178288/7732/montreal-to-rancho-cucamonga) - [Flights from Moscow to Ontario](https://www.expedia.ca/lp/flights/178289/2680/moscow-to-ontario) - [Flights from Philadelphia to Ontario](https://www.expedia.ca/lp/flights/178297/2680/philadelphia-to-ontario) - [Flights from San Francisco to Rancho Cucamonga](https://www.expedia.ca/lp/flights/178305/7732/san-francisco-to-rancho-cucamonga) - [Flights from Stockholm to Ontario](https://www.expedia.ca/lp/flights/178311/2680/stockholm-to-ontario) - [Flights from Vienna to Ontario](https://www.expedia.ca/lp/flights/178316/2680/vienna-to-ontario) - [Flights from Kemi to Ontario](https://www.expedia.ca/lp/flights/1786/2680/kemi-to-ontario) - [Flights from Paris to Ontario](https://www.expedia.ca/lp/flights/179898/2680/paris-to-ontario) - [Flights from Geneva to Ontario](https://www.expedia.ca/lp/flights/180003/2680/geneva-to-ontario) - [Flights from Jackson to Ontario](https://www.expedia.ca/lp/flights/180006/2680/jackson-to-ontario) - [Flights from St. Petersburg to Ontario](https://www.expedia.ca/lp/flights/180029/2680/st-petersburg-to-ontario) - [Flights from Kingston to Ontario](https://www.expedia.ca/lp/flights/180034/2680/kingston-to-ontario) - [Flights from Missoula to Ontario](https://www.expedia.ca/lp/flights/180035/2680/missoula-to-ontario) - [Flights from Kathmandu to Ontario](https://www.expedia.ca/lp/flights/1938/2680/kathmandu-to-ontario) - [Flights from Ketchikan to Ontario](https://www.expedia.ca/lp/flights/1939/2680/ketchikan-to-ontario) - [Flights from North Platte to Ontario](https://www.expedia.ca/lp/flights/2017/2680/north-platte-to-ontario) - [Flights from Lebanon to Ontario](https://www.expedia.ca/lp/flights/2041/2680/lebanon-to-ontario) - [Flights from Lisbon to Ontario](https://www.expedia.ca/lp/flights/2080/2680/lisbon-to-ontario) - [Flights from Luton to Ontario](https://www.expedia.ca/lp/flights/2151/2680/luton-to-ontario) - [Flights from Ely to Ontario](https://www.expedia.ca/lp/flights/2191/2680/ely-to-ontario) - [Flights from McAllen to Ontario](https://www.expedia.ca/lp/flights/2270/2680/mcallen-to-ontario) - [Flights from Minto to Ontario](https://www.expedia.ca/lp/flights/2379/2680/minto-to-ontario) - [Flights from Minot to Ontario](https://www.expedia.ca/lp/flights/2392/2680/minot-to-ontario) - [Flights from Massena to Ontario](https://www.expedia.ca/lp/flights/2429/2680/massena-to-ontario) - [Flights from Montería to Ontario](https://www.expedia.ca/lp/flights/2444/2680/monteria-to-ontario) - [Flights from Qiqihar to Ontario](https://www.expedia.ca/lp/flights/2537/2680/qiqihar-to-ontario) - [Flights from Napier to Ontario](https://www.expedia.ca/lp/flights/2593/2680/napier-to-ontario) - [Flights from Odesa to Ontario](https://www.expedia.ca/lp/flights/2639/2680/odesa-to-ontario) - [Flights from Oxnard to Ontario](https://www.expedia.ca/lp/flights/2725/2680/oxnard-to-ontario) - [Flights from Plattsburgh to Ontario](https://www.expedia.ca/lp/flights/2816/2680/plattsburgh-to-ontario) - [Flights from Presque Isle to Ontario](https://www.expedia.ca/lp/flights/2868/2680/presque-isle-to-ontario) - [Flights from Pasco to Ontario](https://www.expedia.ca/lp/flights/2878/2680/pasco-to-ontario) - [Flights from Pevek to Ontario](https://www.expedia.ca/lp/flights/2915/2680/pevek-to-ontario) - [Flights from Ribeirao Preto to Ontario](https://www.expedia.ca/lp/flights/2940/2680/ribeirao-preto-to-ontario) - [Flights from Białe Błota to Ontario](https://www.expedia.ca/lp/flights/3000023154/2680/biale-blota-to-ontario) - [Flights from Dexter to Ontario](https://www.expedia.ca/lp/flights/3000448346/2680/dexter-to-ontario) - [Flights from Singapore to Ontario](https://www.expedia.ca/lp/flights/3168/2680/singapore-to-ontario) - [Flights from Wroclaw to Ontario](https://www.expedia.ca/lp/flights/3820/2680/wroclaw-to-ontario) - [Flights from West Yellowstone to Ontario](https://www.expedia.ca/lp/flights/3846/2680/west-yellowstone-to-ontario) - [Flights from Dauphin to Ontario](https://www.expedia.ca/lp/flights/3923/2680/dauphin-to-ontario) - [Flights from Kelowna to Ontario](https://www.expedia.ca/lp/flights/3997/2680/kelowna-to-ontario) - [Flights from Powell River to Ontario](https://www.expedia.ca/lp/flights/4040/2680/powell-river-to-ontario) - [Flights from Deer Lake to Ontario](https://www.expedia.ca/lp/flights/4107/2680/deer-lake-to-ontario) - [Flights from Medicine Hat to Ontario](https://www.expedia.ca/lp/flights/4118/2680/medicine-hat-to-ontario) - [Flights from Manzanillo to Ontario](https://www.expedia.ca/lp/flights/4182/2680/manzanillo-to-ontario) - [Flights from Newman to Ontario](https://www.expedia.ca/lp/flights/4185/2680/newman-to-ontario) - [Flights from Aurillac to Ontario](https://www.expedia.ca/lp/flights/459/2680/aurillac-to-ontario) - [Flights from Tamworth to Ontario](https://www.expedia.ca/lp/flights/553248635974700101/2680/tamworth-to-ontario) - [Flights from Jamaica to Ontario](https://www.expedia.ca/lp/flights/55766/2680/jamaica-to-ontario) - [Flights from Fort St. John to Ontario](https://www.expedia.ca/lp/flights/57378/2680/fort-st-john-to-ontario) - [Flights from Myrtle Beach to Ontario](https://www.expedia.ca/lp/flights/601685/2680/myrtle-beach-to-ontario) - [Flights from Oakland to Ontario](https://www.expedia.ca/lp/flights/601762/2680/oakland-to-ontario) - [Flights from Krabi to Ontario](https://www.expedia.ca/lp/flights/602231/2680/krabi-to-ontario) - [Flights from Worcester to Ontario](https://www.expedia.ca/lp/flights/6023336/2680/worcester-to-ontario) - [Flights from Scranton to Ontario](https://www.expedia.ca/lp/flights/6023532/2680/scranton-to-ontario) - [Flights from St.-Pierre to Ontario](https://www.expedia.ca/lp/flights/6024035/2680/st-pierre-to-ontario) - [Flights from Norfolk - Virginia Beach to Ontario](https://www.expedia.ca/lp/flights/602904/2680/norfolk-virginia-beach-to-ontario) - [Flights from Louisville to Ontario](https://www.expedia.ca/lp/flights/603002/2680/louisville-to-ontario) - [Flights from Swanton to Ontario](https://www.expedia.ca/lp/flights/6048172/2680/swanton-to-ontario) - [Flights from Incheon to Ontario](https://www.expedia.ca/lp/flights/6049715/2680/incheon-to-ontario) - [Flights from Colombier-Saugnieu to Ontario](https://www.expedia.ca/lp/flights/6050113/2680/colombier-saugnieu-to-ontario) - [Flights from Show Low to Ontario](https://www.expedia.ca/lp/flights/6054779/2680/show-low-to-ontario) - [Flights from Salisbury to Ontario](https://www.expedia.ca/lp/flights/6057491/2680/salisbury-to-ontario) - [Flights from Castlegar to Ontario](https://www.expedia.ca/lp/flights/6058314/2680/castlegar-to-ontario) - [Flights from Topeka to Ontario](https://www.expedia.ca/lp/flights/6058365/2680/topeka-to-ontario) - [Flights from Chilliwack to Ontario](https://www.expedia.ca/lp/flights/6058408/2680/chilliwack-to-ontario) - [Flights from Lumberton to Ontario](https://www.expedia.ca/lp/flights/6058436/2680/lumberton-to-ontario) - [Flights from Brainerd to Ontario](https://www.expedia.ca/lp/flights/6059985/2680/brainerd-to-ontario) - [Flights from Sacheon to Ontario](https://www.expedia.ca/lp/flights/6084629/2680/sacheon-to-ontario) - [Flights from Oita to Ontario](https://www.expedia.ca/lp/flights/6128402/2680/oita-to-ontario) - [Flights from Winnipeg to Rancho Cucamonga](https://www.expedia.ca/lp/flights/6141041/7732/winnipeg-to-rancho-cucamonga) - [Flights from Lyon to Ontario](https://www.expedia.ca/lp/flights/6180797/2680/lyon-to-ontario) - [Flights from Santa Cruz to Ontario](https://www.expedia.ca/lp/flights/6666/2680/santa-cruz-to-ontario) - [Flights from Beaumont to Ontario](https://www.expedia.ca/lp/flights/667/2680/beaumont-to-ontario) - [Flights from Gypsum to Ontario](https://www.expedia.ca/lp/flights/7367/2680/gypsum-to-ontario) - [Flights from Greeley to Ontario](https://www.expedia.ca/lp/flights/7545/2680/greeley-to-ontario) - [Flights from Cortez to Ontario](https://www.expedia.ca/lp/flights/810/2680/cortez-to-ontario) - [Flights from Karlovy Vary to Ontario](https://www.expedia.ca/lp/flights/8307/2680/karlovy-vary-to-ontario) - [Flights from Calama to Ontario](https://www.expedia.ca/lp/flights/847/2680/calama-to-ontario) - [Flights from Ogden to Ontario](https://www.expedia.ca/lp/flights/9180/2680/ogden-to-ontario) - [Flights from Okushiri to Ontario](https://www.expedia.ca/lp/flights/9189/2680/okushiri-to-ontario) - [Flights from Cusco to Ontario](https://www.expedia.ca/lp/flights/941/2680/cusco-to-ontario) - [Flights from Warrenton to Ontario](https://www.expedia.ca/lp/flights/9768/2680/warrenton-to-ontario) - [Flights from Scottsdale to Ontario](https://www.expedia.ca/lp/flights/9829/2680/scottsdale-to-ontario) - [Flights from Toronto (YYZ) to Los Angeles (LAX)](https://www.expedia.ca/lp/flights/yyz/lax/toronto-to-los-angeles) \*Available to Expedia members.