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Cheap flights from London Heathrow Airport to Ontario from £352

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 26/1. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — ONT
22 Dec — 29 Dec1
1 adult

Cheap flight deals from Heathrow to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 17 December 2024.

Round-trip from

£447

One-way from

£352

Popular in

August

Cheapest in

February

Average price

£595
Iberia
  • Iberia
  • 25/2-4/3
  • 3 total stops
  • 49h 41m total
  • London to Ontario
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26/1
  • 26/1
  • 2 total stops
  • 24h 21m total
  • London to Ontario
Search Deals
High demand for flights, 8% potential price rise
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Best time to find cheap flights, 4% potential price drop
Search Deals
Average for round-trip flights in December 2024
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Find flight deals from Heathrow to Ontario

Cheapest flights from Heathrow to Ontario
Explore the most affordable flight options available from Heathrow to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 December 2024.

Tue 31/1210:45LHR - ONT
1 stop19h 52mVirgin Atlantic
Wed 8/113:21ONT - LHR
1 stop12h 39mVirgin Atlantic
Deal found 16/12£575
Mon 30/1210:05LHR - ONT
1 stop15h 48mUnited Airlines
Tue 7/106:00ONT - LHR
1 stop17h 30mUnited Airlines
Deal found 16/12£639
Tue 31/1209:20LHR - ONT
1 stop21h 09mLufthansa
Mon 6/113:57ONT - LHR
1 stop33h 28mLufthansa
Deal found 17/12£688
Wed 25/1210:50LHR - ONT
1 stop16h 51mKLM
Thu 23/113:00ONT - LHR
1 stop13h 35mKLM
Deal found 16/12£704
Fri 27/1211:50LHR - ONT
1 stop16h 47mFinnair
Thu 16/110:56ONT - LHR
1 stop13h 19mFinnair
Deal found 17/12£735
Sat 28/1214:30LHR - ONT
1 stop15h 32mBritish Airways
Tue 21/106:00ONT - LHR
1 stop16h 20mBritish Airways
Deal found 16/12£754
Fri 27/1209:20LHR - ONT
1 stop20h 54mMultiple Airlines
Tue 21/113:43ONT - LHR
2 stops33h 27mMultiple Airlines
Deal found 16/12£777
Sat 28/1213:50LHR - ONT
1 stop15h 07mIberia
Fri 28/214:54ONT - LHR
1 stop13h 10mIberia
Deal found 16/12£793
Mon 23/1210:50LHR - ONT
1 stop16h 51mDelta
Sat 11/107:05ONT - LHR
1 stop15h 15mDelta
Deal found 16/12£1,104
Tue 24/1218:00LHR - ONT
2 stops26h 40mAir Canada
Mon 6/106:00ONT - LHR
2 stops21h 50mAir Canada
Deal found 16/12£1,609
Mon 30/1221:40LHR - ONT
2 stops31h 20mAvianca
Tue 7/122:30ONT - LHR
2 stops32h 05mAvianca
Deal found 17/12£2,412
Mon 16/1214:30LHR - ONT
1 stop15h 33mAmerican Airlines
Fri 20/1216:25ONT - LHR
1 stop12h 55mAmerican Airlines
Deal found 16/12£2,661

Find flights from Heathrow to Ontario within your budget

Customise your flight search to find flights from Heathrow to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 17 December 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Tue 25/2

16:15-18:35

2 stops34h 20m

Ontario

Tue 4/3

06:59-06:20

1 stop15h 21m

£447

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Mon 13/1

08:30-21:57

2 stops21h 27m

Ontario

Mon 27/1

10:47-09:20

2 stops38h 33m

£465

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Tue 25/2

09:30-21:59

2 stops20h 29m

Ontario

Tue 4/3

06:00-09:40

2 stops19h 40m

£468

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Mon 13/1

08:30-20:29

2 stops19h 59m

Ontario

Mon 27/1

06:15-07:25

1 stop17h 10m

£476

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Tue 14/1

10:45-23:53

1 stop21h 08m

Ontario

Tue 21/1

13:21-10:00

1 stop12h 39m

£487

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 15/1

15:50-22:32

1 stop14h 42m

Ontario

Wed 22/1

13:00-10:35

1 stop13h 35m

£488

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Tue 14/1

10:40-18:37

1 stop15h 57m

Ontario

Tue 21/1

16:25-13:20

1 stop12h 55m

£502

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Mon 13/1

10:50-22:52

1 stop20h 02m

Ontario

Mon 27/1

06:00-10:00

1 stop20h 00m

£509

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Tue 18/2

15:00-20:52

2 stops37h 52m

Ontario

Tue 11/3

05:05-07:10

2 stops19h 05m

£510

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Sun 2/3

13:50-22:16

1 stop16h 26m

Ontario

Fri 21/3

10:57-08:15

1 stop14h 18m

£551

Flights are sorted by cheapest return flights first.

Deals found on 16/12

Showing 1-10 of 25 results
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Best time to book a flight from Heathrow to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Heathrow with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Heathrow to Ontario

Get recent, data-driven insights about flights from Heathrow to Ontario including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from London Heathrow Airport to Ontario?

Use this chart to determine the optimal time to book a return flight from Heathrow to Ontario. Price data was last updated on 13 December 2024.

To ensure you get the cheapest price possible for a flight from London Heathrow Airport to Ontario, you should look to book at least 31 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from London Heathrow Airport to Ontario?

Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to Ontario (average of £514). Flying from London Heathrow Airport to Ontario in August is currently the most expensive (average of £827). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from LHR to ONT?

Find hourly flight availability from Heathrow to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 17 December 2024.

It’s optimal to fly from London Heathrow Airport to Ontario in the afternoon. By choosing this option you can save up to 24% on the cost of your flight, compared to a flight at midday.

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ontario ranges from 3.0 - 86.0 inches per month. February is typically the wettest month, when rainfall can reach 86.0 mm. June is typically the driest time to visit Ontario when rainfall is around 3.0 mm.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 26.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 12.0 C).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated 17 December 2024.
Read through reviews of airlines operating flights from London to Ontario, such as Lufthansa, KLM and Finnair. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
China Airlines
8.3
Very Good
755 reviews
Check prices

Crew

8.6

Entertainment

8.0

Boarding

8.3

Comfort

8.0

Overall

8.3

Food

7.8

Reviews

1 / 10

Had a beer dropped in my lap which was a total accident, what I want impressed with was the fact that I had to ask for a towel to clean up my leg and the ground. From Taipei to Seattle

China Airlines
8.3
Very Good
755 reviews
China Airlines
8.3
Very Good
755 reviews
Check prices

Crew

8.6

Entertainment

8.0

Boarding

8.3

Comfort

8.0

Overall

8.3

Food

7.8

Reviews

1 / 10

Had a beer dropped in my lap which was a total accident, what I want impressed with was the fact that I had to ask for a towel to clean up my leg and the ground. From Taipei to Seattle

Delta
8.0
Very Good
8,615 reviews
China Airlines
8.3
Very Good
755 reviews
Check prices

Crew

8.6

Entertainment

8.0

Boarding

8.3

Comfort

8.0

Overall

8.3

Food

7.8

Reviews

1 / 10

Had a beer dropped in my lap which was a total accident, what I want impressed with was the fact that I had to ask for a towel to clean up my leg and the ground. From Taipei to Seattle

KLM
7.8
Good
1,351 reviews
China Airlines
8.3
Very Good
755 reviews
Check prices

Crew

8.6

Entertainment

8.0

Boarding

8.3

Comfort

8.0

Overall

8.3

Food

7.8

Reviews

1 / 10

Had a beer dropped in my lap which was a total accident, what I want impressed with was the fact that I had to ask for a towel to clean up my leg and the ground. From Taipei to Seattle

Finnair
7.7
Good
1,287 reviews
China Airlines
8.3
Very Good
755 reviews
Check prices

Crew

8.6

Entertainment

8.0

Boarding

8.3

Comfort

8.0

Overall

8.3

Food

7.8

Reviews

1 / 10

Had a beer dropped in my lap which was a total accident, what I want impressed with was the fact that I had to ask for a towel to clean up my leg and the ground. From Taipei to Seattle

Virgin Atlantic
7.5
Good
667 reviews
China Airlines
8.3
Very Good
755 reviews
Check prices

Crew

8.6

Entertainment

8.0

Boarding

8.3

Comfort

8.0

Overall

8.3

Food

7.8

Reviews

1 / 10

Had a beer dropped in my lap which was a total accident, what I want impressed with was the fact that I had to ask for a towel to clean up my leg and the ground. From Taipei to Seattle

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Ontario from London Heathrow?

    If you book a flight to Ontario from London Heathrow, you will be flying to Ontario, which is the city’s only airport. Ontario (ONT) is located 3.1 mi from the center of Ontario. There are 0 flights from London Heathrow to Ontario per day from 5 different airlines.

  • What are the cheapest airlines flying from London Heathrow Airport to Ontario round-trip?

    Currently priced at £447, Iberia will fly you from London Heathrow Airport to Ontario and back. In addition to Iberia, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Lufthansa and United Airlines - these airlines can fly you to your destination from £468 and £476, respectively. Users have found that Iberia is 23% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from London Heathrow Airport to Ontario one-way?

    To fly one-way, consider booking your trip with Lufthansa, which is currently one of the cheapest options available, starting at £510. British Airways flights start at £592 while deals on Finnair start at £619 one-way.

  • Can I find deals for flights from Heathrow to Ontario that include hotel bookings?

    Yes. In addition to deals on Heathrow to Ontario flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Heathrow to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Ontario.

  • Can I find deals for business class flights from Heathrow to Ontario?

    Yes. Cheapflights offers flight deals from Heathrow to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from London Heathrow Airport to Ontario?

    Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to Ontario (average of £514). Flying from London Heathrow Airport to Ontario in August is currently the most expensive (average of £827). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Heathrow to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Heathrow to Ontario

Discover the top 5 airlines that operate flights from Heathrow to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 17 December 2024.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest£393Average£544FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
British AirwaysCheapest£431Average£640FlexibilityNo cancel feeOn-time70%
Search British Airways flights
FinnairCheapest£433Average£519FlexibilityNo cancel feeOn-time76%
Search Finnair flights
LufthansaCheapest£479Average£546FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£531Average£743FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Heathrow to Ontario?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Heathrow to Ontario. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Ontario?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Heathrow to Ontario for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Heathrow to Ontario with no change fees?

Yes! Cheapflights helps users easily find flights from Heathrow to Ontario with no change fees.

Can Cheapflights notify me if prices for flights from Heathrow to Ontario become cheaper?

Yes, Cheapflights offers price alerts on Heathrow to Ontario flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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