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Cheap flights from London Heathrow Airport to Ontario from £389

This is the cheapest return flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 29/10. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
LHR — ONT
26 Jun — 3 Jul1
1 adult
Wed 26/6
Wed 3/7

The best prices from London Heathrow to Ontario are usually found in November or February, booked 21 days in advance, depart on a Tuesday or Saturday and return on a Monday

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 21 June 2024.

Popular in

August

Cheapest in

November

Average price

£692

Round-trip from

£434
High demand for flights, 32% potential price rise
Best time to find cheap flights, 26% potential price drop
Average for round-trip flights in June 2024
From London Heathrow to Ontario

What is the cheapest day to fly round-trip from London Heathrow Airport to Ontario?

Users have found that leaving on a Monday can be a cost-effective option. It’s possible to save up to 69% on your flight compared to booking on days when demand is much higher.

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

Users have found that booking a flight from London Heathrow Airport to Ontario at least 57 days early can save you up to 13% on average compared to booking a flight this week. If booking 57 days before your flight isn’t an option for you, users have found flights from London Heathrow Airport to Ontario for as little as £503 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as £615 for flights departing within the next 3 days.

What is the cheapest month to fly from London Heathrow Airport to Ontario?

Flights from London Heathrow Airport to Ontario lean towards being more expensive in July. Prices are generally better when you fly from London Heathrow Airport to Ontario in November, with the cheapest ticket starting at £350.

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

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

Cheap Delta flights from Heathrow to Ontario

Explore cheap flight options specifically provided by Delta for the route between Heathrow and Ontario. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 937,175 searches. Data last updated 21 June 2024.
Peruse some of the lowest-priced Delta flights we've found from London to Ontario. Be sure to come back soon if the deals available don't appeal to you at this time.
Wed 3/706:15LHR - ONT
2 stops25h 26mDelta
Mon 15/706:00ONT - LHR
1 stop20h 00mDelta
Deal found 20/6£456
Mon 1/711:35LHR - ONT
1 stop16h 09mDelta
Mon 15/713:21ONT - LHR
1 stop12h 39mDelta
Deal found 20/6£465
Thu 18/712:10LHR - ONT
2 stops19h 49mDelta
Thu 25/706:00ONT - LHR
2 stops17h 15mDelta
Deal found 20/6£644

Cheap Iberia flights from Heathrow to Ontario

Explore cheap flight options specifically provided by Iberia for the route between Heathrow and Ontario. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 937,175 searches. Data last updated 21 June 2024.
Have a look at some of the cheapest available Iberia flights departing from London and landing in Ontario. Make sure to examine the flight information before completing your reservation.
Wed 11/913:05LHR - ONT
1 stop14h 57mIberia
Tue 24/910:51ONT - LHR
1 stop13h 09mIberia
Deal found 19/6£398
Wed 18/913:05LHR - ONT
1 stop14h 57mIberia
Wed 25/910:51ONT - LHR
1 stop13h 09mIberia
Deal found 20/6£399
Mon 9/910:30LHR - ONT
1 stop17h 32mIberia
Mon 23/910:51ONT - LHR
1 stop13h 09mIberia
Deal found 20/6£422
Mon 7/1016:25LHR - ONT
1 stop15h 01mIberia
Thu 13/215:09ONT - LHR
1 stop12h 56mIberia
Deal found 20/6£436
Mon 7/1016:25LHR - ONT
1 stop15h 01mIberia
Sun 16/215:09ONT - LHR
1 stop12h 56mIberia
Deal found 20/6£456
Wed 26/608:40LHR - ONT
1 stop23h 19mIberia
Wed 2/1014:36ONT - LHR
1 stop14h 09mIberia
Deal found 19/6£458
Fri 20/913:05LHR - ONT
1 stop14h 57mIberia
Tue 29/1010:56ONT - LHR
1 stop13h 24mIberia
Deal found 20/6£467
Mon 1/712:00LHR - ONT
1 stop14h 57mIberia
Wed 24/710:48ONT - LHR
1 stop13h 12mIberia
Deal found 20/6£481
Sun 15/913:10LHR - ONT
1 stop16h 59mIberia
Wed 9/1010:50ONT - LHR
1 stop19h 35mIberia
Deal found 20/6£482

Cheap Heathrow to Ontario flights in June & July 2024

Find cheap flight options from Heathrow to Ontario specifically for the months of June and July 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 937,175 searches. Prices were last updated on 21 June 2024.
Scroll through some of the best deals on flights from London to Ontario in 2024. For more flight deals, be sure to check back very soon.
Tue 2/712:00LHR - ONT
1 stop14h 57mBritish Airways
Wed 2/1014:36ONT - LHR
1 stop14h 09mBritish Airways
Deal found 19/6£426
Thu 27/608:40LHR - ONT
1 stop18h 17mBritish Airways
Tue 24/914:36ONT - LHR
1 stop14h 09mBritish Airways
Deal found 19/6£456
Wed 3/706:15LHR - ONT
2 stops25h 26mDelta
Mon 15/706:00ONT - LHR
1 stop20h 00mDelta
Deal found 20/6£456
Wed 26/608:40LHR - ONT
1 stop23h 19mIberia
Wed 2/1014:36ONT - LHR
1 stop14h 09mIberia
Deal found 19/6£458
Wed 26/612:00LHR - ONT
1 stop19h 59mIberia
Wed 2/1012:46ONT - LHR
1 stop15h 59mIberia
Deal found 19/6£459
Tue 2/712:00LHR - ONT
1 stop18h 09mBritish Airways
Thu 18/714:47ONT - LHR
1 stop15h 38mBritish Airways
Deal found 19/6£463
Wed 26/608:40LHR - ONT
1 stop18h 17mBritish Airways
Thu 11/708:10ONT - LHR
1 stop15h 50mBritish Airways
Deal found 19/6£464
Mon 1/711:35LHR - ONT
1 stop16h 09mDelta
Mon 15/713:21ONT - LHR
1 stop12h 39mDelta
Deal found 20/6£465
Mon 1/708:40LHR - ONT
1 stop18h 17mAmerican Airlines
Sun 7/723:59ONT - LHR
1 stop26h 41mAmerican Airlines
Deal found 20/6£466

Heathrow to Ontario 2024 flight deals

Discover exclusive flight deals for travel between Heathrow and Ontario in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 937,175 searches. Data last updated 21 June 2024.
Scroll through some of the best deals on flights from London to Ontario in 2024. For more flight deals, be sure to check back very soon.
Tue 29/1014:25LHR - ONT
1 stop14h 18mBritish Airways
Tue 5/1116:30ONT - LHR
1 stop12h 50mBritish Airways
Deal found 20/6£389
Wed 11/913:05LHR - ONT
1 stop14h 57mIberia
Tue 24/910:51ONT - LHR
1 stop13h 09mIberia
Deal found 19/6£398
Wed 18/913:05LHR - ONT
1 stop14h 57mIberia
Wed 25/910:51ONT - LHR
1 stop13h 09mIberia
Deal found 20/6£399
Mon 11/1109:25LHR - ONT
1 stop16h 23mMultiple Airlines
Sun 17/1112:51ONT - LHR
1 stop15h 14mMultiple Airlines
Deal found 20/6£400
Tue 29/1014:25LHR - ONT
1 stop14h 18mBritish Airways
Tue 12/1116:30ONT - LHR
1 stop12h 50mBritish Airways
Deal found 20/6£402
Wed 11/911:00LHR - ONT
1 stop15h 28mBritish Airways
Tue 24/916:57ONT - LHR
1 stop12h 38mBritish Airways
Deal found 19/6£406
Mon 28/1008:20LHR - ONT
1 stop16h 28mBritish Airways
Mon 4/1115:01ONT - LHR
1 stop13h 04mBritish Airways
Deal found 20/6£415
Thu 12/912:15LHR - ONT
1 stop16h 30mAmerican Airlines
Tue 24/916:57ONT - LHR
1 stop12h 38mAmerican Airlines
Deal found 20/6£418
Thu 19/916:25LHR - ONT
1 stop15h 31mFinnair
Mon 23/910:51ONT - LHR
1 stop13h 09mFinnair
Deal found 20/6£419

Heathrow to Ontario flights leaving soon

Find last-minute flight options from Heathrow to Ontario for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 937,175 searches. Data last updated 21 June 2024.
Have a look at some of the last-minute flights available departing from London to Ontario. It's wise to confirm all flight details are correct before booking.
Thu 27/608:40LHR - ONT
1 stop18h 17mBritish Airways
Mon 23/916:57ONT - LHR
1 stop12h 38mBritish Airways
Deal found 19/6£456
Wed 26/608:40LHR - ONT
1 stop23h 19mIberia
Wed 2/1014:36ONT - LHR
1 stop14h 09mIberia
Deal found 19/6£458
Thu 27/608:40LHR - ONT
1 stop18h 17mBritish Airways
Sat 5/1010:51ONT - LHR
1 stop13h 09mBritish Airways
Deal found 19/6£485
Wed 26/608:40LHR - ONT
1 stop18h 17mIberia
Sun 30/612:49ONT - LHR
1 stop35h 11mIberia
Deal found 19/6£494
Thu 27/611:35LHR - ONT
1 stop19h 25mKLM
Thu 4/714:15ONT - LHR
1 stop16h 35mKLM
Deal found 20/6£495
Wed 26/610:50LHR - ONT
2 stops21h 09mIberia
Wed 2/1014:36ONT - LHR
1 stop14h 09mIberia
Deal found 19/6£500
Thu 27/614:45LHR - ONT
1 stop14h 55mAmerican Airlines
Mon 1/714:44ONT - LHR
1 stop14h 01mAmerican Airlines
Deal found 20/6£501
Thu 27/608:40LHR - ONT
1 stop18h 17mIberia
Sun 22/910:51ONT - LHR
1 stop13h 09mIberia
Deal found 19/6£510
Thu 27/612:15LHR - ONT
1 stop18h 44mAmerican Airlines
Sat 29/622:45ONT - LHR
1 stop24h 55mAmerican Airlines
Deal found 20/6£525

One-way flights to Ontario from Heathrow

Search for one-way flight options from Heathrow to Ontario. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 937,175 searches. Data last updated 21 June 2024.
Users travelling one-way from London to Ontario can select one of these great deals. Users can also find round-trip London to Ontario flights by using the search form above.
Sun 22/916:25LHR - ONT
1 stop15h 31mFinnair
Deal found 20/6£450
Tue 10/907:40LHR - ONT
3 stops34h 27mMultiple Airlines
Deal found 20/6£459
Thu 27/608:40LHR - ONT
1 stop23h 19mIberia
Deal found 20/6£468
Fri 5/710:30LHR - ONT
1 stop16h 20mIberia
Deal found 20/6£476
Thu 4/712:00LHR - ONT
1 stop14h 57mFinnair
Deal found 20/6£495
Mon 1/709:15LHR - ONT
1 stop21h 44mFinnair
Deal found 20/6£570
Wed 11/911:55LHR - ONT
1 stop18h 10mJetBlue
Deal found 20/6£585
Wed 25/911:55LHR - ONT
1 stop18h 10mJetBlue
Deal found 20/6£604
Tue 20/807:40LHR - ONT
3 stops34h 27mMultiple Airlines
Deal found 20/6£613

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 937,175 searches. Data last updated 21 June 2024.

Fly from

Any airport

Fly to

Any airport

Budget

£389 - £523

Route

Depart

Return

Price

London HeathrowOntario

LHR - ONT

LHRONT

London Heathrow

Tue 29/10

1 stop14h 18m

Ontario

Tue 5/11

1 stop12h 50m

£389

London HeathrowOntario

LHR - ONT

LHRONT

London Heathrow

Wed 11/9

1 stop14h 57m

Ontario

Tue 24/9

1 stop13h 09m

£398

London HeathrowOntario

LHR - ONT

LHRONT

London Heathrow

Mon 11/11

1 stop16h 23m

Ontario

Sun 17/11

1 stop15h 14m

£400

London HeathrowOntario

LHR - ONT

LHRONT

London Heathrow

Thu 19/9

1 stop15h 31m

Ontario

Mon 23/9

1 stop13h 09m

£419

London HeathrowOntario

LHR - ONT

LHRONT

London Heathrow

Wed 3/7

2 stops25h 26m

Ontario

Mon 15/7

1 stop20h 00m

£456

London HeathrowOntario

LHR - ONT

LHRONT

London Heathrow

Fri 25/10

1 stop14h 59m

Ontario

Mon 4/11

1 stop13h 04m

£457

London HeathrowOntario

LHR - ONT

LHRONT

London Heathrow

Sun 27/10

1 stop20h 06m

Ontario

Tue 12/11

1 stop20h 00m

£464

London HeathrowOntario

LHR - ONT

LHRONT

London Heathrow

Wed 9/10

1 stop14h 41m

Ontario

Wed 23/10

1 stop12h 10m

£504

London HeathrowOntario

LHR - ONT

LHRONT

London Heathrow

Wed 25/9

2 stops16h 57m

Ontario

Wed 9/10

2 stops17h 15m

£523

Flights are sorted by cheapest first

Deals found on 20/6

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 14 June 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 19 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.
Search Deals

What is the cheapest day to fly from London Heathrow Airport to Ontario?

Use this chart to determine the cheapest time to fly return from Heathrow to Ontario. Price data was last updated on 16 June 2024.
Morning
Midday
Afternoon
Evening
All times are departure.
Travellers seeking maximum savings on their London Heathrow Airport to Ontario flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Monday at midday flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

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.

Temperature and rainfall in Ontario by month

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

LAX

Temperature

14 - 23 °C

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 21 June 2024.
Read through reviews of airlines operating flights from London to Ontario, such as Delta, Iberia and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
8.0
Very Good
10,000 reviews

Boarding

8.2

Comfort

7.9

Entertainment

8.0

Food

7.4

Crew

8.6

Overall

8.0

Reviews

1 / 10

It was weird that we had to check after security and go to a corral which had no bathroom or other services about an hour before boarding. Had to check out of the corral to leave and check back in.

8.0
Very Good
10,000 reviews
8.0
Very Good
10,000 reviews

Boarding

8.2

Comfort

7.9

Entertainment

8.0

Food

7.4

Crew

8.6

Overall

8.0

Reviews

1 / 10

It was weird that we had to check after security and go to a corral which had no bathroom or other services about an hour before boarding. Had to check out of the corral to leave and check back in.

7.9
Good
1,437 reviews
8.0
Very Good
10,000 reviews

Boarding

8.2

Comfort

7.9

Entertainment

8.0

Food

7.4

Crew

8.6

Overall

8.0

Reviews

1 / 10

It was weird that we had to check after security and go to a corral which had no bathroom or other services about an hour before boarding. Had to check out of the corral to leave and check back in.

7.7
Good
1,353 reviews
8.0
Very Good
10,000 reviews

Boarding

8.2

Comfort

7.9

Entertainment

8.0

Food

7.4

Crew

8.6

Overall

8.0

Reviews

1 / 10

It was weird that we had to check after security and go to a corral which had no bathroom or other services about an hour before boarding. Had to check out of the corral to leave and check back in.

7.6
Good
4,213 reviews
8.0
Very Good
10,000 reviews

Boarding

8.2

Comfort

7.9

Entertainment

8.0

Food

7.4

Crew

8.6

Overall

8.0

Reviews

1 / 10

It was weird that we had to check after security and go to a corral which had no bathroom or other services about an hour before boarding. Had to check out of the corral to leave and check back in.

7.6
Good
714 reviews
8.0
Very Good
10,000 reviews

Boarding

8.2

Comfort

7.9

Entertainment

8.0

Food

7.4

Crew

8.6

Overall

8.0

Reviews

1 / 10

It was weird that we had to check after security and go to a corral which had no bathroom or other services about an hour before boarding. Had to check out of the corral to leave and check back in.

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 6 different airlines.

  • Can I find flights from London Heathrow Airport to Ontario for under £400 on Cheapflights?

    Yes, there are multiple flights from London Heathrow Airport to Ontario for under £400. The cheapest flight booked recently is on British Airways for just £389, but on average you can expect to pay £426.

  • Are there last-minute flights available from London Heathrow Airport to Ontario for under £500?

    There are currently 20+ open flights from London Heathrow Airport to Ontario within the next 7 days for less than £500.

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

    Currently priced at £389, British Airways will fly you from London Heathrow Airport to Ontario and back. In addition to British Airways, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Iberia and Finnair - these airlines can fly you to your destination from £398 and £419, respectively. Users have found that British Airways is 33% 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 Finnair, which is currently one of the cheapest options available, starting at £450. Iberia flights start at £468 while deals on JetBlue start at £585 one-way.

  • What does LHR to ONT mean?

    LHR stands for London Heathrow Airport, while ONT stands for Ontario Airport. These codes are often called IATA codes, a set of identifiers established by IATA (International Air Transport Association) that is widely used by airlines and the aviation industry.

  • Can I find deals for flights from Heathrow to Ontario that include extra baggage allowance?

    The amount of baggage you can bring on your Heathrow to Ontario flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Heathrow to Ontario with specific airlines?

    Yes, Cheapflights allows you to browse and filter Heathrow to Ontario flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • 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.

  • Can I find deals for flights from Heathrow to Ontario that allow pets onboard?

    Many airlines flying from Heathrow to Ontario offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Heathrow to Ontario?

    Yes, you can often find last-minute deals on Heathrow to Ontario flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the London Heathrow Airport to Ontario flight deals updated?

    The London Heathrow Airport to Ontario flight deals you see on this page were last updated on 20/6.

  • What are the most popular airlines that fly from London Heathrow Airport to Ontario?

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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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.

Top 6 airlines flying from Heathrow to Ontario

Discover the top 6 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 937,175 searches. Data last updated 21 June 2024.