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$366+ Cheap flights from Ontario (ONT) to Heathrow (LHR)

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 9/22. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — LHR
Jul 30 — Aug 61
From?
To?
Tue 7/30
Tue 8/6
1 adult, Economy
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The best prices from Ontario to London Heathrow are usually found in April or December, booked 52 days in advance, depart on a Tuesday or Sunday and return on a Tuesday

Cheap flight deals from Ontario to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Heathrow (LHR). 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 July 25, 2024.

Popular in

July

Cheapest in

April

Round-trip from

$583
(oojo)

One-way from

$366
(Netflights)
High demand for flights, 34% potential price rise
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Best time to find cheap flights, 16% potential price drop
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From Ontario to London Heathrow
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One-way flight from Ontario to London Heathrow
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What is the cheapest day to fly round-trip from Ontario to London Heathrow Airport?

Sunday flights are generally found to be more expensive for flights from Ontario to London Heathrow Airport. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to London Heathrow Airport.

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

Find a great deal and save up to 29% by booking at least 15 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Ontario to London Heathrow Airport within the next two weeks, with the cheapest ticket starting at $714.

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

Due to multiple factors, expect to potentially pay more when booking in June. For low rates, October can be a great choice for travel to London Heathrow Airport. Flights to London Heathrow Airport from Ontario in October are about $708 on average during October, but can be found for as low as $398.

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

It’s typically best to fly out from Ontario to London Heathrow Airport in the morning. Doing so could potentially save you 29% on the flight price compared to flying in the evening, which is usually more expensive.

Cheap Ontario to Heathrow flights in July & August 2024

Find cheap flight options from Ontario to Heathrow specifically for the months of July and August 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,752,877 searches. Prices were last updated on July 25, 2024.
Listed are some of the best fares we've found on flights departing from Ontario to London in 2024. For more flight deals, be sure to check back very soon.
This CheapOair deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/215:05 amONT - LHR
2 stops20h 55mAir Canada
Fri 9/139:30 amLHR - ONT
2 stops43h 32mAir Canada
Deal found 7/25$622
This CheapOair deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/116:25 pmONT - LHR
2 stops28h 05mAir Canada
Fri 10/49:30 amLHR - ONT
2 stops39h 47mAir Canada
Deal found 7/25$627
This United Airlines deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/121:30 pmONT - LHR
1 stop12h 55mUnited Airlines
Tue 9/310:25 amLHR - ONT
1 stop15h 31mUnited Airlines
Deal found 7/25$635
This American Airlines deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/114:45 pmONT - LHR
1 stop12h 50mAmerican Airlines
Tue 8/279:45 amLHR - ONT
1 stop14h 23mAmerican Airlines
Deal found 7/25$636
This Delta deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/117:00 amONT - LHR
1 stop18h 50mDelta
Fri 10/411:45 amLHR - ONT
2 stops20h 04mDelta
Deal found 7/25$639
This KLM deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/211:24 pmONT - LHR
1 stop12h 36mKLM
Wed 8/2811:00 amLHR - ONT
1 stop13h 17mKLM
Deal found 7/25$644
This Gotogate deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1210:46 amONT - LHR
1 stop13h 19mBritish Airways
Tue 9/39:00 pmLHR - ONT
2 stops31h 02mBritish Airways
Deal found 7/25$650
This KAYAK deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/242:38 pmONT - LHR
1 stop31h 47mBritish Airways
Wed 9/412:00 pmLHR - ONT
1 stop16h 02mBritish Airways
Deal found 7/25$677
This Expedia deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2210:46 amONT - LHR
1 stop13h 19mIberia
Thu 8/2910:50 amLHR - ONT
2 stops19h 37mIberia
Deal found 7/25$679

Ontario to Heathrow 2024 flight deals

Discover exclusive flight deals for travel between Ontario and Heathrow in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,752,877 searches. Data last updated July 25, 2024.
Listed are some of the best fares we've found on flights departing from Ontario to London in 2024. For more flight deals, be sure to check back very soon.
This Air Canada deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/85:15 amONT - LHR
2 stops17h 15mAir Canada
Tue 10/222:10 pmLHR - ONT
2 stops40h 46mAir Canada
Deal found 7/25$591
This United Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2910:35 amONT - LHR
1 stop18h 25mUnited Airlines
Wed 11/63:00 pmLHR - ONT
2 stops34h 43mUnited Airlines
Deal found 7/24$596
This Delta deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/301:28 pmONT - LHR
1 stop13h 32mDelta
Wed 11/66:20 amLHR - ONT
2 stops22h 50mDelta
Deal found 7/25$606
This KLM deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1511:29 amONT - LHR
1 stop19h 21mKLM
Tue 10/296:30 amLHR - ONT
2 stops17h 35mKLM
Deal found 7/25$608
This Delta deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/56:00 amONT - LHR
2 stops17h 55mDelta
Tue 11/266:20 amLHR - ONT
2 stops18h 48mDelta
Deal found 7/25$610
This British Airways deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/158:10 amONT - LHR
1 stop15h 50mBritish Airways
Tue 10/298:20 amLHR - ONT
1 stop16h 28mBritish Airways
Deal found 7/25$612
This Air Canada deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/167:18 amONT - LHR
2 stops18h 42mMultiple Airlines
Tue 10/2210:15 amLHR - ONT
2 stops20h 41mMultiple Airlines
Deal found 7/25$613
This Orbitz deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/411:59 pmONT - LHR
1 stop22h 21mBritish Airways
Mon 11/185:20 pmLHR - ONT
2 stops32h 28mBritish Airways
Deal found 7/25$616
This oojo deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/105:05 amONT - LHR
2 stops17h 30mAir Canada
Tue 9/242:10 pmLHR - ONT
2 stops18h 35mAir Canada
Deal found 7/24$617

Ontario to Heathrow flights leaving soon

Find last-minute flight options from Ontario to Heathrow 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 2,752,877 searches. Data last updated July 25, 2024.
Have a look at some of the flights available from Ontario to London departing last-minute. Tip: verify your flight details before completing your reservation.
This United Airlines deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/11:45 pmONT - LHR
1 stop12h 40mUnited Airlines
Thu 8/2210:25 amLHR - ONT
1 stop15h 31mUnited Airlines
Deal found 7/25$725
This United Airlines deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/11:45 pmONT - LHR
2 stops14h 35mUnited Airlines
Thu 8/224:15 pmLHR - ONT
1 stop16h 30mUnited Airlines
Deal found 7/25$826
This United Airlines deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/11:45 pmONT - LHR
1 stop12h 40mUnited Airlines
Fri 8/301:40 pmLHR - ONT
1 stop15h 51mUnited Airlines
Deal found 7/25$850
This KLM deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/311:21 pmONT - LHR
1 stop12h 39mKLM
Thu 8/2910:55 amLHR - ONT
1 stop13h 22mKLM
Deal found 7/25$966
This United Airlines deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/311:45 pmONT - LHR
2 stops14h 35mUnited Airlines
Mon 9/211:05 amLHR - ONT
1 stop14h 17mUnited Airlines
Deal found 7/25$1,006
This United Airlines deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/311:45 pmONT - LHR
1 stop12h 40mUnited Airlines
Wed 8/2110:25 amLHR - ONT
1 stop15h 31mUnited Airlines
Deal found 7/25$1,018
This Iberia deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/410:48 amONT - LHR
1 stop13h 12mIberia
Thu 8/1512:00 pmLHR - ONT
1 stop14h 48mIberia
Deal found 7/24$1,095
This Iberia deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/410:48 amONT - LHR
1 stop13h 12mIberia
Sat 8/1712:00 pmLHR - ONT
1 stop14h 48mIberia
Deal found 7/24$1,096
This KAYAK deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/110:48 amONT - LHR
1 stop19h 37mIberia
Thu 8/158:40 amLHR - ONT
1 stop18h 08mIberia
Deal found 7/25$1,145

One-way flights to Heathrow from Ontario

Search for one-way flight options from Ontario to Heathrow. 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 2,752,877 searches. Data last updated July 25, 2024.
Users in need of a one-way flight from Ontario to London can choose from these deals. Users in need of a round-trip flight from Ontario to London instead should update the search form at the top of page.
This Netflights deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Netflights is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/225:35 pmONT - LHR
1 stop13h 15mVirgin Atlantic
Deal found 7/24$366
This oojo deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/255:05 amONT - LHR
2 stops17h 30mAir Canada
Deal found 7/25$372
This United Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/76:00 amONT - LHR
1 stop17h 25mUnited Airlines
Deal found 7/24$376
This United Airlines deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/251:35 pmONT - LHR
1 stop14h 45mUnited Airlines
Deal found 7/25$377
This United Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/226:20 amONT - LHR
1 stop20h 05mUnited Airlines
Deal found 7/24$381
This Delta deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/225:35 pmONT - LHR
1 stop13h 15mDelta
Deal found 7/24$382
This United Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/126:20 pmONT - LHR
1 stop31h 20mUnited Airlines
Deal found 7/24$383
This British Airways deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/104:30 pmONT - LHR
1 stop12h 50mBritish Airways
Deal found 7/24$392
This United Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/266:35 pmONT - LHR
1 stop34h 25mUnited Airlines
Deal found 7/24$393

Find flights from Ontario to Heathrow within your budget

Customize your flight search to find flights from Ontario to Heathrow 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 2,752,877 searches. Data last updated July 25, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$583 - $728

Route

Depart

Return

Price

OntarioLondon Heathrow

ONT - LHR

ONTLHR

Ontario

Tue 10/1

2 stops20h 20m

London Heathrow

Tue 10/8

2 stops16h 46m

$583

OntarioLondon Heathrow

ONT - LHR

ONTLHR

Ontario

Wed 9/25

1 stop14h 07m

London Heathrow

Tue 10/15

2 stops30h 15m

$593

OntarioLondon Heathrow

ONT - LHR

ONTLHR

Ontario

Tue 10/29

1 stop18h 25m

London Heathrow

Wed 11/6

2 stops34h 43m

$596

OntarioLondon Heathrow

ONT - LHR

ONTLHR

Ontario

Tue 11/5

1 stop15h 05m

London Heathrow

Tue 11/12

1 stop15h 58m

$604

OntarioLondon Heathrow

ONT - LHR

ONTLHR

Ontario

Tue 11/5

1 stop15h 50m

London Heathrow

Tue 11/26

2 stops18h 48m

$606

OntarioLondon Heathrow

ONT - LHR

ONTLHR

Ontario

Wed 11/20

2 stops15h 35m

London Heathrow

Fri 11/29

2 stops19h 13m

$619

OntarioLondon Heathrow

ONT - LHR

ONTLHR

Ontario

Tue 8/20

1 stop15h 47m

London Heathrow

Tue 8/27

2 stops19h 37m

$626

OntarioLondon Heathrow

ONT - LHR

ONTLHR

Ontario

Thu 9/19

1 stop15h 50m

London Heathrow

Mon 9/30

1 stop17h 05m

$712

OntarioLondon Heathrow

ONT - LHR

ONTLHR

Ontario

Sat 9/14

1 stop28h 10m

London Heathrow

Sun 9/29

1 stop31h 38m

$728

Flights are sorted by cheapest first

Deals found on 7/24

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

Use this chart to determine the optimal time to book a round-trip flight from Ontario to Heathrow. Price data was last updated on July 23, 2024.
The price you pay for your flight from Ontario to London Heathrow Airport may vary depending on when you book. For the best chance of a lower fare, look to book 27 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
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What is the cheapest day to fly from Ontario to London Heathrow Airport?

Use this chart to determine the cheapest time to fly round-trip from Ontario to Heathrow. Price data was last updated on July 21, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Ontario to London Heathrow Airport flight should consider departing on Tuesday mornings when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
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Best time to book a flight from Ontario to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Ontario with our price prediction graph.
Estimated round-trip 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 Heathrow by month

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

LON

Temperature

39.2 - 62.6 °F

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. 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 Heathrow. Reviews last updated July 25, 2024.
See what other customers who have flown with British Airways, Delta and Air Canada from Ontario to London have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
9,630 reviews

Boarding

8.2

Entertainment

8.0

Crew

8.6

Food

7.4

Comfort

7.9

Overall

8.0

Reviews

1 / 10

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin

Delta
8.0
Very good
9,630 reviews
Delta
8.0
Very good
9,630 reviews

Boarding

8.2

Entertainment

8.0

Crew

8.6

Food

7.4

Comfort

7.9

Overall

8.0

Reviews

1 / 10

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin

KLM
7.9
Good
1,417 reviews
Delta
8.0
Very good
9,630 reviews

Boarding

8.2

Entertainment

8.0

Crew

8.6

Food

7.4

Comfort

7.9

Overall

8.0

Reviews

1 / 10

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin

JetBlue
7.6
Good
3,996 reviews
Delta
8.0
Very good
9,630 reviews

Boarding

8.2

Entertainment

8.0

Crew

8.6

Food

7.4

Comfort

7.9

Overall

8.0

Reviews

1 / 10

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin

Virgin Atlantic
7.6
Good
705 reviews
Delta
8.0
Very good
9,630 reviews

Boarding

8.2

Entertainment

8.0

Crew

8.6

Food

7.4

Comfort

7.9

Overall

8.0

Reviews

1 / 10

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin

United Airlines
7.4
Good
10,000 reviews
Delta
8.0
Very good
9,630 reviews

Boarding

8.2

Entertainment

8.0

Crew

8.6

Food

7.4

Comfort

7.9

Overall

8.0

Reviews

1 / 10

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin

Related info for your journey

Find useful and relevant information for your journey from Ontario to Heathrow. 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 from for flights from Ontario to London Heathrow?

    If you book a flight to London Heathrow from Ontario, you will be flying from 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 Ontario to London Heathrow per day from 6 different airlines.

  • Can I find flights from Ontario to London Heathrow Airport for under $600 on Cheapflights?

    Yes, there are multiple flights from Ontario to London Heathrow Airport for under $600. The cheapest flight booked recently is on Air Canada for just $583, but on average you can expect to pay $605.

  • Are there last-minute flights available from Ontario to London Heathrow Airport for under $800?

    There are currently 20+ open flights from Ontario to London Heathrow Airport within the next 7 days for less than $800.

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

    According to our current data, Air Canada ($583), British Airways ($593), and United Airlines ($596) offers the cheapest pricing from Ontario to London Heathrow Airport. Air Canada is 22% cheaper than the average price of flights available within the next 90 days to this destination.

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

    To fly one-way, consider booking your trip with Virgin Atlantic, which is currently one of the cheapest options available, starting at $366. Air Canada flights start at $372 while deals on United Airlines start at $376 one-way.

  • What does ONT to LHR mean?

    These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a Ontario Airport to London Heathrow Airport flight would often be abbreviated as a ONT to LHR flight.

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

    The amount of baggage you can bring on your Ontario to Heathrow 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 Ontario to Heathrow with specific airlines?

    Yes, Cheapflights allows you to browse and filter Ontario to Heathrow 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 Ontario to Heathrow that include hotel bookings?

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

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

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

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

    Yes. Cheapflights offers flight deals from Ontario to Heathrow 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 Ontario to Heathrow that allow pets onboard?

    Many airlines flying from Ontario to Heathrow 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 Ontario to Heathrow?

    Yes, you can often find last-minute deals on Ontario to Heathrow 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 Ontario to London Heathrow Airport flight deals updated?

    The Ontario to London Heathrow Airport flight deals you see on this page were last updated on 7/25.

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

    When booking a flight from Ontario to London Heathrow Airport, you may want to consider flying on American Airlines, British Airways or Delta as they are the most popular for this route.

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

    Currently, November is the cheapest month in which you can book a flight from Ontario to London Heathrow Airport (average of $652). Flying from Ontario to London Heathrow Airport in June is currently the most expensive (average of $1,095). 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.

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Top 6 airlines flying from Ontario to Heathrow

Discover the top 6 airlines that operate flights from Ontario to Heathrow. 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 2,752,877 searches. Data last updated July 25, 2024.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest$455Average$633FlexibilityNo cancel feeOn-time72%
DeltaCheapest$482Average$691FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$586Average$829FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$599Average$820FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$626Average$806FlexibilityNo cancel feeOn-time69%
IberiaCheapest$642Average$805FlexibilityNo cancel feeOn-time77%
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