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

Flying on United Airlines is currently your cheapest option to Ontario, with prices starting at $505. Additional round-trip tickets that might be worth considering are offered by KLM and Lufthansa, with the lowest prices starting at $515 and $523, respectively. These flights start at 30% lower than the current average price 3 months from now.

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

To fly one-way, consider booking your trip with Iberia, which is currently one of the cheapest options available, starting at $582. Lufthansa flights start at $602 while deals on Finnair start at $619 one-way.

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

Travelers 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 mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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

Sunday flights are found to be more expensive to fly from London Heathrow Airport to Ontario. 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 Ontario.

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

Find a great deal and save up to 20% by booking at least 58 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 London Heathrow Airport to Ontario within the next two weeks, with the cheapest ticket starting at $619.

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

September is one of the best times of the year to fly to Ontario from London Heathrow Airport. Prices for September average $675 per person but you can even find prices for as low as $369. The most expensive prices can be found in the month of August. Opting for a September flight can save you 23% on your journey compared to booking in August

Most accurate provider : When it comes to deals on London Heathrow Airport-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on London Heathrow Airport-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from London Heathrow Airport-Ontario flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on London Heathrow Airport-Ontario flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for London Heathrow Airport-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

Ontario (ONT) is the airport you will fly into if you book a flight from London Heathrow to Ontario. You should not have trouble finding flights to Ontario from London Heathrow; the airport handles an average of 0 inbound flights from London Heathrow per day. You should also have plenty of airline options to choose from since 0 airlines have flights to the Ontario airport from London Heathrow. It is only a 3.1 mi journey from Ontario (ONT) to Ontario’s city center.

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 vacation 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.

$505+ Flights from London Heathrow Airport to Ontario

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1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

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The best prices from London Heathrow to Ontario are usually found in February or September, booked 68 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

Cheap flight deals from Heathrow to Ontario

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$505 (United Airlines)
Popular in	August
Cheapest in	February
Average price	$584

Provider with most accurate pricing for London Heathrow-Ontario flight deals.

Search Deals

Provider most trusted by Cheapflights users for London Heathrow-Ontario flights.

Search Deals

From London Heathrow to Ontario

Search Deals

Highest demand for flights based on searches. 9% potential increase in price ($78 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease ($28 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in February 2025

Search Deals

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 February 20, 2025.

Thu 3/209:30 amLHR - ONT

2 stops20h 15mUnited Airlines

Thu 3/276:00 amONT - LHR

1 stop18h 30mUnited Airlines

Deal found 2/19

$505

Sat 3/82:30 pmLHR - ONT

1 stop16h 22mKLM

Wed 3/121:30 pmONT - LHR

1 stop13h 30mKLM

Deal found 2/20

$515

Sat 3/221:45 pmLHR - ONT

1 stop16h 00mLufthansa

Sat 3/291:40 pmONT - LHR

1 stop14h 40mLufthansa

Deal found 2/19

$523

Sat 3/299:25 amLHR - ONT

1 stop16h 36mFinnair

Tue 4/82:44 pmONT - LHR

1 stop13h 46mFinnair

Deal found 2/19

$531

Tue 3/411:10 amLHR - ONT

2 stops18h 49mMultiple Airlines

Tue 3/111:40 pmONT - LHR

2 stops15h 10mMultiple Airlines

Deal found 2/20

$547

Thu 2/2710:45 amLHR - ONT

1 stop13h 43mDelta

Wed 3/121:30 pmONT - LHR

1 stop13h 30mDelta

Deal found 2/20

$553

Sun 3/29:25 amLHR - ONT

1 stop17h 10mBritish Airways

Sun 3/911:59 pmONT - LHR

1 stop24h 21mBritish Airways

Deal found 2/20

$566

Sat 3/151:05 pmLHR - ONT

1 stop16h 17mVirgin Atlantic

Mon 3/3111:42 amONT - LHR

1 stop15h 43mVirgin Atlantic

Deal found 2/18

$604

Thu 3/132:10 pmLHR - ONT

1 stop15h 17mIberia

Wed 3/2610:57 amONT - LHR

1 stop13h 23mIberia

Deal found 2/19

$741

Thu 5/152:10 pmLHR - ONT

2 stops30h 14mAir Canada

Tue 5/201:20 pmONT - LHR

2 stops36h 40mAir Canada

Deal found 2/19

$778

Wed 4/308:15 amLHR - ONT

1 stop21h 07mJetBlue

Sat 5/1010:40 pmONT - LHR

1 stop14h 05mJetBlue

Deal found 2/19

$815

Best flights from Heathrow to Ontario
Discover carefully curated flight deals from Heathrow to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 20, 2025.

Thu 3/206:30 amLHR - ONT

2 stops18h 34mUnited Airlines

Thu 3/275:05 amONT - LHR

2 stops19h 05mUnited Airlines

Deal found 2/19

$505

Sat 3/82:30 pmLHR - ONT

1 stop16h 22mKLM

Wed 3/121:30 pmONT - LHR

1 stop13h 30mKLM

Deal found 2/20

$515

Sat 3/221:45 pmLHR - ONT

1 stop16h 00mLufthansa

Sat 3/291:40 pmONT - LHR

1 stop14h 40mLufthansa

Deal found 2/19

$523

Sat 3/299:25 amLHR - ONT

1 stop16h 36mFinnair

Tue 4/82:44 pmONT - LHR

1 stop13h 46mFinnair

Deal found 2/19

$531

Tue 3/411:10 amLHR - ONT

2 stops18h 49mMultiple Airlines

Tue 3/111:40 pmONT - LHR

2 stops15h 10mMultiple Airlines

Deal found 2/20

$547

Sun 3/29:25 amLHR - ONT

1 stop17h 10mBritish Airways

Sun 3/911:59 pmONT - LHR

1 stop24h 21mBritish Airways

Deal found 2/20

$566

Sat 3/151:05 pmLHR - ONT

1 stop16h 17mVirgin Atlantic

Mon 3/3111:42 amONT - LHR

1 stop15h 43mVirgin Atlantic

Deal found 2/18

$604

Thu 3/132:10 pmLHR - ONT

1 stop15h 17mIberia

Wed 3/2610:57 amONT - LHR

1 stop13h 23mIberia

Deal found 2/19

$741

Wed 4/91:25 pmLHR - ONT

1 stop16h 58mDelta

Sat 4/262:35 pmONT - LHR

1 stop15h 40mDelta

Deal found 2/19

$765

Thu 5/152:10 pmLHR - ONT

2 stops30h 14mAir Canada

Tue 5/201:20 pmONT - LHR

2 stops36h 40mAir Canada

Deal found 2/19

$778

Wed 4/308:15 amLHR - ONT

1 stop21h 07mJetBlue

Sat 5/1010:40 pmONT - LHR

1 stop14h 05mJetBlue

Deal found 2/19

$815

Last-minute flights from Heathrow to Ontario
Discover last-minute flight deals from Heathrow to Ontario. Data last updated February 20, 2025 and is based on user searches.

Wed 2/2611:10 amLHR - ONT

2 stops17h 42mMultiple Airlines

Wed 3/55:05 amONT - LHR

2 stops18h 05mMultiple Airlines

Deal found 2/19

$701

Thu 2/2710:45 amLHR - ONT

1 stop13h 43mDelta

Wed 3/121:30 pmONT - LHR

1 stop13h 30mDelta

Deal found 2/19

$562

Thu 2/271:50 pmLHR - ONT

1 stop18h 03mIberia

Sat 3/12:54 pmONT - LHR

1 stop31h 26mIberia

Deal found 2/20

$971

Thu 2/2710:45 amLHR - ONT

1 stop13h 43mDelta

Wed 3/121:30 pmONT - LHR

1 stop13h 30mDelta

Deal found 2/20

$553

Sat 3/11:45 pmLHR - ONT

1 stop14h 55mLufthansa

Fri 5/91:20 pmONT - LHR

1 stop12h 20mLufthansa

Deal found 2/19

$523

Sat 3/12:30 pmLHR - ONT

1 stop16h 22mKLM

Mon 3/31:10 pmONT - LHR

1 stop13h 25mKLM

Deal found 2/20

$528

Sat 3/110:05 amLHR - ONT

1 stop16h 26mUnited Airlines

Sun 3/2310:38 amONT - LHR

1 stop13h 47mUnited Airlines

Deal found 2/19

$535

Sun 3/29:25 amLHR - ONT

1 stop17h 10mBritish Airways

Sun 3/911:59 pmONT - LHR

1 stop24h 21mBritish Airways

Deal found 2/20

$566

Sun 3/210:45 amLHR - ONT

1 stop13h 43mAir France

Sat 3/1512:46 pmONT - LHR

1 stop14h 49mAir France

Deal found 2/20

$10,591

Tue 3/411:10 amLHR - ONT

2 stops18h 49mMultiple Airlines

Tue 3/111:40 pmONT - LHR

2 stops15h 10mMultiple Airlines

Deal found 2/20

$547

Sat 3/82:30 pmLHR - ONT

1 stop16h 22mKLM

Wed 3/121:30 pmONT - LHR

1 stop13h 30mKLM

Deal found 2/20

$515

Thu 3/132:10 pmLHR - ONT

1 stop15h 17mIberia

Wed 3/2610:57 amONT - LHR

1 stop13h 23mIberia

Deal found 2/19

$741

One-way flights from Heathrow to Ontario
Search for one-way flight options from Heathrow to Ontario. Find affordable one-way fares based on user searches. Data last updated February 20, 2025.

Sun 3/162:50 pmLHR - ONT

2 stops55h 14mMultiple Airlines

Deal found 2/19

$552

Mon 3/179:25 amLHR - ONT

1 stop21h 29mIberia

Deal found 2/19

$582

Fri 3/211:45 pmLHR - ONT

1 stop16h 00mLufthansa

Deal found 2/19

$602

Mon 3/39:25 amLHR - ONT

1 stop17h 10mFinnair

Deal found 2/19

$619

Wed 4/308:15 amLHR - ONT

1 stop21h 07mJetBlue

Deal found 2/19

$742

Sun 3/162:20 pmLHR - ONT

1 stop16h 38mBritish Airways

Deal found 2/19

$823

Wed 7/162:10 pmLHR - ONT

2 stops16h 31mWestJet

Deal found 2/20

$831

Fri 2/284:10 pmLHR - ONT

1 stop38h 42mKLM

Deal found 2/18

$870

Mon 3/39:40 pmLHR - ONT

2 stops31h 20mAvianca

Deal found 2/19

$929

Mon 4/212:10 pmLHR - ONT

2 stops38h 11mAir Canada

Deal found 2/19

$1,480

Mon 4/211:05 pmLHR - ONT

1 stop17h 31mDelta

Deal found 2/19

$1,496

Sat 4/198:30 amLHR - ONT

2 stops20h 12mUnited Airlines

Deal found 2/20

$1,545

Find flights from Heathrow to Ontario within your budget

Fly from

Fly to

Route

Depart

Return

Price

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Thu 3/20

6:30 am-6:04 pm

2 stops18h 34m

Ontario

Thu 3/27

5:05 am-7:10 am

2 stops19h 05m

$505

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Sat 3/8

2:30 pm-10:52 pm

1 stop16h 22m

Ontario

Wed 3/12

1:30 pm-10:00 am

1 stop13h 30m

$515

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Sat 3/22

1:45 pm-10:45 pm

1 stop16h 00m

Ontario

Sat 3/29

1:40 pm-11:20 am

1 stop14h 40m

$523

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Sat 3/29

9:25 am-7:01 pm

1 stop16h 36m

Ontario

Tue 4/8

2:44 pm-12:30 pm

1 stop13h 46m

$531

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Tue 3/4

11:10 am-9:59 pm

2 stops18h 49m

Ontario

Tue 3/11

1:40 pm-11:50 am

2 stops15h 10m

$547

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Sun 3/2

9:25 am-6:35 pm

1 stop17h 10m

Ontario

Sun 3/9

11:59 pm-7:20 am

1 stop24h 21m

$566

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Sat 3/15

1:05 pm-10:22 pm

1 stop16h 17m

Ontario

Mon 3/31

11:42 am-11:25 am

1 stop15h 43m

$604

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Thu 3/13

2:10 pm-10:27 pm

1 stop15h 17m

Ontario

Wed 3/26

10:57 am-7:20 am

1 stop13h 23m

$741

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 4/9

1:25 pm-10:23 pm

1 stop16h 58m

Ontario

Sat 4/26

2:35 pm-2:15 pm

1 stop15h 40m

$765

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Thu 5/15

2:10 pm-12:24 pm

2 stops30h 14m

Ontario

Tue 5/20

1:20 pm-10:00 am

2 stops36h 40m

$778

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

Showing 1-10 of 24 results

Compare providers for flights from Heathrow to Ontario

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Heathrow to Ontario in February.

Provider	Price Accuracy	Trust Score*
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
AranGrant	Price Accuracy3 stars	Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on London Heathrow Airport-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on London Heathrow Airport-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from London Heathrow Airport-Ontario flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on London Heathrow Airport-Ontario flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for London Heathrow Airport-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 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.

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?

Booking 68 days in advance of your planned departure date is, on average, the best time to get cheap flights from London Heathrow Airport to Ontario. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, August is the cheapest month in which you can book a flight from London Heathrow Airport to Ontario (average of $246). Flying from London Heathrow Airport to Ontario in March is currently the most expensive (average of $315). 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?

Unlike at noon, when flights are generally more expensive, you can save up to 23% on flights from London Heathrow Airport to Ontario by exploring options for tickets in the afternoon.

Rainfall in Ontario by month

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario 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 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

Reviews of airlines servicing Ontario

Read through reviews of airlines operating flights from London to Ontario, such as Delta, KLM and Finnair. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

8,220 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta

8.0

Very good

8,220 reviews

Delta

8.0

Very good

8,220 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM

7.8

Good

1,333 reviews

Delta

8.0

Very good

8,220 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Finnair

7.6

Good

1,273 reviews

Delta

8.0

Very good

8,220 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Virgin Atlantic

7.5

Good

654 reviews

Delta

8.0

Very good

8,220 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

JetBlue

7.4

Good

3,070 reviews

Delta

8.0

Very good

8,220 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

What airport do you fly into for flights to Ontario from London Heathrow?
Ontario (ONT) is the airport you will fly into if you book a flight from London Heathrow to Ontario. You should not have trouble finding flights to Ontario from London Heathrow; the airport handles an average of 0 inbound flights from London Heathrow per day. You should also have plenty of airline options to choose from since 0 airlines have flights to the Ontario airport from London Heathrow. It is only a 3.1 mi journey from Ontario (ONT) to Ontario’s city center.
What are the cheapest airlines flying from London Heathrow Airport to Ontario round-trip?
Flying on United Airlines is currently your cheapest option to Ontario, with prices starting at $505. Additional round-trip tickets that might be worth considering are offered by KLM and Lufthansa, with the lowest prices starting at $515 and $523, respectively. These flights start at 30% lower than the current average price 3 months from now.
What are the cheapest airlines to fly from London Heathrow Airport to Ontario one-way?
To fly one-way, consider booking your trip with Iberia, which is currently one of the cheapest options available, starting at $582. Lufthansa flights start at $602 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 vacation 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, August is the cheapest month in which you can book a flight from London Heathrow Airport to Ontario (average of $246). Flying from London Heathrow Airport to Ontario in March is currently the most expensive (average of $315). 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

Browse thousands of different options on Cheapflights for your next trip

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$505+ Cheap flights from Heathrow (LHR) to Ontario (ONT)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/20. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Heathrow to Ontario with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

The best prices from London Heathrow to Ontario are usually found in February or September, booked 68 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

Cheap flight deals from Heathrow to Ontario

Most accurate provider

Most trusted provider

Round-trip from

Popular in

Cheapest in

Average price

Find flight deals from Heathrow to Ontario

Cheapest flights from Heathrow to OntarioExplore 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 February 20, 2025.

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 February 20, 2025.

Find flights from Heathrow to Ontario within your budget

Compare providers for flights from Heathrow to Ontario

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Heathrow to Ontario in February.

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.

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 round-trip flight from Heathrow to Ontario. Price data was last updated on February 14, 2025.

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

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 February 20, 2025.

Rainfall in Ontario by month

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

Temperature in Ontario by month

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

Reviews of airlines servicing Ontario

Read through reviews of airlines operating flights from London to Ontario, such as Delta, KLM and Finnair. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

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?

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

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

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

How can I find direct flights from Heathrow to Ontario?

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

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

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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 February 20, 2025.