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

Cheapflights users have booked flights from London to Ontario round-trip from $523. Other airlines that can offer you cheap pricing are Lufthansa, from $540, and Virgin Atlantic, from $557. These flights start at 28% lower than the current average price 3 months from now.

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

For one-way options, check prices for British Airways. According to our data, you can fly for as low as $573. Users have also found prices from $607 and $609 on Lufthansa and Iberia, respectively.

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

Travelers seeking maximum savings on their London to Ontario flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Tuesday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

What are the most popular routes from London to Ontario?

Most travelers choose London Heathrow - Ontario, London Gatwick - Ontario or London City - Ontario when deciding on the best route from London to Ontario.

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

Flights from London to Ontario are found to be more expensive on Sunday. 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 to Ontario?

Find a great deal and save up to 23% by booking at least 8 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 to Ontario within the next two weeks, with the cheapest ticket starting at $593.

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

Due to multiple factors, expect to potentially pay more when booking in August. For low rates, February can be a great choice for travel to Ontario. Flights to Ontario from London in February are about $664 on average during February, but can be found for as low as $472.

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

Most trusted provider : When it comes to deals on London-Ontario flights, Cheapflights users trust eDreams the most. eDreams 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-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?

Ontario (ONT), located 3.1 mi from the city center, is the airport you fly into when you book flights from London to Ontario. 1 airline have flights to Ontario from London on a regular basis. Booking flights from London to Ontario should not be difficult; the airport handles an average of 0 inbound flights from London per day.

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

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

How can I find direct flights from London to Ontario?

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

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

Yes. Cheapflights offers flight deals from London 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.

$370+ Flights from London to Ontario

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Find cheap flights from London to Ontario with Cheapflights

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.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from London to Ontario are usually found in February or January, booked 77 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

Cheap flight deals from London to Ontario

Most accurate provider	FlightHub 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$521 (Finnair)
One-way from	$370 (Kiwi.com)
Popular in	August
Cheapest in	February
Average price	$724

Provider with most accurate pricing for London (LON)-Ontario flight deals.

Search Deals

Provider most trusted by Cheapflights users for London (LON)-Ontario flights.

Search Deals

From London (LON) to Ontario

Search Deals

One-way flight from London (LON) to Ontario

Search Deals

Highest demand for flights based on searches. 15% potential increase in price ($136 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease ($34 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in May 2025

Search Deals

Find flight deals from London to Ontario

Cheapest flights from London to Ontario
Explore the most affordable flight options available from London to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.

Sun 5/182:45 pmLGW - ONT

2 stops31h 07mMultiple Airlines

Sat 5/2410:40 pmONT - LGW

2 stops25h 10mMultiple Airlines

Deal found 4/30

$521

Tue 5/133:05 pmLGW - ONT

2 stops28h 45mAmerican Airlines

Sun 6/111:59 pmONT - LGW

2 stops24h 11mAmerican Airlines

Deal found 4/30

$523

Thu 5/87:50 amLHR - ONT

2 stops22h 08mBritish Airways

Thu 5/226:15 amONT - LHR

1 stop20h 35mBritish Airways

Deal found 4/30

$540

Thu 5/810:55 amLHR - ONT

1 stop13h 22mKLM

Mon 5/121:10 pmONT - LHR

1 stop12h 40mKLM

Deal found 4/30

$560

Thu 5/151:40 pmLHR - ONT

1 stop16h 20mUnited Airlines

Fri 5/231:36 pmONT - LHR

1 stop12h 49mUnited Airlines

Deal found 4/30

$564

Wed 9/109:15 amLHR - ONT

2 stops22h 21mIberia

Wed 9/1712:49 pmONT - LHR

1 stop14h 01mIberia

Deal found 4/30

$566

Wed 5/289:55 amLHR - ONT

2 stops20h 40mDelta

Wed 6/117:05 amONT - LHR

2 stops17h 45mDelta

Deal found 4/30

$570

Thu 9/118:20 amLHR - ONT

1 stop17h 20mFinnair

Sun 9/2112:49 pmONT - LHR

1 stop14h 01mFinnair

Deal found 4/30

$612

Mon 8/111:25 pmLHR - ONT

1 stop17h 16mVirgin Atlantic

Tue 9/3011:29 amONT - LHR

1 stop15h 51mVirgin Atlantic

Deal found 4/30

$619

Wed 10/2912:05 pmLHR - ONT

1 stop16h 16mLufthansa

Wed 11/191:00 pmONT - LHR

1 stop12h 40mLufthansa

Deal found 4/30

$638

Fri 6/68:40 amLCY - ONT

2 stops21h 55mDelta

Sun 6/85:08 pmONT - LCY

2 stops15h 32mDelta

Deal found 4/30

$641

Mon 6/308:40 pmLGW - ONT

2 stops54h 21mIberia

Sun 7/1312:46 pmONT - LGW

2 stops23h 14mIberia

Deal found 4/30

$684

Best flights from London to Ontario
Discover carefully curated flight deals from London to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 1, 2025.

Sun 5/182:45 pmLGW - ONT

2 stops31h 07mMultiple Airlines

Sat 5/2410:40 pmONT - LGW

2 stops25h 10mMultiple Airlines

Deal found 4/30

$521

Tue 5/133:05 pmLGW - ONT

2 stops28h 45mAmerican Airlines

Sun 6/111:59 pmONT - LGW

2 stops24h 11mAmerican Airlines

Deal found 4/30

$523

Sat 5/102:50 pmLHR - ONT

1 stop14h 03mLufthansa

Sat 5/171:20 pmONT - LHR

1 stop12h 20mLufthansa

Deal found 4/29

$540

Fri 6/61:25 pmLHR - ONT

1 stop17h 10mVirgin Atlantic

Sun 6/811:25 amONT - LHR

2 stops35h 00mVirgin Atlantic

Deal found 4/30

$557

Sun 9/73:10 pmLHR - ONT

1 stop16h 26mBritish Airways

Fri 9/125:09 pmONT - LHR

1 stop13h 31mBritish Airways

Deal found 4/30

$558

Tue 5/1310:55 amLHR - ONT

1 stop13h 22mKLM

Tue 8/51:15 pmONT - LHR

1 stop12h 35mKLM

Deal found 4/30

$561

Wed 5/142:50 pmLHR - ONT

1 stop14h 03mUnited Airlines

Tue 5/203:10 pmONT - LHR

1 stop15h 00mUnited Airlines

Deal found 4/29

$562

Wed 9/109:15 amLHR - ONT

2 stops22h 21mIberia

Wed 9/1712:49 pmONT - LHR

1 stop14h 01mIberia

Deal found 4/30

$566

Wed 5/289:55 amLHR - ONT

2 stops20h 40mDelta

Wed 6/117:05 amONT - LHR

2 stops17h 45mDelta

Deal found 4/30

$570

Thu 9/118:20 amLHR - ONT

1 stop17h 20mFinnair

Sun 9/2112:49 pmONT - LHR

1 stop14h 01mFinnair

Deal found 4/30

$612

Mon 9/811:20 amLHR - ONT

1 stop19h 21mAir France

Sun 9/2810:59 pmONT - LHR

1 stop28h 11mAir France

Deal found 4/30

$756

Mon 6/309:30 amLHR - ONT

2 stops39h 55mAir Canada

Sun 7/136:28 pmONT - LHR

2 stops55h 32mAir Canada

Deal found 4/30

$768

Last-minute flights from London to Ontario
Discover last-minute flight deals from London to Ontario. Data last updated May 1, 2025 and is based on user searches.

Mon 5/510:05 pmLHR - ONT

2 stops31h 50mMultiple Airlines

Mon 7/214:45 pmONT - LHR

1 stop12h 05mMultiple Airlines

Deal found 4/30

$1,300

Wed 5/710:35 amLHR - ONT

1 stop15h 26mUnited Airlines

Sun 5/251:33 pmONT - LHR

1 stop12h 07mUnited Airlines

Deal found 4/30

$655

Thu 5/87:50 amLHR - ONT

2 stops22h 08mBritish Airways

Thu 5/226:15 amONT - LHR

1 stop20h 35mBritish Airways

Deal found 4/30

$540

Thu 5/810:55 amLHR - ONT

1 stop13h 22mKLM

Mon 5/121:10 pmONT - LHR

1 stop12h 40mKLM

Deal found 4/30

$560

Thu 5/88:15 amLHR - ONT

1 stop20h 56mJetBlue

Thu 5/1510:59 pmONT - LHR

1 stop13h 46mJetBlue

Deal found 4/30

$949

Thu 5/811:55 amLHR - ONT

1 stop17h 16mIcelandair

Thu 5/1510:59 pmONT - LHR

1 stop26h 31mIcelandair

Deal found 4/30

$967

Thu 5/86:10 amLHR - ONT

2 stops23h 48mIberia

Thu 5/2210:53 amONT - LHR

2 stops16h 57mIberia

Deal found 4/30

$2,810

Sat 5/103:05 pmLGW - ONT

2 stops35h 18mMultiple Airlines

Mon 5/266:01 amONT - LGW

2 stops18h 09mMultiple Airlines

Deal found 4/30

$613

Sat 5/101:25 pmLHR - ONT

1 stop17h 10mVirgin Atlantic

Mon 5/261:10 pmONT - LHR

1 stop12h 40mVirgin Atlantic

Deal found 4/30

$631

Sat 5/109:30 amLHR - ONT

2 stops19h 23mLufthansa

Mon 5/267:00 amONT - LHR

3 stops38h 55mLufthansa

Deal found 4/30

$953

Sat 5/109:10 pmLHR - ONT

1 stop28h 50mChina Airlines

Sun 5/2512:10 amONT - LHR

1 stop32h 20mChina Airlines

Deal found 4/30

$8,612

Tue 5/133:05 pmLGW - ONT

2 stops28h 45mAmerican Airlines

Sun 6/111:59 pmONT - LGW

2 stops24h 11mAmerican Airlines

Deal found 4/30

$523

One-way flights from London to Ontario
Search for one-way flight options from London to Ontario. Find affordable one-way fares based on user searches. Data last updated May 1, 2025.

Tue 5/131:00 pmLGW - ONT

3 stops31h 08mMultiple Airlines

Deal found 4/29

$370

Tue 5/132:10 pmLHR - ONT

2 stops29h 58mMultiple Airlines

Deal found 4/29

$493

Fri 6/63:40 pmLHR - ONT

1 stop13h 58mBritish Airways

Deal found 4/30

$573

Fri 8/298:55 amLCY - ONT

2 stops20h 30mLufthansa

Deal found 4/30

$607

Wed 9/1710:30 amLHR - ONT

1 stop19h 26mIberia

Deal found 4/30

$609

Fri 8/294:30 pmLHR - ONT

2 stops36h 55mLufthansa

Deal found 4/30

$617

Tue 5/1310:55 amLHR - ONT

1 stop13h 22mAir France

Deal found 4/30

$670

Wed 5/148:15 amLHR - ONT

1 stop20h 56mJetBlue

Deal found 4/30

$787

Wed 9/1710:40 amLGW - ONT

2 stops19h 16mFinnair

Deal found 4/30

$836

Tue 9/98:25 amLHR - ONT

2 stops21h 16mIcelandair

Deal found 4/30

$852

Fri 9/59:20 amLCY - ONT

2 stops21h 21mVirgin Atlantic

Deal found 4/30

$900

Wed 9/1010:05 pmLHR - ONT

2 stops31h 50mAvianca

Deal found 4/30

$915

Cheapflights Fare Finder

Use the filters below to find and compare flights from London to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Sun 5/18

2:45 pm-1:52 pm

2 stops31h 07m

Ontario

Sat 5/24

10:40 pm-7:50 am

2 stops25h 10m

$521

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Tue 5/13

3:05 pm-11:50 am

2 stops28h 45m

Ontario

Sun 6/1

11:59 pm-8:10 am

2 stops24h 11m

$523

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Sat 5/10

2:50 pm-8:53 pm

1 stop14h 03m

Ontario

Sat 5/17

1:20 pm-9:40 am

1 stop12h 20m

$540

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Fri 6/6

10:30 am-7:01 pm

1 stop16h 31m

Ontario

Sun 6/8

8:15 am-9:00 am

1 stop16h 45m

$557

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Tue 5/13

10:55 am-4:17 pm

1 stop13h 22m

Ontario

Tue 8/5

1:15 pm-9:50 am

1 stop12h 35m

$561

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 5/14

2:50 pm-8:53 pm

1 stop14h 03m

Ontario

Tue 5/20

3:10 pm-2:10 pm

1 stop15h 00m

$562

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 9/10

9:15 am-11:36 pm

2 stops22h 21m

Ontario

Wed 9/17

12:49 pm-10:50 am

1 stop14h 01m

$566

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 5/28

9:55 am-10:35 pm

2 stops20h 40m

Ontario

Wed 6/11

7:05 am-8:50 am

2 stops17h 45m

$570

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Thu 9/11

8:20 am-5:40 pm

1 stop17h 20m

Ontario

Sun 9/21

12:49 pm-10:50 am

1 stop14h 01m

$612

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Mon 8/11

1:25 pm-10:41 pm

1 stop17h 16m

Ontario

Tue 9/30

11:29 am-11:20 am

1 stop15h 51m

$619

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 50 results

...

Compare providers for flights from London to Ontario

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

Provider	Price Accuracy	Trust Score*
FlightHub	Price Accuracy3 stars	Trust Score*2 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars

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

Have a flexible travel schedule? Discover the best time to fly to Ontario from London 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.

Cheapflights Insights

Everything you need to know about your flight from London to Ontario

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

Booking 77 days in advance of your planned departure date is, on average, the best time to get cheap flights from London 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 to Ontario?

Currently, August is the cheapest month in which you can book a flight from London to Ontario (average of $246). Flying from London to Ontario in March is currently the most expensive (average of $328). 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 LON to ONT?

A simple way to save on the total cost of your ticket is to fly from London to Ontario in the afternoon. If you’re flexible enough to do this you can expect to save up to 27% on your trip compared to booking a flight at noon.

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

Peruse reviews from past customers who have flown with Delta, KLM and Finnair from London to Ontario to help guide your decision. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,934 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

7,934 reviews

Delta

8.0

Very good

7,934 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

1,334 reviews

Delta

8.0

Very good

7,934 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

1,275 reviews

Delta

8.0

Very good

7,934 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

Air France

7.4

Good

1,446 reviews

Delta

8.0

Very good

7,934 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

United Airlines

7.4

Good

8,696 reviews

Delta

8.0

Very good

7,934 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?
Ontario (ONT), located 3.1 mi from the city center, is the airport you fly into when you book flights from London to Ontario. 1 airline have flights to Ontario from London on a regular basis. Booking flights from London to Ontario should not be difficult; the airport handles an average of 0 inbound flights from London per day.
What are the cheapest airlines flying from London to Ontario round-trip?
Cheapflights users have booked flights from London to Ontario round-trip from $523. Other airlines that can offer you cheap pricing are Lufthansa, from $540, and Virgin Atlantic, from $557. These flights start at 28% lower than the current average price 3 months from now.
What are the cheapest airlines to fly from London to Ontario one-way?
For one-way options, check prices for British Airways. According to our data, you can fly for as low as $573. Users have also found prices from $607 and $609 on Lufthansa and Iberia, respectively.
What are the most popular routes from London to Ontario?
Most travelers choose London Heathrow - Ontario, London Gatwick - Ontario or London City - Ontario when deciding on the best route from London to Ontario.
Can I find deals for flights from London to Ontario that include hotel bookings?
Yes. In addition to deals on London to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from London to Ontario?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Ontario.
Can I find deals for business class flights from London to Ontario?
Yes. Cheapflights offers flight deals from London 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 to Ontario?
Currently, August is the cheapest month in which you can book a flight from London to Ontario (average of $246). Flying from London to Ontario in March is currently the most expensive (average of $328). 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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Other flights to Ontario

Top airline flying from London to Ontario

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$662	Average$836	FlexibilityNo cancel fee	On-time69%

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$370+ Cheap flights from London (LON) to Ontario (ONT)

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 5/13. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from London to Ontario with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from London to Ontario are usually found in February or January, booked 77 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

Cheap flight deals from London to Ontario

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from London to Ontario

Cheapest flights from London to OntarioExplore the most affordable flight options available from London to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.

Explore the most affordable flight options available from London to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from London to Ontario that are best for you.

Compare providers for flights from London 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 London to Ontario in May.

Best time to book a flight from London to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from London with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from London to Ontario

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

Use this chart to determine the optimal time to book a round-trip flight from London to Ontario. Price data was last updated on April 25, 2025.

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

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

Find hourly flight availability from London 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 May 1, 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

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 May 1, 2025.

Peruse reviews from past customers who have flown with Delta, KLM and Finnair from London to Ontario to help guide your decision. In addition to providing an overall rating, users have also rated airlines 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 London 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?

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

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

What are the most popular routes from London to Ontario?

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

How can I find direct flights from London to Ontario?

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

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

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Alternative routes for London to Ontario

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Cheapest flights from London to Ontario
Explore the most affordable flight options available from London to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.