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

Cheapflights users have booked flights from London to Ontario round-trip from $505. Other airlines that can offer you cheap pricing are Virgin Atlantic, from $519, and KLM, from $527. These flights start at 30% 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 Lufthansa. According to our data, you can fly for as low as $520. Users have also found prices from $682 and $698 on WestJet and Air France, 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 21% 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 $605.

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 $669 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 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-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.

$375+ 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	FlightHub 3 stars
Round-trip from	$505 (World Air Fares)
One-way from	$375 (Kiwi.com)
Popular in	August
Cheapest in	February
Average price	$645

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. 17% potential increase in price ($149 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 5% potential price decrease ($37 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in March 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 March 28, 2025.

Fri 5/212:20 pmLGW - ONT

2 stops19h 30mFinnair

Sun 5/410:40 pmONT - LGW

2 stops25h 30mFinnair

Deal found 3/26

$505

Wed 5/711:45 amLHR - ONT

2 stops19h 57mVirgin Atlantic

Sat 5/171:10 pmONT - LHR

2 stops16h 00mVirgin Atlantic

Deal found 3/26

$519

Fri 4/2512:20 pmLGW - ONT

2 stops19h 30mMultiple Airlines

Fri 5/211:59 pmONT - LGW

2 stops24h 11mMultiple Airlines

Deal found 3/26

$523

Tue 5/66:30 amLHR - ONT

2 stops18h 14mKLM

Tue 5/1310:01 amONT - LHR

1 stop15h 49mKLM

Deal found 3/27

$527

Fri 9/123:10 pmLHR - ONT

1 stop16h 26mAmerican Airlines

Mon 9/223:00 pmONT - LHR

1 stop13h 30mAmerican Airlines

Deal found 3/27

$545

Wed 4/234:25 pmLHR - ONT

1 stop15h 25mBritish Airways

Wed 4/306:00 amONT - LHR

1 stop16h 25mBritish Airways

Deal found 3/27

$546

Thu 9/1110:50 amLHR - ONT

2 stops20h 46mIberia

Wed 9/1712:49 pmONT - LHR

1 stop14h 01mIberia

Deal found 3/27

$548

Sat 5/106:30 amLHR - ONT

2 stops19h 50mDelta

Sat 5/177:05 amONT - LHR

2 stops18h 55mDelta

Deal found 3/26

$550

Sat 5/1010:00 amLCY - ONT

2 stops20h 35mDelta

Wed 5/141:10 pmONT - LCY

2 stops19h 30mDelta

Deal found 3/27

$591

Thu 9/119:30 amLHR - ONT

2 stops18h 47mUnited Airlines

Wed 9/176:36 pmONT - LHR

2 stops31h 04mUnited Airlines

Deal found 3/27

$593

Sat 5/1010:00 amLHR - ONT

1 stop20h 00mMultiple Airlines

Sat 5/176:00 amONT - LHR

1 stop20h 25mMultiple Airlines

Deal found 3/26

$624

Wed 11/511:45 amLHR - ONT

1 stop16h 26mFinnair

Thu 11/1311:00 amONT - LHR

1 stop13h 15mFinnair

Deal found 3/27

$640

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 March 28, 2025.

Fri 5/212:20 pmLGW - ONT

2 stops19h 30mFinnair

Sun 5/410:40 pmONT - LGW

2 stops25h 30mFinnair

Deal found 3/26

$505

Wed 5/711:45 amLHR - ONT

2 stops19h 57mVirgin Atlantic

Sat 5/171:10 pmONT - LHR

2 stops16h 00mVirgin Atlantic

Deal found 3/26

$519

Fri 4/2512:20 pmLGW - ONT

2 stops19h 30mMultiple Airlines

Fri 5/211:59 pmONT - LGW

2 stops24h 11mMultiple Airlines

Deal found 3/26

$523

Tue 5/66:30 amLHR - ONT

2 stops18h 14mKLM

Tue 5/1310:01 amONT - LHR

1 stop15h 49mKLM

Deal found 3/27

$527

Fri 9/123:10 pmLHR - ONT

1 stop16h 26mAmerican Airlines

Mon 9/223:00 pmONT - LHR

1 stop13h 30mAmerican Airlines

Deal found 3/27

$545

Wed 4/234:25 pmLHR - ONT

1 stop15h 25mBritish Airways

Wed 4/306:00 amONT - LHR

1 stop16h 25mBritish Airways

Deal found 3/27

$546

Thu 9/1110:50 amLHR - ONT

2 stops20h 46mIberia

Wed 9/1712:49 pmONT - LHR

1 stop14h 01mIberia

Deal found 3/27

$548

Sat 5/106:30 amLHR - ONT

2 stops19h 50mDelta

Sat 5/1711:46 amONT - LHR

1 stop18h 29mDelta

Deal found 3/26

$550

Thu 9/119:30 amLHR - ONT

2 stops18h 47mUnited Airlines

Wed 9/176:36 pmONT - LHR

2 stops31h 04mUnited Airlines

Deal found 3/27

$593

Mon 9/1512:10 pmLGW - ONT

2 stops41h 31mIcelandair

Wed 10/811:00 pmONT - LGW

2 stops26h 35mIcelandair

Deal found 3/27

$782

Wed 9/108:15 amLHR - ONT

1 stop21h 26mJetBlue

Wed 9/2411:00 pmONT - LHR

1 stop13h 45mJetBlue

Deal found 3/27

$783

Sat 5/1010:00 amLCY - ONT

2 stops20h 35mDelta

Wed 5/141:10 pmONT - LCY

2 stops19h 30mDelta

Deal found 3/27

$591

Last-minute flights from London to Ontario
Discover last-minute flight deals from London to Ontario. Data last updated March 28, 2025 and is based on user searches.

Tue 4/18:30 amLHR - ONT

2 stops21h 28mMultiple Airlines

Tue 4/85:00 amONT - LHR

2 stops17h 30mMultiple Airlines

Deal found 3/27

$1,083

Tue 4/112:20 pmLHR - ONT

1 stop16h 01mLufthansa

Mon 4/71:20 pmONT - LHR

1 stop13h 05mLufthansa

Deal found 3/26

$1,129

Tue 4/13:10 pmLHR - ONT

1 stop15h 17mIberia

Tue 4/1510:54 amONT - LHR

2 stops18h 41mIberia

Deal found 3/27

$1,300

Tue 4/19:10 pmLHR - ONT

1 stop28h 50mChina Airlines

Mon 4/712:10 amONT - LHR

1 stop32h 20mChina Airlines

Deal found 3/27

$8,725

Thu 4/310:55 amLHR - ONT

1 stop13h 38mKLM

Tue 4/812:42 pmONT - LHR

1 stop14h 28mKLM

Deal found 3/26

$628

Thu 4/311:15 amLHR - ONT

1 stop15h 18mAmerican Airlines

Fri 6/64:50 pmONT - LHR

1 stop13h 50mAmerican Airlines

Deal found 3/27

$721

Thu 4/310:55 amLHR - ONT

1 stop13h 38mDelta

Tue 6/101:15 pmONT - LHR

1 stop12h 35mDelta

Deal found 3/27

$743

Thu 4/31:25 pmLHR - ONT

1 stop16h 58mVirgin Atlantic

Thu 5/2911:46 amONT - LHR

1 stop15h 34mVirgin Atlantic

Deal found 3/26

$783

Fri 4/43:10 pmLHR - ONT

1 stop15h 00mFinnair

Fri 4/1110:44 amONT - LHR

1 stop14h 16mFinnair

Deal found 3/26

$814

Fri 4/43:10 pmLHR - ONT

1 stop15h 00mBritish Airways

Fri 5/212:50 pmONT - LHR

1 stop14h 00mBritish Airways

Deal found 3/26

$848

Sat 4/52:50 pmLHR - ONT

1 stop13h 52mUnited Airlines

Fri 4/111:35 pmONT - LHR

1 stop12h 05mUnited Airlines

Deal found 3/26

$957

Mon 4/77:45 pmLHR - ONT

2 stops34h 51mMultiple Airlines

Mon 4/282:35 pmONT - LHR

1 stop15h 40mMultiple Airlines

Deal found 3/27

$706

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 March 28, 2025.

Thu 5/12:00 pmLGW - ONT

2 stops31h 35mMultiple Airlines

Deal found 3/26

$375

Tue 4/222:10 pmLHR - ONT

2 stops33h 07mMultiple Airlines

Deal found 3/26

$463

Tue 9/21:40 pmLHR - ONT

1 stop16h 16mLufthansa

Deal found 3/26

$520

Thu 5/18:30 amLCY - ONT

3 stops30h 53mMultiple Airlines

Deal found 3/26

$631

Mon 7/141:55 pmLHR - ONT

2 stops16h 46mWestJet

Deal found 3/25

$682

Wed 4/3011:00 amLHR - ONT

1 stop20h 41mAir France

Deal found 3/27

$698

Thu 4/174:25 pmLHR - ONT

1 stop15h 25mIberia

Deal found 3/26

$702

Tue 4/811:15 amLHR - ONT

1 stop15h 12mBritish Airways

Deal found 3/27

$732

Wed 4/3011:55 amLHR - ONT

1 stop17h 30mJetBlue

Deal found 3/27

$759

Wed 9/36:30 amLHR - ONT

2 stops20h 59mDelta

Deal found 3/27

$829

Wed 9/38:40 amLCY - ONT

2 stops21h 49mDelta

Deal found 3/27

$837

Mon 5/198:15 amLHR - ONT

1 stop20h 56mIcelandair

Deal found 3/27

$851

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

Fri 5/2

12:20 pm-11:50 pm

2 stops19h 30m

Ontario

Sun 5/4

10:40 pm-8:10 am

2 stops25h 30m

$505

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 5/7

11:45 am-11:42 pm

2 stops19h 57m

Ontario

Sat 5/17

1:10 pm-1:10 pm

2 stops16h 00m

$519

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Fri 4/25

12:20 pm-11:50 pm

2 stops19h 30m

Ontario

Fri 5/2

11:59 pm-8:10 am

2 stops24h 11m

$523

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Tue 5/6

6:30 am-4:44 pm

2 stops18h 14m

Ontario

Tue 5/13

10:01 am-9:50 am

1 stop15h 49m

$527

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Fri 9/12

3:10 pm-11:36 pm

1 stop16h 26m

Ontario

Mon 9/22

3:00 pm-12:30 pm

1 stop13h 30m

$545

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 4/23

4:25 pm-11:50 pm

1 stop15h 25m

Ontario

Wed 4/30

6:00 am-6:25 am

1 stop16h 25m

$546

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Thu 9/11

10:50 am-11:36 pm

2 stops20h 46m

Ontario

Wed 9/17

12:49 pm-10:50 am

1 stop14h 01m

$548

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Sat 5/10

6:30 am-6:20 pm

2 stops19h 50m

Ontario

Sat 5/17

7:05 am-10:00 am

2 stops18h 55m

$550

LondonOntario

LCY - ONT

LCYONT

London City

Sat 5/10

10:00 am-10:35 pm

2 stops20h 35m

Ontario

Wed 5/14

1:10 pm-4:40 pm

2 stops19h 30m

$591

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Thu 9/11

9:30 am-8:17 pm

2 stops18h 47m

Ontario

Wed 9/17

6:36 pm-9:40 am

2 stops31h 04m

$593

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/26

Showing 1-10 of 44 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 March.

Provider	Price Accuracy	Trust Score*
FlightHub	Price Accuracy3 stars	Trust Score*3 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 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-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 $326). 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

7,896 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

7,896 reviews

Delta

8.0

Very good

7,896 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

1,321 reviews

Delta

8.0

Very good

7,896 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

1,267 reviews

Delta

8.0

Very good

7,896 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

1,424 reviews

Delta

8.0

Very good

7,896 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

8,603 reviews

Delta

8.0

Very good

7,896 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 $505. Other airlines that can offer you cheap pricing are Virgin Atlantic, from $519, and KLM, from $527. These flights start at 30% 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 Lufthansa. According to our data, you can fly for as low as $520. Users have also found prices from $682 and $698 on WestJet and Air France, 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 $326). 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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$375+ 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 5/1. 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 March 28, 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 March 28, 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 March.

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 March 21, 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 March 28, 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

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 March 28, 2025.