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Cheap flights from London to Ontario from C$ 501

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 31/3. Fares are subject to change and may not be available on all flights or dates of travel.
LON — YYZ
14 Jan — 21 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from London to Ontario

Enter your travel dates to find the best prices.

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 15 December 2025.

Wed 24/126:30 p.m.LHR - YYZ
1 stop25h 15mTAP AIR PORTUGAL
Sun 18/110:45 p.m.YYZ - LHR
1 stop13h 45mTAP AIR PORTUGAL
Deal found 13/12C$ 770
Tue 16/126:30 a.m.LHR - YYZ
1 stop14h 45mMultiple Airlines
Tue 23/129:15 p.m.YYZ - LHR
1 stop18h 20mMultiple Airlines
Deal found 14/12C$ 777
Mon 15/127:30 a.m.LHR - YYZ
1 stop13h 45mLufthansa
Tue 13/18:25 p.m.YYZ - LHR
Nonstop7h 05mLufthansa
Deal found 13/12C$ 781
Wed 24/129:05 a.m.LHR - YYZ
2 stops40h 25mAustrian Airlines
Fri 16/111:10 p.m.YYZ - LHR
1 stop27h 00mAustrian Airlines
Deal found 13/12C$ 783
Wed 24/126:00 p.m.LHR - YYZ
Nonstop8h 10mAir Canada
Tue 20/18:25 p.m.YYZ - LHR
Nonstop7h 05mAir Canada
Deal found 13/12C$ 788
Wed 24/1212:00 p.m.LHR - YYZ
1 stop12h 26mAir Canada
Tue 13/16:15 a.m.YYZ - LHR
1 stop9h 20mAir Canada
Deal found 13/12C$ 789
Mon 15/129:30 a.m.LHR - YYZ
1 stop11h 45mLufthansa
Wed 14/15:30 p.m.YYZ - LHR
1 stop10h 50mLufthansa
Deal found 13/12C$ 794
Tue 16/126:00 a.m.LHR - YTZ
2 stops16h 55mSWISS
Tue 13/112:30 p.m.YTZ - LHR
2 stops17h 45mSWISS
Deal found 13/12C$ 799
Mon 15/126:30 a.m.LHR - YYZ
1 stop11h 35mLufthansa
Wed 24/125:30 p.m.YYZ - LHR
1 stop10h 50mLufthansa
Deal found 13/12C$ 801
Fri 26/129:00 a.m.LHR - YUL
1 stop11h 10mMultiple Airlines
Fri 9/15:10 p.m.YUL - LHR
1 stop10h 20mMultiple Airlines
Deal found 14/12C$ 801
Tue 16/129:30 a.m.LHR - YYZ
1 stop11h 45mLufthansa
Tue 23/129:15 p.m.YYZ - LHR
1 stop18h 20mLufthansa
Deal found 15/12C$ 804
Mon 15/1211:10 a.m.LHR - YUL
1 stop12h 10mLufthansa
Wed 24/121:15 p.m.YUL - LHR
1 stop15h 05mLufthansa
Deal found 14/12C$ 804

Find flight deals from London to Ontario

Keep the following information in mind while searching for London to Ontario flight deals. Data was last updated 15 December 2025.

Round-trip from

C$ 722

One-way from

C$ 501

Popular in

December

Cheapest in

February

Average price

C$ 1,026

Good round-trip deal

C$ 698 or less

Good one-way deal

C$ 631 or less
Air Canada
  • Air Canada
  • 15/1-20/1
  • 1 total stop
  • 19h 30m total
  • London to Ontario
Search Deals
31/3
  • 31/3
  • 2 total stops
  • 35h 13m total
  • London to Ontario
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (C$ 70 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 32 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from London (LON) to Ontario.
Search Deals
Price to beat on a one-way flight from London (LON) to Ontario.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from London to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 15 December 2025.
Use the filters below to find and compare flights from London to Ontario that are best for you.

Fly from

London

Fly to

Ontario

Route

Depart

Return

Price

LondonToronto

LTN - YYZ

LTNYYZ

London Luton

Thu 29/1

10:05 a.m.-12:35 p.m.

1 stop31h 30m

Toronto Pearson Intl

Thu 5/2

6:50 p.m.-8:30 p.m.

1 stop20h 40m

C$ 737

LondonToronto

LGW - YYZ

LGWYYZ

London Gatwick

Sat 7/2

11:55 a.m.-6:15 p.m.

1 stop11h 20m

Toronto Pearson Intl

Mon 16/2

7:40 p.m.-10:55 a.m.

1 stop10h 15m

C$ 742

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

Fri 13/3

6:40 a.m.-4:40 p.m.

1 stop14h 00m

Toronto Pearson Intl

Wed 18/3

6:10 p.m.-4:25 p.m.

2 stops18h 15m

C$ 745

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

Tue 24/2

6:00 a.m.-1:50 p.m.

1 stop12h 50m

Toronto Pearson Intl

Tue 3/3

11:10 p.m.-7:10 a.m.

1 stop27h 00m

C$ 745

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

Wed 11/2

7:25 p.m.-1:50 p.m.

1 stop23h 25m

Toronto Pearson Intl

Sat 21/2

11:10 p.m.-7:10 a.m.

1 stop27h 00m

C$ 745

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

Mon 9/2

7:25 p.m.-1:50 p.m.

1 stop23h 25m

Toronto Pearson Intl

Tue 17/2

11:10 p.m.-7:10 a.m.

1 stop27h 00m

C$ 745

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

Tue 10/3

7:50 p.m.-4:40 p.m.

2 stops24h 50m

Toronto Pearson Intl

Tue 24/3

6:10 p.m.-4:25 p.m.

2 stops18h 15m

C$ 749

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

Mon 12/1

8:35 p.m.-6:15 p.m.

1 stop26h 40m

Toronto Pearson Intl

Sat 18/4

11:20 p.m.-8:20 p.m.

1 stop16h 00m

C$ 750

LondonToronto

LTN - YYZ

LTNYYZ

London Luton

Wed 21/1

6:50 a.m.-3:55 p.m.

1 stop14h 05m

Toronto Pearson Intl

Sun 25/1

5:25 p.m.-8:55 a.m.

1 stop10h 30m

C$ 752

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

Fri 27/2

12:15 p.m.-6:15 p.m.

1 stop11h 00m

Toronto Pearson Intl

Wed 9/9

8:45 p.m.-11:55 a.m.

1 stop10h 10m

C$ 752

Flights are sorted by cheapest round-trip flights first.

Deals found on 14/12

Showing 1-10 of 60 results
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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

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

Currently, February is the cheapest month in which you can book a flight from London to Region of Ontario (average of C$ 481). Flying from London to Region of Ontario in December is currently the most expensive (average of C$ 693). 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 ON?

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 15 December 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 33% on flights from London to Region of Ontario by exploring options for tickets in the evening.

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

Use this chart to determine the cheapest time to fly round-trip from London to Ontario. Price data was last updated on 16 December 2024.

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

Weekly flight availability from London to Region of Ontario

Explore weekly flight availability from London to Ontario. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 15 December 2025.

The most flights from LON to CAON are scheduled on a Sunday (38 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (27 on average).

How much does it cost to fly round-trip from London to Region of Ontario?

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 15 December 2025.
Read reviews from past customers who have flown Air Transat,Air Canada, andIcelandair from London to Ontario. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Air Transat
7.8
Good
482 reviews
Check prices

Comfort

7.4

Entertainment

7.1

Overall

7.8

Boarding

7.9

Food

6.8

Crew

8.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

YYZ - YUL

Easy, fast onboarding, very friendly staff. Seats were very narrow, OK for me but we were elbow to elbow with both neighbours of small size. The seat width should be indicated at the time of booking to prevent an uncomfortable situation with oversized travellers.
Air Transat
7.8
Good
482 reviews
Air Transat
7.8
Good
482 reviews
Check prices

Comfort

7.4

Entertainment

7.1

Overall

7.8

Boarding

7.9

Food

6.8

Crew

8.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

YYZ - YUL

Easy, fast onboarding, very friendly staff. Seats were very narrow, OK for me but we were elbow to elbow with both neighbours of small size. The seat width should be indicated at the time of booking to prevent an uncomfortable situation with oversized travellers.
Air Canada
7.1
Good
10,525 reviews
Air Transat
7.8
Good
482 reviews
Check prices

Comfort

7.4

Entertainment

7.1

Overall

7.8

Boarding

7.9

Food

6.8

Crew

8.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

YYZ - YUL

Easy, fast onboarding, very friendly staff. Seats were very narrow, OK for me but we were elbow to elbow with both neighbours of small size. The seat width should be indicated at the time of booking to prevent an uncomfortable situation with oversized travellers.
Icelandair
7.0
Good
590 reviews
Air Transat
7.8
Good
482 reviews
Check prices

Comfort

7.4

Entertainment

7.1

Overall

7.8

Boarding

7.9

Food

6.8

Crew

8.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

YYZ - YUL

Easy, fast onboarding, very friendly staff. Seats were very narrow, OK for me but we were elbow to elbow with both neighbours of small size. The seat width should be indicated at the time of booking to prevent an uncomfortable situation with oversized travellers.
Lufthansa
6.8
Okay
7,628 reviews
Air Transat
7.8
Good
482 reviews
Check prices

Comfort

7.4

Entertainment

7.1

Overall

7.8

Boarding

7.9

Food

6.8

Crew

8.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

YYZ - YUL

Easy, fast onboarding, very friendly staff. Seats were very narrow, OK for me but we were elbow to elbow with both neighbours of small size. The seat width should be indicated at the time of booking to prevent an uncomfortable situation with oversized travellers.
British Airways
6.7
Okay
7,575 reviews
Air Transat
7.8
Good
482 reviews
Check prices

Comfort

7.4

Entertainment

7.1

Overall

7.8

Boarding

7.9

Food

6.8

Crew

8.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

YYZ - YUL

Easy, fast onboarding, very friendly staff. Seats were very narrow, OK for me but we were elbow to elbow with both neighbours of small size. The seat width should be indicated at the time of booking to prevent an uncomfortable situation with oversized travellers.

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.

  • How long is the flight from London to Region of Ontario?

    Departing from London to Region of Ontario will take you 11h 20m. There are 5734 km between London and Region of Ontario. Both multi-stop and direct flights can be found to your destination and back.

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

    The cheapest airlines for a one-way flight from London to Region of Ontario are WestJet (C$ 262), Air Transat (C$ 342), and TAP AIR PORTUGAL (C$ 386).

  • What are the most popular routes from London to Region of Ontario?

    The most popular route from London to Region of Ontario is London Heathrow - Toronto Pearson Intl. You may also consider London Gatwick - Toronto Pearson Intl or London City - Toronto Pearson Intl.

  • What are the most reliable airlines from London to Region of Ontario?

    No one likes to see their flight delayed. When booking a flight from London to Region of Ontario consider choosing KLM (98%), Air France (98%) or Delta (98%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from London to Region of Ontario?

    While on average a flight from London to Region of Ontario is generally C$ 1,470, our data shows the cheapest flight currently is C$ 510. When looking at the most popular route, (London Heathrow - Toronto Pearson Intl), you can expect to pay C$ 445 for that flight.

  • 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 Region of Ontario?

    Currently, February is the cheapest month in which you can book a flight from London to Region of Ontario (average of C$ 481). Flying from London to Region of Ontario in December is currently the most expensive (average of C$ 693). 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

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Alternative routes for London to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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Edinburgh to Calgary flights
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Top 10 airlines flying from London to Ontario

Discover the top 10 airlines that operate flights from London to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 15 December 2025.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapestC$ 438AverageC$ 1,068FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
IcelandairCheapestC$ 544AverageC$ 743FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
LufthansaCheapestC$ 566AverageC$ 882FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Air TransatCheapestC$ 591AverageC$ 858FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
TAP AIR PORTUGALCheapestC$ 636AverageC$ 997FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
British AirwaysCheapestC$ 638AverageC$ 837FlexibilityNo cancel feeOn-time70%
Search British Airways flights
DeltaCheapestC$ 650AverageC$ 881FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Air CanadaCheapestC$ 651AverageC$ 930FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Virgin AtlanticCheapestC$ 658AverageC$ 820FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
United AirlinesCheapestC$ 726AverageC$ 1,234FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from London to Ontario?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from London to Ontario. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from London to Ontario?

Cheapflights helps you find that perfect flight to Ontario from London by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from London to Ontario with no change fees?

Yes! Cheapflights helps users easily find flights from London to Ontario with no change fees.

Can Cheapflights notify me if prices for flights from London to Ontario become cheaper?

Of course! You can now track prices for flights from London to Ontario and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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