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Cheap flights from London to Ontario from C$ 437

LON — YYZ
11 Oct — 18 Oct1
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

Tue 29/124:45 p.m. -
Nonstop7h 30m
Tue 12/19:15 p.m. -
Nonstop6h 50m
Deal found 10/9C$ 687
Tue 13/109:15 a.m. -
1 stop11h 45m
Tue 27/105:40 p.m. -
1 stop11h 00m
Deal found 8/9C$ 688
Fri 16/1012:40 p.m. -
1 stop13h 00m
Sun 1/119:35 p.m. -
1 stop18h 25m
Deal found 9/9C$ 688
Sat 26/1212:50 p.m. -
Nonstop8h 05m
Sun 10/110:20 p.m. -
Nonstop7h 05m
Deal found 10/9C$ 689
Fri 20/1110:25 p.m. -
2 stops24h 50m
Sat 28/117:40 p.m. -
2 stops22h 25m
Deal found 10/9C$ 689
Sat 26/99:40 a.m. -
Nonstop8h 05m
Mon 5/1011:15 p.m. -
1 stop29h 35m
Deal found 11/9C$ 689
Fri 16/1012:40 p.m. -
1 stop13h 00m
Sun 25/108:00 p.m. -
1 stop11h 20m
Deal found 10/9C$ 689
Wed 23/92:10 p.m. -
1 stop12h 20m
Wed 30/93:35 p.m. -
1 stop12h 00m
Deal found 11/9C$ 689
Tue 20/106:00 a.m. -
1 stop11h 50m
Tue 3/118:05 a.m. -
2 stops18h 05m
Deal found 11/9C$ 691
Sat 7/1111:40 a.m. -
Nonstop8h 20m
Fri 20/119:35 p.m. -
Nonstop7h 10m
Deal found 11/9C$ 691
Tue 3/116:50 a.m. -
2 stops16h 01m
Wed 11/1110:20 a.m. -
2 stops29h 40m
Deal found 10/9C$ 691
Thu 15/106:15 a.m. -
1 stop14h 40m
Mon 26/109:30 p.m. -
Nonstop7h 05m
Deal found 11/9C$ 692

Find flight deals from London to Ontario

Round-trip from

C$ 687

One-way from

C$ 437

Popular in

August

Cheapest in

February

Average price

C$ 789

Good round-trip deal

C$ 824 or less

Good one-way deal

C$ 403 or less
British Airways
  • British Airways
  • 29/12-12/1
  • Nonstop
  • 14h 20m total
  • London to Ontario
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Air Canada
  • Air Canada
  • 5/10-31/12
  • 1 total stop
  • 10h 30m total
  • London to Ontario
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Highest demand for flights based on searches. 10% potential increase in price (C$ 138 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease (C$ 29 potential savings vs. average RT price).
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Average for round-trip flights in September 2026
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Price to beat on a round-trip flight from London (LON) to Ontario.
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Price to beat on a one-way flight from London (LON) to Ontario.
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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

Cheapest round-trip

LondonMontreal

STN London Stansted - YUL Montreal Pierre Elliott Trudeau Intl

STNYUL

London Stansted

Fri 13/11

12:15 p.m.-12:40 p.m.

1 stop29h 25m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

12:00 a.m.-6:00 a.m.

Nonstop0h 00m

C$ 475

LondonMontreal

STN London Stansted - YUL Montreal Pierre Elliott Trudeau Intl

STNYUL

London Stansted

Mon 2/11

4:35 p.m.-12:40 p.m.

1 stop25h 05m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

12:00 a.m.-6:00 a.m.

Nonstop0h 00m

C$ 477

LondonToronto

LGW London Gatwick - YYZ Toronto Pearson Intl

LGWYYZ

London Gatwick

Sat 14/11

11:40 a.m.-3:00 p.m.

Nonstop8h 20m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-6:00 a.m.

Nonstop0h 00m

C$ 486

LondonToronto

LTN London Luton - YYZ Toronto Pearson Intl

LTNYYZ

London Luton

Tue 10/11

5:45 p.m.-2:05 p.m.

1 stop25h 20m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-6:00 a.m.

Nonstop0h 00m

C$ 493

LondonToronto

LTN London Luton - YYZ Toronto Pearson Intl

LTNYYZ

London Luton

Sun 15/11

6:40 p.m.-2:05 p.m.

1 stop24h 25m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-6:00 a.m.

Nonstop0h 00m

C$ 503

LondonToronto

LGW London Gatwick - YYZ Toronto Pearson Intl

LGWYYZ

London Gatwick

Wed 14/10

11:35 a.m.-10:00 p.m.

1 stop15h 25m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-6:00 a.m.

Nonstop0h 00m

C$ 504

LondonToronto

STN London Stansted - YYZ Toronto Pearson Intl

STNYYZ

London Stansted

Thu 24/9

4:15 p.m.-3:50 p.m.

1 stop28h 35m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-6:00 a.m.

Nonstop0h 00m

C$ 506

LondonToronto

LGW London Gatwick - YYZ Toronto Pearson Intl

LGWYYZ

London Gatwick

Mon 2/11

7:00 a.m.-2:05 p.m.

1 stop12h 05m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-6:00 a.m.

Nonstop0h 00m

C$ 506

LondonToronto

LTN London Luton - YYZ Toronto Pearson Intl

LTNYYZ

London Luton

Tue 24/11

5:45 p.m.-2:05 p.m.

1 stop25h 20m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-6:00 a.m.

Nonstop0h 00m

C$ 507

LondonToronto

LGW London Gatwick - YYZ Toronto Pearson Intl

LGWYYZ

London Gatwick

Sun 6/12

9:25 p.m.-3:20 p.m.

2 stops46h 55m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-6:00 a.m.

Nonstop0h 00m

C$ 550

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/9

Showing 1-10 of 60 resultsSorted by cheapest first
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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

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$ 749). Flying from London to Region of Ontario in August is currently the most expensive (average of C$ 1,138). 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?

When flying from London to Region of Ontario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from London to Region of Ontario

The most flights from LON to CAON are scheduled on a Thursday (42 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (28 on average).

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

Airfare is below average for this route at the moment.
London to Region of Ontario flights typically cost between C$ 727 and C$ 953 in December.
The cheapest round-trip price found within the last 5 days was C$ 689 on British Airways (26 Dec-10 Jan).

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

The price you pay for your flight from London to Region of Ontario may vary depending on when you book. For the best chance of a lower fare, look to book 43 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Reviews of airlines servicing Ontario

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
7.7
Good
579 reviews
Check prices

Food

6.8

Entertainment

7.1

Comfort

7.3

Boarding

8.0

Overall

7.7

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Liam,Jun 2025

GLA - YYZ

To and from Glasgow with Air Transat. Excellent flights, food, service. Nothing but praise.
Air Transat
7.7
Good
579 reviews
Air Transat
7.7
Good
579 reviews
Check prices

Food

6.8

Entertainment

7.1

Comfort

7.3

Boarding

8.0

Overall

7.7

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Liam,Jun 2025

GLA - YYZ

To and from Glasgow with Air Transat. Excellent flights, food, service. Nothing but praise.
Air Canada
7.1
Good
11,614 reviews
Air Transat
7.7
Good
579 reviews
Check prices

Food

6.8

Entertainment

7.1

Comfort

7.3

Boarding

8.0

Overall

7.7

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Liam,Jun 2025

GLA - YYZ

To and from Glasgow with Air Transat. Excellent flights, food, service. Nothing but praise.
Icelandair
6.9
Okay
741 reviews
Air Transat
7.7
Good
579 reviews
Check prices

Food

6.8

Entertainment

7.1

Comfort

7.3

Boarding

8.0

Overall

7.7

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Liam,Jun 2025

GLA - YYZ

To and from Glasgow with Air Transat. Excellent flights, food, service. Nothing but praise.
Lufthansa
6.8
Okay
8,218 reviews
Air Transat
7.7
Good
579 reviews
Check prices

Food

6.8

Entertainment

7.1

Comfort

7.3

Boarding

8.0

Overall

7.7

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Liam,Jun 2025

GLA - YYZ

To and from Glasgow with Air Transat. Excellent flights, food, service. Nothing but praise.
British Airways
6.7
Okay
8,212 reviews
Air Transat
7.7
Good
579 reviews
Check prices

Food

6.8

Entertainment

7.1

Comfort

7.3

Boarding

8.0

Overall

7.7

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Liam,Jun 2025

GLA - YYZ

To and from Glasgow with Air Transat. Excellent flights, food, service. Nothing but praise.

Related info for your journey

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

    Departing from London to Region of Ontario will take you 11h 10m. 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 Aer Lingus (C$ 410), TAP AIR PORTUGAL (C$ 426), and KLM (C$ 445).

  • 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 Singapore Airlines (91%), MEA (90%) or SriLankan Airlines (86%) 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$ 2,453, our data shows the cheapest flight currently is C$ 555. When looking at the most popular route, (London Heathrow - Toronto Pearson Intl), you can expect to pay C$ 597 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$ 749). Flying from London to Region of Ontario in August is currently the most expensive (average of C$ 1,138). 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

Top 8 airlines flying from London to Ontario

AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapestC$ 440AverageC$ 717FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
Air TransatCheapestC$ 615AverageC$ 985FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
IcelandairCheapestC$ 648AverageC$ 697FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Air CanadaCheapestC$ 661AverageC$ 989FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
KLMCheapestC$ 673AverageC$ 1,070FlexibilityNo cancel feeOn-time75%
Search KLM flights
British AirwaysCheapestC$ 694AverageC$ 1,070FlexibilityNo cancel feeOn-time70%
Search British Airways flights
LufthansaCheapestC$ 697AverageC$ 982FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Virgin AtlanticCheapestC$ 740AverageC$ 1,100FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights

Fly with Cheapflights

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.

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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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