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

Air Canada, Air Transat, and Icelandair can get you from London to Region of Ontario in just under 11h 20m. Your travel time can differ by up to 4h 25m. There are 3563 mi between London and Region of Ontario. This flight may include one or multiple stops.

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

The cheapet airlines for a one-way flight from London to Region of Ontario are WestJet (£249), British Airways (£253), and Finnair (£272).

In terms of precipitation, rainfall in Region of Ontario ranges from 51.0 - 83.0 inches per month. June is typically the wettest month, when rainfall can reach 83.0 mm. February is typically the driest time to visit Region of Ontario when rainfall is around 51.0 mm.

If weather is an important factor for your trip to Region of Ontario, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 21.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -6.0 C).

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 Heathrow - Toronto Island.

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

The cheapest flight price from London to Region of Ontario is £349. On average you can expect to pay £1,117. The most popular route, (London Heathrow - Toronto Pearson Intl), can usually be booked for £295.

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

The top 3 most reliable airlines when flying from London to Region of Ontario are Thai Airways (77%), KLM (77%) and Air France (77%).

What are the most popular airlines that fly from London to Region of Ontario?

American Airlines, Air Canada and Air France are the most popular airlines when flying from London to Region of Ontario.

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

Users have found that booking a flight from London to Region of Ontario at least 60 days early can save you up to 20% on average compared to booking a flight this week. If booking 60 days before your flight isn’t an option for you, users have found flights from London to Region of Ontario for as little as £409 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as £490 for flights departing within the next 3 days.

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

Due to multiple factors, expect to potentially pay more when booking in December. For low rates, February can be a great choice for travel to Region of Ontario. Flights to Region of Ontario from London in February are about £416 on average during February, but can be found for as low as £271.

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 holiday 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.

£232+ Flights from London to Ontario

Q: How much does it cost for a return flight 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 £349 and £456 in November. The cheapest return flight price found within the last 3 days was £346 on Virgin Atlantic (5 Nov-19 Nov).

Cheap flight deals from London to Ontario

Round-trip from	£346
One-way from	£232
Popular in	December
Cheapest in	February
Average price	£378
Good round-trip deal	£365 or less
Good one-way deal	£289 or less

Virgin Atlantic
5/11-19/11
Nonstop
15h 50m total
London to Ontario

Search Deals

15/12
2 total stops
45h 27m total
London to Ontario

Search Deals

Highest demand for flights based on searches. 4% potential increase in price (£13 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 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

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 15 September 2025.

Fri 10/1011:35LGW - YTZ

1 stop14h 15mAir Transat

Mon 13/1018:55YTZ - LGW

1 stop9h 55mAir Transat

Deal found 13/9£346

Sat 6/1207:40LHR - YYZ

1 stop12h 10mLufthansa

Mon 29/1223:00YYZ - LHR

Nonstop7h 20mLufthansa

Deal found 13/9£346

Sat 20/911:35LGW - YYZ

1 stop15h 06mAir Transat

Sun 28/922:45YYZ - LGW

Nonstop7h 00mAir Transat

Deal found 14/9£346

Wed 8/1006:00LHR - YTZ

2 stops16h 45mAir Canada

Sun 19/1015:25YTZ - LHR

1 stop10h 05mAir Canada

Deal found 15/9£346

Mon 22/911:35LGW - YTZ

1 stop11h 35mAir Transat

Sun 28/921:00YTZ - LGW

1 stop31h 50mAir Transat

Deal found 13/9£346

Wed 22/1008:40LHR - YYZ

1 stop12h 45mAir Canada

Tue 28/1020:55YYZ - LHR

1 stop19h 40mAir Canada

Deal found 14/9£346

Thu 23/1012:40LGW - YYZ

Nonstop8h 00mAir Transat

Sun 14/1221:35YYZ - LGW

Nonstop7h 10mAir Transat

Deal found 15/9£346

Sun 9/1106:50LHR - YTZ

2 stops30h 20mAir Canada

Wed 19/1110:25YTZ - LHR

2 stops15h 45mAir Canada

Deal found 13/9£346

Thu 4/1209:30LHR - YYZ

1 stop11h 45mLufthansa

Tue 6/118:10YYZ - LHR

Nonstop7h 20mLufthansa

Deal found 14/9£347

Thu 20/1111:40LGW - YYZ

Nonstop8h 20mAir Transat

Wed 3/1221:35YYZ - LGW

Nonstop7h 10mAir Transat

Deal found 14/9£347

Tue 23/906:00LHR - YTZ

2 stops15h 45mAir Canada

Sun 28/908:50YTZ - LHR

2 stops16h 40mAir Canada

Deal found 15/9£347

Fri 10/1011:35LGW - YTZ

1 stop15h 45mAir Transat

Thu 16/1014:45YTZ - LGW

1 stop14h 05mAir Transat

Deal found 13/9£348

Best flights from London to Ontario
Discover carefully curated flight deals from London to Ontario that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 15 September 2025.

Mon 19/106:50LHR - YTZ

2 stops13h 05mAir Canada

Thu 22/110:25YTZ - LHR

2 stops15h 45mAir Canada

Deal found 13/9£346

Fri 10/1011:35LGW - YTZ

1 stop15h 45mAir Transat

Thu 16/1014:45YTZ - LGW

1 stop14h 05mAir Transat

Deal found 13/9£348

Wed 11/311:55LGW - YYZ

1 stop11h 20mIcelandair

Sun 15/320:40YYZ - LGW

1 stop10h 15mIcelandair

Deal found 14/9£350

Thu 6/1106:30STN - YYZ

2 stops16h 45mMultiple Airlines

Wed 12/1119:40YYZ - STN

2 stops22h 10mMultiple Airlines

Deal found 13/9£355

Sat 7/207:40LHR - YUL

1 stop15h 40mLufthansa

Tue 10/215:10YUL - LHR

1 stop10h 20mLufthansa

Deal found 13/9£361

Sat 4/1017:50LHR - YYZ

Nonstop7h 50mDelta

Sun 1/321:15YYZ - LHR

Nonstop7h 20mDelta

Deal found 15/9£380

Wed 29/1008:30LHR - YYZ

2 stops16h 51mUnited Airlines

Wed 5/1114:45YYZ - LHR

1 stop10h 55mUnited Airlines

Deal found 13/9£381

Wed 5/1110:00LCY - YUL

1 stop12h 20mKLM

Mon 17/1119:10YUL - LCY

1 stop9h 20mKLM

Deal found 13/9£386

Thu 9/1009:25LCY - YYZ

1 stop12h 00mSWISS

Sun 19/1020:15YYZ - LCY

1 stop11h 15mSWISS

Deal found 15/9£390

Sun 30/1121:25LGW - YYZ

2 stops28h 50mTAP AIR PORTUGAL

Sun 7/1222:45YYZ - LGW

1 stop12h 00mTAP AIR PORTUGAL

Deal found 14/9£406

Fri 23/109:20LCY - YUL

1 stop13h 00mVirgin Atlantic

Mon 2/216:55YUL - LCY

2 stops19h 25mVirgin Atlantic

Deal found 13/9£413

Sun 9/1106:50LHR - YTZ

2 stops19h 45mAir Canada

Wed 19/1108:30YTZ - LHR

1 stop17h 40mAir Canada

Deal found 14/9£349

Direct flights from London to Ontario
Explore direct flight options from London to Ontario based on user searches, and compare prices and availability for your desired travel dates. Data last updated 15 September 2025.

Wed 5/1114:30LHR - YYZ

Nonstop8h 30mVirgin Atlantic

Wed 19/1121:15YYZ - LHR

Nonstop7h 20mVirgin Atlantic

Deal found 14/9£346

Tue 14/1008:30LHR - YYZ

Nonstop7h 55mAir Canada

Wed 22/1023:35YYZ - LHR

Nonstop7h 15mAir Canada

Deal found 14/9£346

Thu 30/1011:40LGW - YYZ

Nonstop8h 20mAir Transat

Thu 6/1121:35YYZ - LGW

Nonstop7h 10mAir Transat

Deal found 15/9£346

Sun 30/1116:00LHR - YYZ

Nonstop8h 25mVirgin Atlantic

Sun 7/1221:15YYZ - LHR

Nonstop7h 20mVirgin Atlantic

Deal found 14/9£347

Thu 20/1111:40LGW - YYZ

Nonstop8h 20mAir Transat

Wed 3/1221:35YYZ - LGW

Nonstop7h 10mAir Transat

Deal found 14/9£347

Thu 25/915:50LHR - YYZ

Nonstop7h 55mAir Canada

Sun 28/923:35YYZ - LHR

Nonstop7h 15mAir Canada

Deal found 13/9£348

Fri 17/1008:30LHR - YYZ

Nonstop7h 55mAir Canada

Fri 24/1023:35YYZ - LHR

Nonstop7h 15mAir Canada

Deal found 14/9£349

Wed 1/1008:30LHR - YYZ

Nonstop7h 55mAir Canada

Wed 22/1021:30YYZ - LHR

Nonstop7h 30mAir Canada

Deal found 14/9£349

Tue 13/111:40LGW - YYZ

Nonstop8h 20mAir Transat

Sun 25/121:35YYZ - LGW

Nonstop7h 10mAir Transat

Deal found 13/9£349

Thu 2/1017:50LHR - YYZ

Nonstop7h 50mVirgin Atlantic

Thu 16/1022:30YYZ - LHR

Nonstop7h 10mVirgin Atlantic

Deal found 13/9£350

Tue 2/1211:40LGW - YYZ

Nonstop8h 20mAir Transat

Wed 10/1221:35YYZ - LGW

Nonstop7h 10mAir Transat

Deal found 14/9£350

Wed 1/1012:40LGW - YYZ

Nonstop8h 00mAir Transat

Sat 18/1022:45YYZ - LGW

Nonstop7h 00mAir Transat

Deal found 14/9£351

Last-minute flights from London to Ontario
Discover last-minute flight deals from London to Ontario. Data last updated 15 September 2025 and is based on user searches.

Wed 17/922:00STN - YYZ

2 stops27h 00mMultiple Airlines

Mon 6/1022:10YYZ - STN

1 stop15h 10mMultiple Airlines

Deal found 13/9£348

Sat 20/915:50LHR - YYZ

Nonstop7h 55mAir Canada

Sun 5/1023:35YYZ - LHR

Nonstop7h 15mAir Canada

Deal found 13/9£346

Sat 20/911:35LGW - YYZ

1 stop15h 06mAir Transat

Sun 28/922:45YYZ - LGW

Nonstop7h 00mAir Transat

Deal found 14/9£346

Mon 22/911:35LGW - YTZ

1 stop11h 35mAir Transat

Sun 28/921:00YTZ - LGW

1 stop31h 50mAir Transat

Deal found 13/9£346

Tue 23/906:00LHR - YTZ

2 stops15h 45mAir Canada

Sun 28/917:25YTZ - LHR

1 stop11h 10mAir Canada

Deal found 15/9£347

Wed 24/906:00LHR - YYZ

1 stop12h 50mMultiple Airlines

Sun 28/923:35YYZ - LHR

Nonstop7h 15mMultiple Airlines

Deal found 13/9£346

Thu 25/915:50LHR - YYZ

Nonstop7h 55mAir Canada

Sun 28/923:35YYZ - LHR

Nonstop7h 15mAir Canada

Deal found 13/9£348

Wed 8/1006:00LHR - YTZ

2 stops15h 45mAir Canada

Sat 18/1015:25YTZ - LHR

1 stop10h 05mAir Canada

Deal found 15/9£346

Fri 10/1011:35LGW - YTZ

1 stop14h 15mAir Transat

Mon 13/1018:55YTZ - LGW

1 stop9h 55mAir Transat

Deal found 13/9£346

Fri 10/1011:35LGW - YTZ

1 stop15h 45mAir Transat

Thu 16/1014:45YTZ - LGW

1 stop14h 05mAir Transat

Deal found 13/9£348

Thu 23/1012:40LGW - YYZ

Nonstop8h 00mAir Transat

Sun 14/1221:35YYZ - LGW

Nonstop7h 10mAir Transat

Deal found 15/9£346

Thu 30/1006:50LHR - YTZ

2 stops15h 05mAir Canada

Fri 7/1118:45YTZ - LHR

2 stops44h 50mAir Canada

Deal found 13/9£346

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 15 September 2025.

Mon 15/1208:15LHR - YOW

2 stops45h 27mMultiple Airlines

Deal found 13/9£232

Thu 13/1115:15LHR - YUL

1 stop33h 25mMultiple Airlines

Deal found 13/9£234

Mon 15/1208:15LHR - YUL

2 stops53h 00mMultiple Airlines

Deal found 13/9£238

Mon 13/1021:10LHR - YYZ

3 stops56h 33mMultiple Airlines

Deal found 13/9£249

Fri 3/1010:45LGW - YYZ

1 stop11h 25mWestJet

Deal found 14/9£249

Tue 7/1010:00LTN - YYZ

3 stops19h 31mMultiple Airlines

Deal found 13/9£250

Sat 4/1020:10LGW - YYZ

2 stops26h 00mMultiple Airlines

Deal found 13/9£250

Mon 22/911:35LGW - YTZ

1 stop15h 45mAir Transat

Deal found 14/9£251

Fri 20/207:50LHR - YYZ

1 stop13h 05mAer Lingus

Deal found 15/9£251

Tue 23/911:35LGW - YTZ

1 stop15h 45mAir Transat

Deal found 14/9£251

Wed 22/1006:05LTN - YYZ

1 stop13h 20mMultiple Airlines

Deal found 13/9£251

Tue 23/911:35LGW - YYZ

1 stop28h 51mAir Transat

Deal found 14/9£251

Fly from

Fly to

Route

Depart

Return

Price

LondonToronto

LHR - YTZ

LHRYTZ

London Heathrow

Mon 19/1

06:50-14:55

2 stops13h 05m

Toronto Island

Thu 22/1

10:25-07:10

2 stops15h 45m

£346

LondonToronto

LGW - YTZ

LGWYTZ

London Gatwick

Fri 10/10

11:35-22:20

1 stop15h 45m

Toronto Island

Thu 16/10

14:45-09:50

1 stop14h 05m

£348

LondonToronto

LHR - YTZ

LHRYTZ

London Heathrow

Sun 9/11

06:50-21:35

2 stops19h 45m

Toronto Island

Wed 19/11

08:30-07:10

1 stop17h 40m

£349

LondonToronto

LHR - YTZ

LHRYTZ

London Heathrow

Thu 4/12

06:50-14:55

2 stops13h 05m

Toronto Island

Mon 8/12

15:30-07:10

1 stop10h 40m

£349

LondonToronto

LHR - YTZ

LHRYTZ

London Heathrow

Thu 20/11

06:50-14:55

2 stops13h 05m

Toronto Island

Mon 8/12

15:30-07:10

1 stop10h 40m

£349

LondonToronto

LGW - YYZ

LGWYYZ

London Gatwick

Wed 11/3

11:55-19:15

1 stop11h 20m

Toronto Pearson Intl

Sun 15/3

20:40-10:55

1 stop10h 15m

£350

LondonToronto

STN - YYZ

STNYYZ

London Stansted

Thu 6/11

06:30-18:15

2 stops16h 45m

Toronto Pearson Intl

Wed 12/11

19:40-22:50

2 stops22h 10m

£355

LondonToronto

STN - YYZ

STNYYZ

London Stansted

Thu 6/11

06:30-18:15

2 stops16h 45m

Toronto Pearson Intl

Sun 9/11

19:40-21:20

2 stops20h 40m

£355

LondonMontreal

LHR - YUL

LHRYUL

London Heathrow

Sat 7/2

07:40-18:20

1 stop15h 40m

Montreal Pierre Elliott Trudeau Intl

Tue 10/2

15:10-06:30

1 stop10h 20m

£361

LondonToronto

LTN - YYZ

LTNYYZ

London Luton

Thu 6/11

09:00-18:15

2 stops14h 15m

Toronto Pearson Intl

Sun 9/11

19:40-22:00

2 stops21h 20m

£361

Flights are sorted by cheapest return flights first.

Deals found on 13/9

Showing 1-10 of 60 results

...

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 return 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, January is the cheapest month in which you can book a flight from London to Region of Ontario (average of £490). Flying from London to Region of Ontario in July is currently the most expensive (average of £708). 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 Sunday (43 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (33 on average).

How much does it cost for a return flight from London to Region of Ontario?

Reviews of airlines servicing Ontario

Read reviews from past customers who have flown with Air Transat, Virgin Atlantic, andAir Canada 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

438 reviews

Check prices

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

438 reviews

Air Transat

7.7

Good

438 reviews

Check prices

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.

Virgin Atlantic

7.4

Good

664 reviews

Air Transat

7.7

Good

438 reviews

Check prices

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

10,000 reviews

Air Transat

7.7

Good

438 reviews

Check prices

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

7,407 reviews

Air Transat

7.7

Good

438 reviews

Check prices

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

7,361 reviews

Air Transat

7.7

Good

438 reviews

Check prices

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?
Air Canada, Air Transat, and Icelandair can get you from London to Region of Ontario in just under 11h 20m. Your travel time can differ by up to 4h 25m. There are 3563 mi between London and Region of Ontario. This flight may include one or multiple stops.
What are the cheapest airlines to fly from London to Region of Ontario one-way?
The cheapet airlines for a one-way flight from London to Region of Ontario are WestJet (£249), British Airways (£253), and Finnair (£272).
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 Heathrow - Toronto Island.
What are the most reliable airlines from London to Region of Ontario?
The top 3 most reliable airlines when flying from London to Region of Ontario are Thai Airways (77%), KLM (77%) and Air France (77%).
What are the cheapest flights from London to Region of Ontario?
The cheapest flight price from London to Region of Ontario is £349. On average you can expect to pay £1,117. The most popular route, (London Heathrow - Toronto Pearson Intl), can usually be booked for £295.
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 holiday 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, January is the cheapest month in which you can book a flight from London to Region of Ontario (average of £490). Flying from London to Region of Ontario in July is currently the most expensive (average of £708). 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 10 airlines flying from London to Ontario

Airline	Cheapest	Average	Flexibility	On-time
PLAY	Cheapest£256	Average£263	FlexibilityNo cancel fee	On-timeN/A	Search PLAY flights
Icelandair	Cheapest£285	Average£364	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Lufthansa	Cheapest£296	Average£472	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Scandinavian Airlines	Cheapest£296	Average£442	FlexibilityNo cancel fee	On-time77%	Search Scandinavian Airlines flights
Aer Lingus	Cheapest£297	Average£505	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
Air Transat	Cheapest£298	Average£423	FlexibilityNo cancel fee	On-time50%	Search Air Transat flights
Air Canada	Cheapest£301	Average£497	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
TAP AIR PORTUGAL	Cheapest£304	Average£525	FlexibilityNo cancel fee	On-timeN/A	Search TAP AIR PORTUGAL flights
Delta	Cheapest£316	Average£494	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights
Virgin Atlantic	Cheapest£326	Average£431	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights

Fly with Cheapflights

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

When you search for this flight from London to Ontario, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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

Millions of users choose and trust Cheapflights to book the best flight deals from London to Ontario for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Certainly. Search results for flights to Ontario from London shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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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Cheap flights from London to Ontario from £232

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 15/12. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap 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 September 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

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 15 September 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 15 September 2025.

Cheapflights Fare Finder

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

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

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

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 September 2025.

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 September 2025.

How much does it cost for a return flight from London to Region of Ontario?

Reviews of airlines servicing Ontario

Read reviews from past customers who have flown with Air Transat, Virgin Atlantic, andAir Canada from London to Ontario. Reviews also offer insight into each airline's 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.

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

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

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

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

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

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Alternative routes for London to Ontario

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Top 10 airlines flying from 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 15 September 2025.