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

Delta, Air Transat, and Lufthansa can get you from London to Region of Ontario in just under 8h 20m. Your travel time can differ by up to 4h 10m. 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 Icelandair (£149), KLM (£184), and Air Transat (£211).

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 £287. On average you can expect to pay £1,027. The most popular route, (London Heathrow - Toronto Pearson Intl), can usually be booked for £375.

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 MEA (90%), Singapore Airlines (89%) and SriLankan Airlines (85%).

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

Air Canada, Lufthansa and Air Transat are the most popular airlines when flying from London to Region of 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 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.

£252+ Cheap Flights from London to Ontario

Cheap flight deals from London to Ontario

Enter your travel dates to find the best prices.

Cheapest

Best

Direct

Last-minute

One-way

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 12 October 2026.

Tue 15/1216:20 -

1 stop12h 32m

Tue 29/1208:35 -

1 stop16h 20m

Deal found 10/10£365

Mon 9/1120:25 -

1 stop27h 50m

Mon 16/1121:45 -

Nonstop7h 05m

Deal found 10/10£370

Thu 26/1106:45 -

2 stops16h 30m

Sun 29/1119:40 -

2 stops21h 30m

Deal found 11/10£370

Tue 24/1107:15 -

2 stops16h 00m

Sun 29/1119:40 -

2 stops21h 30m

Deal found 9/10£371

Thu 26/1106:45 -

2 stops16h 30m

Tue 1/1219:40 -

2 stops21h 10m

Deal found 11/10£372

Tue 24/1108:50 -

2 stops14h 25m

Sun 29/1119:40 -

2 stops19h 30m

Deal found 9/10£372

Mon 2/1107:40 -

1 stop12h 15m

Mon 9/1120:25 -

1 stop14h 55m

Deal found 12/10£374

Mon 23/1106:35 -

2 stops16h 40m

Thu 3/1219:40 -

2 stops22h 35m

Deal found 11/10£374

Mon 23/1106:10 -

2 stops17h 05m

Mon 7/1219:40 -

2 stops17h 20m

Deal found 12/10£375

Tue 24/1108:50 -

2 stops14h 25m

Mon 7/1219:40 -

2 stops12h 20m

Deal found 7/10£375

Thu 12/1106:45 -

2 stops16h 30m

Tue 24/1119:40 -

2 stops19h 35m

Deal found 11/10£375

Tue 24/1107:45 -

2 stops15h 30m

Tue 1/1219:40 -

2 stops19h 20m

Deal found 10/10£376

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 12 October 2026.

Fri 4/1211:45 -

1 stop12h 30m

Thu 28/121:45 -

Nonstop7h 05m

Deal found 9/10£409

Mon 7/1211:40 -

Nonstop8h 20m

Wed 9/1221:35 -

Nonstop7h 10m

Deal found 7/10£409

Thu 5/1106:30 -

1 stop11h 30m

Sat 28/1114:40 -

1 stop10h 50m

Deal found 7/10£419

Thu 29/1016:10 -

Nonstop7h 55m

Sat 14/1122:20 -

1 stop10h 25m

Deal found 10/10£425

Mon 23/1110:00 -

1 stop14h 45m

Fri 29/106:00 -

2 stops22h 00m

Deal found 11/10£455

Fri 6/1107:30 -

2 stops15h 19m

Fri 13/1114:45 -

2 stops14h 40m

Deal found 7/10£459

Thu 26/1106:00 -

2 stops21h 36m

Thu 3/1205:00 -

1 stop20h 30m

Deal found 12/10£496

Fri 20/1116:40 -

2 stops34h 01m

Wed 2/1222:45 -

2 stops30h 15m

Deal found 11/10£571

Thu 5/1110:00 -

1 stop10h 00m

Wed 5/517:10 -

1 stop17h 50m

Deal found 9/10£600

Sat 6/218:40 -

2 stops28h 16m

Fri 26/212:30 -

2 stops14h 40m

Deal found 8/10£658

Mon 8/310:55 -

1 stop36h 25m

Wed 17/321:15 -

1 stop32h 40m

Deal found 9/10£716

Wed 9/1211:45 -

2 stops16h 41m

Mon 14/1221:45 -

Nonstop7h 05m

Deal found 9/10£431

Sat 14/1121:35 -

1 stop19h 15m

Sat 28/1119:55 -

1 stop19h 15m

Deal found 7/10£449

Tue 15/1207:30 -

2 stops15h 19m

Sun 10/117:55 -

1 stop13h 05m

Deal found 11/10£459

Wed 25/1106:00 -

2 stops17h 40m

Wed 2/1219:20 -

2 stops20h 40m

Deal found 11/10£499

Sat 7/1107:30 -

2 stops15h 19m

Sat 14/1114:57 -

2 stops14h 53m

Deal found 12/10£459

Thu 15/1017:50 -

Nonstop7h 50m

Thu 29/1012:10 -

1 stop15h 35m

Deal found 10/10£468

Sat 21/1118:45 -

1 stop22h 05m

Sat 28/1119:55 -

1 stop18h 40m

Deal found 7/10£469

Sat 31/1011:40 -

Nonstop8h 20m

Tue 3/1121:35 -

Nonstop7h 10m

Deal found 12/10£548

Sat 21/1106:00 -

2 stops32h 55m

Sat 28/1119:20 -

2 stops20h 40m

Deal found 7/10£501

Sat 14/1118:45 -

1 stop22h 05m

Sat 28/1119:55 -

1 stop18h 40m

Deal found 7/10£469

Fri 16/1017:50 -

Nonstop7h 50m

Thu 22/1018:59 -

1 stop12h 06m

Deal found 9/10£474

Thu 29/1013:25 -

Nonstop7h 55m

Sat 7/1118:10 -

1 stop31h 20m

Deal found 7/10£576

Tue 24/1112:05 -

1 stop11h 56m

Fri 29/112:00 -

2 stops15h 25m

Deal found 11/10£483

Wed 4/1110:00 -

1 stop10h 00m

Wed 5/517:10 -

1 stop17h 50m

Deal found 9/10£600

Thu 5/1106:00 -

2 stops21h 36m

Thu 12/1117:10 -

2 stops18h 10m

Deal found 8/10£502

Sat 12/1212:05 -

1 stop11h 52m

Sat 9/110:50 -

2 stops14h 50m

Deal found 11/10£490

Wed 25/1106:00 -

2 stops17h 40m

Wed 2/1219:20 -

1 stop11h 00m

Deal found 11/10£492

Sun 29/1111:40 -

1 stop15h 22m

Wed 2/1217:40 -

1 stop11h 05m

Deal found 7/10£602

Fri 20/1109:00 -

2 stops13h 51m

Wed 2/1212:30 -

2 stops24h 20m

Deal found 8/10£664

Find flight deals from London to Ontario

Round-trip from	£362
One-way from	£252
Popular in	August
Cheapest in	February
Average price	£459
Good round-trip deal	£374 or less
Good one-way deal	£281 or less

Icelandair
6/4-20/4
2 total stops
21h 55m total
London to Ontario

Search Deals

TAP AIR PORTUGAL
11/12-31/12
1 total stop
15h 35m total
London to Ontario

Search Deals

Highest demand for flights based on searches. 10% potential increase in price (£42 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£8 potential savings vs. average return price).

Search Deals

Average for round-trip flights in October 2026

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonToronto

LTN London Luton - YYZ Toronto Pearson Intl

LTNYYZ

London Luton

Fri 11/12

07:15-12:30

1 stop34h 15m

Toronto Pearson Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£264

LondonToronto

LTN London Luton - YYZ Toronto Pearson Intl

LTNYYZ

London Luton

Fri 18/12

07:15-12:30

1 stop34h 15m

Toronto Pearson Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£272

LondonToronto

LGW London Gatwick - YYZ Toronto Pearson Intl

LGWYYZ

London Gatwick

Sun 6/12

11:40-15:00

Nonstop8h 20m

Toronto Pearson Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£278

LondonToronto

LTN London Luton - YYZ Toronto Pearson Intl

LTNYYZ

London Luton

Sat 12/12

09:45-19:50

2 stops39h 05m

Toronto Pearson Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£278

LondonToronto

LTN London Luton - YYZ Toronto Pearson Intl

LTNYYZ

London Luton

Wed 2/12

07:15-12:10

1 stop33h 55m

Toronto Pearson Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£282

LondonToronto

LGW London Gatwick - YYZ Toronto Pearson Intl

LGWYYZ

London Gatwick

Fri 8/1

11:30-12:30

1 stop30h 00m

Toronto Pearson Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£287

LondonToronto

LGW London Gatwick - YYZ Toronto Pearson Intl

LGWYYZ

London Gatwick

Wed 9/12

11:40-15:00

Nonstop8h 20m

Toronto Pearson Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£289

LondonToronto

LGW London Gatwick - YYZ Toronto Pearson Intl

LGWYYZ

London Gatwick

Fri 27/11

09:00-16:15

1 stop12h 15m

Toronto Pearson Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£303

LondonToronto

LHR London Heathrow - YYZ Toronto Pearson Intl

LHRYYZ

London Heathrow

Sat 9/1

07:40-14:55

1 stop12h 15m

Toronto Pearson Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£318

LondonToronto

LGW London Gatwick - YYZ Toronto Pearson Intl

LGWYYZ

London Gatwick

Sat 14/11

18:40-16:15

1 stop26h 35m

Toronto Pearson Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£331

Flights are sorted by cheapest return flights first.

Deals found on 8/10

Showing 1-10 of 60 resultsSorted by cheapest first

...

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.

LGW-YYZ

LHR-YYZ

LTN-YYZ

LGW-YOW

LHR-YOW

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

LON-CAON

LGW-YYZ

LHR-YYZ

LTN-YYZ

LGW-YOW

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 £415). Flying from London to Region of Ontario in August is currently the most expensive (average of £625). 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 Friday (42 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (27 on average).

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 £407 and £571 in April.
The cheapest return price found within the last 5 days was £362 on Icelandair (6 Apr–20 Apr).

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

Booking 90 days in advance of your planned departure date is, on average, the best time to get cheap flights from London to Region of Ontario. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

583 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

583 reviews

Air Transat

7.7

Good

583 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

7.5

Good

694 reviews

Air Transat

7.7

Good

583 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

11,758 reviews

Air Transat

7.7

Good

583 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.

Icelandair

6.9

Okay

758 reviews

Air Transat

7.7

Good

583 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

8,273 reviews

Air Transat

7.7

Good

583 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?
Delta, Air Transat, and Lufthansa can get you from London to Region of Ontario in just under 8h 20m. Your travel time can differ by up to 4h 10m. 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 Icelandair (£149), KLM (£184), and Air Transat (£211).
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 MEA (90%), Singapore Airlines (89%) and SriLankan Airlines (85%).
What are the cheapest flights from London to Region of Ontario?
The cheapest flight price from London to Region of Ontario is £287. On average you can expect to pay £1,027. The most popular route, (London Heathrow - Toronto Pearson Intl), can usually be booked for £375.
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, February is the cheapest month in which you can book a flight from London to Region of Ontario (average of £415). Flying from London to Region of Ontario in August is currently the most expensive (average of £625). 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

Alternative routes

Complete your trip

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Alternative routes for London to Ontario

Heathrow to Pearson Intl flights

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Gatwick to Pearson Intl flights

Heathrow to Toronto Island flights

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Stansted to Pearson Intl flights

Heathrow to Calgary flights

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Heathrow to Ottawa flights

Luton to Pierre Elliott Trudeau Intl flights

Stansted to Pierre Elliott Trudeau Intl flights

Stansted to Calgary flights

Southend to Pearson Intl flights

Edinburgh to Pearson Intl flights

Manchester to Toronto Island flights

Gatwick to Halifax flights

Gatwick to Ottawa flights

London City to Halifax flights

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London City to Abbotsford flights

London City to Ottawa flights

Heathrow to Winnipeg flights

Manchester to Abbotsford flights

Stansted to Halifax flights

Edinburgh to Toronto Island flights

Heathrow to Edmonton flights

Gatwick to Abbotsford flights

Gatwick to Winnipeg flights

Edinburgh to Vancouver Intl flights

Gatwick to Edmonton flights

Manchester to Calgary flights

Heathrow to Victoria flights

Birmingham to Pearson Intl flights

Edinburgh to Calgary flights

Top 10 airlines flying from London to Ontario

Airline	Cheapest	Average	Flexibility	On-time
ITA Airways	Cheapest£268	Average£683	FlexibilityNo cancel fee	On-time81%	Search ITA Airways flights
Icelandair	Cheapest£276	Average£428	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Finnair	Cheapest£287	Average£570	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
TAP AIR PORTUGAL	Cheapest£339	Average£569	FlexibilityNo cancel fee	On-timeN/A	Search TAP AIR PORTUGAL flights
Virgin Atlantic	Cheapest£341	Average£559	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Air Canada	Cheapest£344	Average£601	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Air Transat	Cheapest£345	Average£520	FlexibilityNo cancel fee	On-time50%	Search Air Transat flights
Lufthansa	Cheapest£362	Average£572	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
British Airways	Cheapest£365	Average£540	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
WestJet	Cheapest£366	Average£562	FlexibilityNo cancel fee	On-time60%	Search WestJet 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 £252

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/12. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from London to Ontario

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 12 October 2026.

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 12 October 2026.

Best flights from London to OntarioDiscover 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 12 October 2026.

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 12 October 2026.

Direct flights from London to OntarioExplore direct flight options from London to Ontario based on user searches, and compare prices and availability for your desired travel dates. Data last updated 12 October 2026.

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 12 October 2026.

Last-minute flights from London to OntarioDiscover last-minute flight deals from London to Ontario. Data last updated 12 October 2026 and is based on user searches.

Discover last-minute flight deals from London to Ontario. Data last updated 12 October 2026 and is based on user searches.

One-way flights from London to OntarioSearch for one-way flight options from London to Ontario. Find affordable one-way fares based on user searches. Data last updated 12 October 2026.

Search for one-way flight options from London to Ontario. Find affordable one-way fares based on user searches. Data last updated 12 October 2026.

Find flight deals from London to Ontario

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

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

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 12 October 2026.

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

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 12 October 2026.

The most flights from LON to CAON are scheduled on a Friday (42 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (27 on average).

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 £407 and £571 in April.The cheapest return price found within the last 5 days was £362 on Icelandair (6 Apr–20 Apr).

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

Booking 90 days in advance of your planned departure date is, on average, the best time to get cheap flights from London to Region of Ontario. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

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?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for London to Ontario

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Ontario by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to Canada

Book a non-stop flight to one of these other cities located in Canada.

Search flights from London to Ontario by cabin class

Find flights from London to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.

London and Ontario flights

Browse other London and Ontario flight options. Last updated on 12 October 2026.

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London to Ontario flights

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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 12 October 2026.

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 12 October 2026.

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 12 October 2026.

Last-minute flights from London to Ontario
Discover last-minute flight deals from London to Ontario. Data last updated 12 October 2026 and is based on user searches.

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 12 October 2026.

London to Region of Ontario flights typically cost between £407 and £571 in April.
The cheapest return price found within the last 5 days was £362 on Icelandair (6 Apr–20 Apr).