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

£168 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on TAP AIR PORTUGAL and Azores Airlines, with prices starting from £247 and £253, respectively.

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

When deciding which route to take from Region of Ontario to London Heathrow Airport consider Toronto Pearson Intl - London Heathrow, Montreal Pierre Elliott Trudeau Intl - London Heathrow or Toronto Island - London Heathrow as they are the most popular.

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

Looking for the cheapest flight from Region of Ontario to London Heathrow Airport? While on average our users pay £889, our data indicates the cheapest price to be £333. The most popular route (Toronto Pearson Intl - London Heathrow), is priced around £359.

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

No one likes to see their flight delayed. When booking a flight from Region of Ontario to London Heathrow Airport consider choosing Singapore Airlines (75%), SriLankan Airlines (62%) or MEA (62%) as they are the most reliable in getting you off to your destination on time.

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

Air Canada, Air France and British Airways are the most popular airlines when flying from Region of Ontario to London Heathrow Airport.

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

To save up to 26% on this flight, we recommend booking at least 56 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Region of Ontario to London Heathrow Airport from £527 1-2 weeks out and tickets from £622 for flights departing within the next 72 hours.

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

February can be a great time to fly to London Heathrow Airport from Region of Ontario with a flight ticket averaging about £506. Cheapflights users have found deals in the month of February for as cheap as £296. The most expensive prices can be found in the month of December.

Can I find deals for flights from Ontario to Heathrow that include hotel bookings?

Yes. In addition to deals on Ontario to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Ontario to Heathrow?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Heathrow.

Can I find deals for business class flights from Ontario to Heathrow?

Yes. Cheapflights offers flight deals from Ontario to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£168+ Flights from Ontario to London Heathrow Airport

Cheap flight deals from Ontario to Heathrow

Round-trip from	£385
One-way from	£168
Good round-trip deal	£460 or less
Good one-way deal	£339 or less

Icelandair
31/3-30/4
2 total stops
21h 10m total
Ontario to London

Search Deals

WestJet
29/3
1 total stop
24h 50m total
Ontario to London

Search Deals

Price to beat on a round-trip flight from Ontario to London Heathrow.

Search Deals

Price to beat on a one-way flight from Ontario to London Heathrow.

Search Deals

Find flight deals from Ontario to Heathrow

Cheapest flights from Ontario to Heathrow
Explore the most affordable flight options available from Ontario to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 January 2025.

Mon 31/320:50YYZ - LHR

1 stop10h 05mIcelandair

Wed 30/413:05LHR - YYZ

1 stop11h 05mIcelandair

Deal found 21/1£385

Tue 18/321:10YYZ - LHR

Nonstop7h 20mMultiple Airlines

Mon 24/313:30LHR - YYZ

1 stop11h 25mMultiple Airlines

Deal found 21/1£388

Mon 3/208:50YTZ - LHR

2 stops17h 20mAir Canada

Tue 22/406:00LHR - YTZ

2 stops15h 50mAir Canada

Deal found 21/1£393

Wed 5/218:20YHM - LHR

2 stops16h 15mMultiple Airlines

Mon 10/207:50LHR - YHM

2 stops14h 20mMultiple Airlines

Deal found 21/1£396

Fri 28/218:10YYZ - LHR

Nonstop7h 20mAir Canada

Sun 9/319:25LHR - YYZ

1 stop24h 10mAir Canada

Deal found 21/1£396

Fri 24/118:05YYZ - LHR

1 stop11h 25mVirgin Atlantic

Sun 26/108:40LHR - YYZ

1 stop12h 00mVirgin Atlantic

Deal found 21/1£410

Mon 3/322:05YYZ - LHR

Nonstop7h 10mBritish Airways

Mon 10/317:05LHR - YYZ

Nonstop8h 10mBritish Airways

Deal found 21/1£431

Sun 16/322:45YUL - LHR

1 stop19h 55mTAP AIR PORTUGAL

Mon 31/306:00LHR - YUL

1 stop20h 10mTAP AIR PORTUGAL

Deal found 21/1£447

Wed 23/423:00YYZ - LHR

1 stop13h 45mTAP AIR PORTUGAL

Mon 28/413:45LHR - YYZ

1 stop12h 15mTAP AIR PORTUGAL

Deal found 21/1£448

Fri 7/220:10YYZ - LHR

Nonstop7h 20mLufthansa

Thu 27/206:35LHR - YYZ

1 stop13h 20mLufthansa

Deal found 21/1£454

Mon 3/221:25YUL - LHR

2 stops20h 15mMultiple Airlines

Mon 10/208:15LHR - YUL

2 stops16h 50mMultiple Airlines

Deal found 21/1£463

Wed 12/212:25YTZ - LHR

2 stops14h 40mMultiple Airlines

Sun 2/306:50LHR - YTZ

2 stops13h 00mMultiple Airlines

Deal found 21/1£466

Best flights from Ontario to Heathrow
Discover carefully curated flight deals from Ontario to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 22 January 2025.

Mon 31/320:50YYZ - LHR

1 stop10h 05mIcelandair

Wed 30/413:05LHR - YYZ

1 stop11h 05mIcelandair

Deal found 21/1£385

Tue 18/314:00YYZ - LHR

1 stop13h 10mMultiple Airlines

Mon 24/313:30LHR - YYZ

1 stop11h 25mMultiple Airlines

Deal found 21/1£388

Wed 16/416:20YTZ - LHR

1 stop11h 15mAir Canada

Mon 21/406:50LHR - YTZ

2 stops15h 00mAir Canada

Deal found 20/1£393

Mon 3/322:05YYZ - LHR

Nonstop7h 10mBritish Airways

Mon 10/317:05LHR - YYZ

Nonstop8h 10mBritish Airways

Deal found 21/1£431

Sun 16/322:45YUL - LHR

1 stop19h 55mTAP AIR PORTUGAL

Mon 31/306:00LHR - YUL

1 stop20h 10mTAP AIR PORTUGAL

Deal found 21/1£447

Mon 3/222:55YYZ - LHR

1 stop12h 40mVirgin Atlantic

Fri 14/208:40LHR - YYZ

1 stop12h 00mVirgin Atlantic

Deal found 21/1£451

Fri 7/218:10YYZ - LHR

Nonstop7h 20mLufthansa

Fri 28/207:40LHR - YYZ

1 stop12h 15mLufthansa

Deal found 21/1£454

Fri 7/218:05YYZ - LHR

1 stop33h 15mAustrian Airlines

Thu 27/209:05LHR - YYZ

1 stop34h 30mAustrian Airlines

Deal found 21/1£474

Mon 3/222:05YYZ - LHR

Nonstop7h 10mAmerican Airlines

Wed 26/311:45LHR - YYZ

Nonstop8h 10mAmerican Airlines

Deal found 20/1£479

Tue 18/217:20YOW - LHR

1 stop9h 40mAir France

Tue 25/206:20LHR - YOW

1 stop13h 50mAir France

Deal found 21/1£479

Thu 17/422:30YYZ - LHR

Nonstop7h 10mDelta

Mon 21/411:45LHR - YYZ

1 stop26h 05mDelta

Deal found 21/1£490

Thu 27/216:00YYZ - LHR

1 stop12h 10mUnited Airlines

Wed 5/307:10LHR - YYZ

2 stops15h 36mUnited Airlines

Deal found 21/1£499

Direct flights from Ontario to Heathrow
Explore direct flight options from Ontario to Heathrow based on user searches, and compare prices and availability for your desired travel dates. Data last updated 22 January 2025.

Wed 19/300:40YYZ - LHR

Nonstop7h 10mAir Canada

Tue 25/311:10LHR - YYZ

Nonstop8h 15mAir Canada

Deal found 21/1£420

Mon 3/322:05YYZ - LHR

Nonstop7h 10mBritish Airways

Mon 10/317:05LHR - YYZ

Nonstop8h 10mBritish Airways

Deal found 21/1£431

Sat 5/422:30YYZ - LHR

Nonstop7h 10mVirgin Atlantic

Mon 21/417:50LHR - YYZ

Nonstop7h 50mVirgin Atlantic

Deal found 21/1£454

Wed 12/218:10YYZ - LHR

Nonstop7h 20mLufthansa

Mon 17/218:00LHR - YYZ

Nonstop8h 40mLufthansa

Deal found 21/1£459

Mon 3/218:00YYZ - LHR

Nonstop7h 15mMultiple Airlines

Mon 24/217:05LHR - YYZ

Nonstop8h 10mMultiple Airlines

Deal found 21/1£475

Mon 3/218:00YYZ - LHR

Nonstop7h 15mAmerican Airlines

Fri 14/211:45LHR - YYZ

Nonstop8h 10mAmerican Airlines

Deal found 20/1£477

Mon 10/320:15YUL - LHR

Nonstop6h 55mAir Canada

Mon 24/315:00LHR - YUL

Nonstop7h 40mAir Canada

Deal found 21/1£490

Sun 15/622:00YUL - LHR

Nonstop6h 40mBritish Airways

Sat 28/618:05LHR - YUL

Nonstop7h 10mBritish Airways

Deal found 20/1£503

Sun 1/622:25YUL - LHR

Nonstop6h 35mLufthansa

Sat 14/609:30LHR - YUL

Nonstop7h 10mLufthansa

Deal found 20/1£503

Sun 15/622:00YUL - LHR

Nonstop6h 40mAmerican Airlines

Sun 29/618:05LHR - YUL

Nonstop7h 10mAmerican Airlines

Deal found 21/1£521

Sun 27/422:30YYZ - LHR

Nonstop7h 10mDelta

Wed 7/517:50LHR - YYZ

Nonstop7h 50mDelta

Deal found 21/1£538

Mon 10/321:50YUL - LHR

Nonstop6h 50mFinnair

Sat 22/316:30LHR - YUL

Nonstop7h 35mFinnair

Deal found 21/1£562

Last-minute flights from Ontario to Heathrow
Discover last-minute flight deals from Ontario to Heathrow. Data last updated 22 January 2025 and is based on user searches.

Fri 24/118:05YYZ - LHR

1 stop11h 25mVirgin Atlantic

Sun 26/108:40LHR - YYZ

1 stop12h 00mVirgin Atlantic

Deal found 21/1£410

Fri 24/118:05YYZ - LHR

1 stop12h 05mKLM

Sun 26/108:40LHR - YYZ

1 stop12h 00mKLM

Deal found 21/1£424

Mon 27/108:50YTZ - LHR

2 stops17h 20mAir Canada

Sun 2/219:25LHR - YTZ

2 stops26h 25mAir Canada

Deal found 20/1£403

Mon 27/123:25YYZ - LHR

Nonstop7h 25mAir Canada

Mon 3/206:00LHR - YYZ

1 stop13h 35mAir Canada

Deal found 20/1£411

Mon 27/108:55YTZ - LHR

2 stops31h 40mMultiple Airlines

Mon 3/218:30LHR - YTZ

2 stops27h 55mMultiple Airlines

Deal found 20/1£452

Mon 27/115:50YYZ - LHR

2 stops24h 45mMultiple Airlines

Mon 3/218:30LHR - YYZ

2 stops32h 11mMultiple Airlines

Deal found 20/1£461

Tue 28/118:35YYZ - LHR

1 stop14h 10mDelta

Sat 1/211:15LHR - YYZ

1 stop13h 00mDelta

Deal found 21/1£468

Tue 28/117:20YOW - LHR

1 stop15h 25mVirgin Atlantic

Thu 6/206:20LHR - YOW

1 stop13h 50mVirgin Atlantic

Deal found 20/1£481

Tue 28/117:20YOW - LHR

1 stop18h 15mAir France

Wed 5/214:45LHR - YOW

1 stop29h 25mAir France

Deal found 20/1£490

Wed 29/117:40YYZ - LHR

Nonstop7h 15mBritish Airways

Mon 3/217:05LHR - YYZ

Nonstop8h 10mBritish Airways

Deal found 20/1£464

Wed 29/117:40YYZ - LHR

Nonstop7h 15mAmerican Airlines

Mon 3/211:45LHR - YYZ

Nonstop8h 10mAmerican Airlines

Deal found 20/1£465

Thu 30/118:00YYZ - LHR

1 stop10h 00mKLM

Sun 2/208:40LHR - YYZ

1 stop12h 00mKLM

Deal found 21/1£473

One-way flights from Ontario to Heathrow
Search for one-way flight options from Ontario to Heathrow. Find affordable one-way fares based on user searches. Data last updated 22 January 2025.

Sat 29/306:15YOW - LHR

1 stop24h 50mWestJet

Deal found 21/1£168

Wed 26/319:20YHM - LHR

1 stop15h 35mMultiple Airlines

Deal found 21/1£209

Tue 25/318:05YHM - LHR

1 stop14h 45mWestJet

Deal found 20/1£210

Tue 11/308:00YOW - LHR

3 stops24h 50mMultiple Airlines

Deal found 21/1£231

Tue 4/320:00YXU - LHR

1 stop35h 50mWestJet

Deal found 20/1£234

Mon 24/221:25YUL - LHR

3 stops30h 45mMultiple Airlines

Deal found 21/1£242

Mon 27/121:45YUL - LHR

1 stop14h 45mTAP AIR PORTUGAL

Deal found 21/1£247

Wed 5/306:45YUL - LHR

3 stops25h 05mWestJet

Deal found 21/1£248

Wed 26/222:35YYZ - LHR

1 stop33h 15mWestJet

Deal found 21/1£250

Tue 11/209:15YYZ - LHR

3 stops22h 35mMultiple Airlines

Deal found 21/1£250

Tue 1/423:00YYZ - LHR

1 stop14h 50mTAP AIR PORTUGAL

Deal found 21/1£251

Mon 10/322:25YUL - LHR

2 stops34h 15mAzores Airlines

Deal found 21/1£253

Find flights from Ontario to Heathrow within your budget

Fly from

Fly to

Route

Depart

Return

Price

TorontoLondon

YYZ - LHR

YYZLHR

Toronto Pearson Intl

Mon 31/3

20:50-11:55

1 stop10h 05m

London Heathrow

Wed 30/4

13:05-19:10

1 stop11h 05m

£385

TorontoLondon

YYZ - LHR

YYZLHR

Toronto Pearson Intl

Tue 18/3

14:00-07:10

1 stop13h 10m

London Heathrow

Mon 24/3

13:30-20:55

1 stop11h 25m

£388

TorontoLondon

YTZ - LHR

YTZLHR

Toronto Island

Wed 16/4

16:20-08:35

1 stop11h 15m

London Heathrow

Mon 21/4

06:50-16:50

2 stops15h 00m

£393

HamiltonLondon

YHM - LHR

YHMLHR

Hamilton

Wed 5/2

18:20-15:35

2 stops16h 15m

London Heathrow

Mon 10/2

07:50-17:10

2 stops14h 20m

£396

TorontoLondon

YYZ - LHR

YYZLHR

Toronto Pearson Intl

Mon 10/2

18:50-20:35

1 stop20h 45m

London Heathrow

Sun 23/2

19:25-14:35

1 stop24h 10m

£396

TorontoLondon

YYZ - LHR

YYZLHR

Toronto Pearson Intl

Mon 3/3

22:05-10:15

Nonstop7h 10m

London Heathrow

Mon 10/3

17:05-21:15

Nonstop8h 10m

£431

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Sun 16/3

22:45-22:40

1 stop19h 55m

London Heathrow

Mon 31/3

06:00-21:10

1 stop20h 10m

£447

TorontoLondon

YYZ - LHR

YYZLHR

Toronto Pearson Intl

Wed 23/4

23:00-17:45

1 stop13h 45m

London Heathrow

Mon 28/4

13:45-21:00

1 stop12h 15m

£448

TorontoLondon

YYZ - LHR

YYZLHR

Toronto Pearson Intl

Mon 3/2

22:55-16:35

1 stop12h 40m

London Heathrow

Fri 14/2

08:40-15:40

1 stop12h 00m

£451

TorontoLondon

YTZ - LHR

YTZLHR

Toronto Island

Tue 18/2

12:25-07:10

1 stop13h 45m

London Heathrow

Tue 25/2

06:50-19:50

2 stops18h 00m

£452

Flights are sorted by cheapest return flights first.

Deals found on 21/1

Showing 1-10 of 60 results

...

Best time to book a flight from Ontario to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Ontario 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.

Travel insights for flights from Ontario to Heathrow

Get recent, data-driven insights about flights from Ontario to Heathrow including ideal travel times, pricing trends, and more.

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

Currently, January is the cheapest month in which you can book a flight from Region of Ontario to London Heathrow Airport (average of £112). Flying from Region of Ontario to London Heathrow Airport in August is currently the most expensive (average of £161). 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 ON to LHR?

When flying from Region of Ontario to London Heathrow Airport, 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 Region of Ontario to London Heathrow Airport

The most flights from CAON to LHR are scheduled on a Monday (34 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (18 on average).

Rainfall in Heathrow by month

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

Temperature in Heathrow by month

If weather is an important factor for your trip to London Heathrow Airport, 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 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

Reviews of airlines servicing Heathrow

Read through reviews of airlines operating flights from Ontario to London, such as Icelandair, TAP AIR PORTUGAL and Virgin Atlantic. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very Good

8,521 reviews

Check prices

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta

8.0

Very Good

8,521 reviews

Delta

8.0

Very Good

8,521 reviews

Check prices

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM

7.8

Good

1,341 reviews

Delta

8.0

Very Good

8,521 reviews

Check prices

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Finnair

7.6

Good

1,286 reviews

Delta

8.0

Very Good

8,521 reviews

Check prices

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Austrian Airlines

7.6

Good

786 reviews

Delta

8.0

Very Good

8,521 reviews

Check prices

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

What are the cheapest airlines to fly from Region of Ontario to London Heathrow Airport one-way?
£168 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on TAP AIR PORTUGAL and Azores Airlines, with prices starting from £247 and £253, respectively.
What are the most popular routes from Region of Ontario to London Heathrow Airport?
When deciding which route to take from Region of Ontario to London Heathrow Airport consider Toronto Pearson Intl - London Heathrow, Montreal Pierre Elliott Trudeau Intl - London Heathrow or Toronto Island - London Heathrow as they are the most popular.
What are the most reliable airlines from Region of Ontario to London Heathrow Airport?
No one likes to see their flight delayed. When booking a flight from Region of Ontario to London Heathrow Airport consider choosing Singapore Airlines (75%), SriLankan Airlines (62%) or MEA (62%) as they are the most reliable in getting you off to your destination on time.
What are the cheapest flights from Region of Ontario to London Heathrow Airport?
Looking for the cheapest flight from Region of Ontario to London Heathrow Airport? While on average our users pay £889, our data indicates the cheapest price to be £333. The most popular route (Toronto Pearson Intl - London Heathrow), is priced around £359.
Can I find deals for flights from Ontario to Heathrow that include hotel bookings?
Yes. In addition to deals on Ontario to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Ontario to Heathrow?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Heathrow.
Can I find deals for business class flights from Ontario to Heathrow?
Yes. Cheapflights offers flight deals from Ontario to Heathrow 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 Region of Ontario to London Heathrow Airport?
Currently, January is the cheapest month in which you can book a flight from Region of Ontario to London Heathrow Airport (average of £112). Flying from Region of Ontario to London Heathrow Airport in August is currently the most expensive (average of £161). 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

Deal

Hounslow

Gatwick

Croydon

Milton Keynes

Slough

Luton

Ilford

Hayes

Eastbourne

Northampton

Swindon

Maidstone

Crawley

Winchester

Southend-on-Sea

Wembley

Ipswich

Watford

Southall

Browse thousands of different options on Cheapflights for your next trip

Top 10 airlines flying from Ontario to Heathrow

Airline	Cheapest	Average	Flexibility	On-time
TAP AIR PORTUGAL	Cheapest£268	Average£428	FlexibilityNo cancel fee	On-timeN/A	Search TAP AIR PORTUGAL flights
Aer Lingus	Cheapest£361	Average£462	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
Air Transat	Cheapest£394	Average£537	FlexibilityNo cancel fee	On-time50%	Search Air Transat flights
Icelandair	Cheapest£394	Average£538	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Virgin Atlantic	Cheapest£408	Average£494	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Air Canada	Cheapest£417	Average£833	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
KLM	Cheapest£442	Average£564	FlexibilityNo cancel fee	On-time75%	Search KLM flights
British Airways	Cheapest£454	Average£574	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Lufthansa	Cheapest£466	Average£631	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Air France	Cheapest£560	Average£562	FlexibilityNo cancel fee	On-time77%	Search Air France flights

Fly with Cheapflights

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

Cheapflights makes it easy to find Ontario to Heathrow flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Ontario to Heathrow for you. Better yet — we are completely free to use.

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from Ontario to Heathrow flexibly with Cheapflights today.

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

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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Cheap flights from Ontario to London Heathrow Airport from £168

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 29/3. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Ontario to Heathrow

Round-trip from

One-way from

Good round-trip deal

Good one-way deal

Find flight deals from Ontario to Heathrow

Cheapest flights from Ontario to HeathrowExplore the most affordable flight options available from Ontario to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 January 2025.

Explore the most affordable flight options available from Ontario to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 January 2025.

Find flights from Ontario to Heathrow within your budget

Best time to book a flight from Ontario to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Ontario with our price prediction graph.

Travel insights for flights from Ontario to Heathrow

Get recent, data-driven insights about flights from Ontario to Heathrow including ideal travel times, pricing trends, and more.

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

What is the cheapest time of day to fly from ON to LHR?

Find hourly flight availability from Ontario to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 22 January 2025.

Weekly flight availability from Region of Ontario to London Heathrow Airport

Explore weekly flight availability from Ontario to Heathrow. 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 22 January 2025.

Rainfall in Heathrow by month

Plan your trip to Heathrow by taking into account the average rainfall totals by month.

Temperature in Heathrow by month

Plan your trip to Heathrow by taking into account the average temperature totals by month.

Reviews of airlines servicing Heathrow

Read through reviews of airlines operating flights from Ontario to London, such as Icelandair, TAP AIR PORTUGAL and Virgin Atlantic. 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 Ontario to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

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

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

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

Can I find deals for flights from Ontario to Heathrow that include hotel bookings?

How can I find direct flights from Ontario to Heathrow?

Can I find deals for business class flights from Ontario to Heathrow?

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

Travelling to a place near Ontario?

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Alternative routes for Ontario to Heathrow

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Top 10 airlines flying from Ontario to Heathrow

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Cheapest flights from Ontario to Heathrow
Explore the most affordable flight options available from Ontario to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 January 2025.