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

To fly one-way, consider booking your trip with TAP AIR PORTUGAL, which is currently one of the cheapest options available, starting at £252. Aer Lingus flights start at £298 while deals on WestJet start at £384 one-way.

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 Heathrow Airport to Region of Ontario?

The most popular flight routes from London Heathrow Airport to Region of Ontario are London Heathrow - Toronto Pearson Intl, London Heathrow - Toronto Island and London Heathrow - Montreal Pierre Elliott Trudeau Intl.

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

Looking for the cheapest flight from London Heathrow Airport to Region of Ontario? While on average our users pay £1,420, our data indicates the cheapest price to be £347. The most popular route (London Heathrow - Toronto Pearson Intl), is priced around £320.

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

The top 3 most reliable airlines when flying from London Heathrow Airport to Region of Ontario are Thai Airways (85%), Ethiopian Air (83%) and Air Canada (81%).

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

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

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

Travelers have found it’s best to book a flight 60 days in advance to save up to 20% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 60 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from London Heathrow Airport to Region of Ontario 1-2 weeks in advance for as low as £423, or £490 for flights within the next 24 hours.

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

Flights from London Heathrow Airport to Region of Ontario lean towards being more expensive in December. Prices are generally better when you fly from London Heathrow Airport to Region of Ontario in February, with the cheapest ticket starting at £275.

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

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

How can I find direct flights from Heathrow to Ontario?

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

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

Yes. Cheapflights offers flight deals from Heathrow 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.

£249+ Flights from London Heathrow Airport to Ontario

Cheap flight deals from Heathrow to Ontario

Round-trip from	£348
One-way from	£249
Popular in	December
Cheapest in	February
Average price	£518
Good round-trip deal	£427 or less
Good one-way deal	£548 or less

Air Canada
29/9-8/10
2 total stops
34h 50m total
London to Ontario

Search Deals

11/11
2 total stops
27h 00m total
London to Ontario

Search Deals

Highest demand for flights based on searches. 3% potential increase in price (£10 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 July 2025

Search Deals

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

Search Deals

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

Search Deals

Find flight deals from Heathrow to Ontario

Cheapest flights from Heathrow to Ontario
Explore the most affordable flight options available from Heathrow to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 July 2025.

Mon 29/906:50LHR - YYZ

1 stop9h 50mAir Canada

Wed 8/1000:30YYZ - LHR

1 stop25h 00mAir Canada

Deal found 16/7£348

Fri 12/906:00LHR - YYZ

1 stop11h 50mMultiple Airlines

Sun 21/920:30YYZ - LHR

Nonstop7h 05mMultiple Airlines

Deal found 16/7£349

Sun 31/806:50LHR - YTZ

2 stops12h 56mAir Canada

Sun 7/915:25YTZ - LHR

1 stop13h 10mAir Canada

Deal found 16/7£349

Tue 23/906:00LHR - YYZ

1 stop11h 50mSWISS

Mon 29/920:15YYZ - LHR

1 stop18h 05mSWISS

Deal found 18/7£351

Fri 17/1007:25LHR - YYZ

1 stop12h 30mLufthansa

Thu 23/1023:35YYZ - LHR

Nonstop7h 15mLufthansa

Deal found 18/7£351

Sat 23/818:00LHR - YUL

1 stop24h 09mAir Canada

Mon 25/813:00YUL - LHR

1 stop12h 30mAir Canada

Deal found 17/7£353

Fri 5/908:40LHR - YUL

1 stop11h 20mSWISS

Sat 4/1016:40YUL - LHR

1 stop18h 45mSWISS

Deal found 18/7£354

Wed 5/1106:35LHR - YUL

1 stop16h 45mMultiple Airlines

Wed 12/1116:50YUL - LHR

1 stop10h 15mMultiple Airlines

Deal found 17/7£354

Wed 15/1007:30LHR - YUL

1 stop13h 30mLufthansa

Wed 5/1120:10YUL - LHR

1 stop15h 55mLufthansa

Deal found 16/7£356

Wed 27/817:30LHR - YTZ

2 stops28h 16mMultiple Airlines

Sat 6/918:25YTZ - LHR

1 stop31h 05mMultiple Airlines

Deal found 17/7£356

Mon 10/1111:40LHR - YYZ

Nonstop8h 10mBritish Airways

Sat 22/1122:05YYZ - LHR

Nonstop7h 05mBritish Airways

Deal found 16/7£359

Fri 31/1006:00LHR - YYZ

1 stop12h 50mAustrian Airlines

Mon 10/1118:30YYZ - LHR

1 stop19h 10mAustrian Airlines

Deal found 17/7£360

Best flights from Heathrow to Ontario
Discover carefully curated flight deals from Heathrow to Ontario that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 18 July 2025.

Mon 29/906:50LHR - YYZ

1 stop9h 50mAir Canada

Wed 8/1000:30YYZ - LHR

1 stop25h 00mAir Canada

Deal found 16/7£348

Fri 12/906:00LHR - YYZ

1 stop11h 50mMultiple Airlines

Sun 21/920:30YYZ - LHR

Nonstop7h 05mMultiple Airlines

Deal found 16/7£349

Tue 23/906:00LHR - YYZ

1 stop11h 50mSWISS

Tue 30/916:35YYZ - LHR

1 stop10h 20mSWISS

Deal found 18/7£351

Fri 17/1007:25LHR - YYZ

1 stop12h 30mLufthansa

Thu 23/1023:35YYZ - LHR

Nonstop7h 15mLufthansa

Deal found 18/7£351

Mon 10/1111:40LHR - YYZ

Nonstop8h 10mBritish Airways

Sat 22/1122:05YYZ - LHR

Nonstop7h 05mBritish Airways

Deal found 16/7£359

Fri 31/1006:00LHR - YYZ

1 stop12h 50mAustrian Airlines

Mon 10/1118:30YYZ - LHR

1 stop19h 10mAustrian Airlines

Deal found 17/7£360

Fri 5/913:05LHR - YYZ

1 stop11h 05mIcelandair

Fri 12/920:50YYZ - LHR

1 stop10h 05mIcelandair

Deal found 18/7£363

Mon 8/908:00LHR - YUL

1 stop18h 10mTAP AIR PORTUGAL

Mon 22/922:45YUL - LHR

1 stop14h 00mTAP AIR PORTUGAL

Deal found 17/7£364

Thu 4/919:45LHR - YOW

1 stop24h 20mAir France

Tue 9/917:15YOW - LHR

1 stop12h 15mAir France

Deal found 16/7£454

Tue 4/1106:30LHR - YOW

2 stops13h 40mKLM

Thu 20/1117:20YOW - LHR

2 stops12h 25mKLM

Deal found 17/7£507

Sat 30/807:45LHR - YOW

2 stops13h 58mUnited Airlines

Sat 6/906:05YOW - LHR

1 stop19h 40mUnited Airlines

Deal found 16/7£516

Tue 14/1006:50LHR - YOW

2 stops12h 01mBrussels Airlines

Thu 23/1018:40YOW - LHR

1 stop30h 50mBrussels Airlines

Deal found 17/7£534

Direct flights from Heathrow to Ontario
Explore direct flight options from Heathrow to Ontario based on user searches, and compare prices and availability for your desired travel dates. Data last updated 18 July 2025.

Sun 14/913:20LHR - YYZ

Nonstop7h 40mBritish Airways

Sat 27/918:25YYZ - LHR

Nonstop7h 10mBritish Airways

Deal found 16/7£348

Fri 17/1012:05LHR - YYZ

Nonstop8h 10mAir Canada

Sat 25/1023:55YYZ - LHR

Nonstop7h 25mAir Canada

Deal found 16/7£352

Sat 15/1114:00LHR - YYZ

Nonstop7h 55mVirgin Atlantic

Thu 20/1122:40YYZ - LHR

Nonstop7h 00mVirgin Atlantic

Deal found 16/7£355

Tue 11/1111:10LHR - YYZ

Nonstop8h 05mLufthansa

Fri 14/1123:00YYZ - LHR

Nonstop7h 20mLufthansa

Deal found 17/7£357

Fri 29/817:40LHR - YYZ

Nonstop7h 50mMultiple Airlines

Sun 7/921:30YYZ - LHR

Nonstop7h 30mMultiple Airlines

Deal found 18/7£369

Wed 14/117:05LHR - YYZ

Nonstop8h 10mAmerican Airlines

Thu 15/117:40YYZ - LHR

Nonstop7h 10mAmerican Airlines

Deal found 16/7£377

Thu 9/1009:30LHR - YUL

Nonstop7h 10mAir Canada

Sun 12/1018:55YUL - LHR

Nonstop6h 35mAir Canada

Deal found 17/7£380

Wed 5/1116:10LHR - YUL

Nonstop7h 35mBritish Airways

Thu 13/1120:40YUL - LHR

Nonstop6h 50mBritish Airways

Deal found 16/7£392

Wed 17/914:05LHR - YUL

Nonstop7h 10mMultiple Airlines

Sat 4/1018:55YUL - LHR

Nonstop6h 35mMultiple Airlines

Deal found 16/7£404

Thu 18/909:30LHR - YUL

Nonstop7h 10mLufthansa

Sun 5/1018:55YUL - LHR

Nonstop6h 35mLufthansa

Deal found 16/7£405

Sat 20/912:40LHR - YOW

Nonstop7h 20mAir Canada

Sat 27/921:00YOW - LHR

Nonstop6h 35mAir Canada

Deal found 18/7£486

Sat 30/812:40LHR - YOW

Nonstop7h 20mLufthansa

Sat 6/921:00YOW - LHR

Nonstop6h 35mLufthansa

Deal found 16/7£616

Last-minute flights from Heathrow to Ontario
Discover last-minute flight deals from Heathrow to Ontario. Data last updated 18 July 2025 and is based on user searches.

Wed 23/712:05LHR - YYZ

Nonstop7h 50mAir Canada

Sun 3/823:45YYZ - LHR

Nonstop7h 05mAir Canada

Deal found 16/7£499

Wed 23/710:30LHR - YUL

1 stop10h 30mLufthansa

Wed 20/822:25YUL - LHR

Nonstop6h 35mLufthansa

Deal found 16/7£517

Wed 23/712:05LHR - YYZ

Nonstop7h 50mLufthansa

Sun 27/716:00YYZ - LHR

1 stop9h 30mLufthansa

Deal found 16/7£523

Wed 23/706:55LHR - YYZ

1 stop16h 35mMultiple Airlines

Wed 30/706:35YYZ - LHR

1 stop9h 25mMultiple Airlines

Deal found 16/7£529

Wed 23/706:30LHR - YUL

2 stops19h 38mMultiple Airlines

Wed 30/722:25YUL - LHR

Nonstop6h 35mMultiple Airlines

Deal found 16/7£536

Wed 23/709:55LHR - YYZ

2 stops18h 18mDelta

Wed 13/522:40YYZ - LHR

Nonstop7h 10mDelta

Deal found 16/7£539

Wed 23/706:50LHR - YYZ

2 stops17h 10mUnited Airlines

Fri 22/812:05YYZ - LHR

2 stops13h 50mUnited Airlines

Deal found 16/7£540

Wed 23/712:05LHR - YUL

1 stop12h 16mAir Canada

Wed 30/722:25YUL - LHR

Nonstop6h 35mAir Canada

Deal found 16/7£546

Wed 23/706:30LHR - YUL

1 stop15h 25mDelta

Wed 30/722:30YUL - LHR

1 stop10h 15mDelta

Deal found 16/7£551

Wed 23/706:30LHR - YYZ

2 stops21h 35mBritish Airways

Wed 10/915:11YYZ - LHR

1 stop11h 09mBritish Airways

Deal found 16/7£560

Thu 24/706:00LHR - YYZ

2 stops16h 59mSWISS

Tue 9/916:35YYZ - LHR

1 stop10h 20mSWISS

Deal found 16/7£536

Thu 24/713:00LHR - YTZ

2 stops27h 31mAir Canada

Sat 2/807:25YTZ - LHR

1 stop18h 05mAir Canada

Deal found 16/7£541

One-way flights from Heathrow to Ontario
Search for one-way flight options from Heathrow to Ontario. Find affordable one-way fares based on user searches. Data last updated 18 July 2025.

Tue 11/1109:55LHR - YYZ

2 stops27h 00mMultiple Airlines

Deal found 15/7£249

Sun 28/1206:00LHR - YYZ

1 stop13h 40mTAP AIR PORTUGAL

Deal found 16/7£252

Fri 24/1009:55LHR - YUL

3 stops32h 50mMultiple Airlines

Deal found 16/7£256

Thu 18/909:55LHR - YTZ

2 stops29h 39mMultiple Airlines

Deal found 16/7£274

Thu 25/909:50LHR - YYZ

1 stop11h 00mAer Lingus

Deal found 16/7£298

Fri 12/1206:00LHR - YUL

1 stop19h 15mTAP AIR PORTUGAL

Deal found 17/7£298

Fri 29/815:05LHR - YOW

2 stops29h 51mMultiple Airlines

Deal found 16/7£319

Sat 29/1114:50LHR - YHM

1 stop31h 27mWestJet

Deal found 17/7£384

Sun 26/1008:50LHR - YHM

2 stops18h 18mMultiple Airlines

Deal found 18/7£395

Tue 18/1114:50LHR - YOW

2 stops38h 52mWestJet

Deal found 17/7£410

Mon 20/1022:15LHR - YXU

3 stops35h 57mMultiple Airlines

Deal found 16/7£420

Wed 24/909:50LHR - YOW

2 stops16h 19mAer Lingus

Deal found 18/7£439

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

Mon 29/9

06:50-11:40

1 stop9h 50m

Toronto Pearson Intl

Wed 8/10

00:30-06:30

1 stop25h 00m

£348

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

Fri 12/9

06:00-12:50

1 stop11h 50m

Toronto Pearson Intl

Sun 21/9

20:30-08:35

Nonstop7h 05m

£349

LondonToronto

LHR - YTZ

LHRYTZ

London Heathrow

Sun 31/8

06:50-14:46

2 stops12h 56m

Toronto Island

Sun 7/9

15:25-09:35

1 stop13h 10m

£349

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

Tue 23/9

06:00-12:50

1 stop11h 50m

Toronto Pearson Intl

Mon 29/9

20:15-19:20

1 stop18h 05m

£351

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

Fri 17/10

07:25-14:55

1 stop12h 30m

Toronto Pearson Intl

Thu 23/10

23:35-11:50

Nonstop7h 15m

£351

LondonToronto

LHR - YTZ

LHRYTZ

London Heathrow

Mon 12/1

11:10-21:35

2 stops15h 25m

Toronto Island

Sat 17/1

08:50-07:10

2 stops17h 20m

£353

LondonMontreal

LHR - YUL

LHRYUL

London Heathrow

Sat 23/8

18:00-13:09

1 stop24h 09m

Montreal Pierre Elliott Trudeau Intl

Mon 25/8

13:00-06:30

1 stop12h 30m

£353

LondonMontreal

LHR - YUL

LHRYUL

London Heathrow

Fri 5/9

08:40-15:00

1 stop11h 20m

Montreal Pierre Elliott Trudeau Intl

Sat 4/10

16:40-16:25

1 stop18h 45m

£354

LondonMontreal

LHR - YUL

LHRYUL

London Heathrow

Wed 5/11

06:35-18:20

1 stop16h 45m

Montreal Pierre Elliott Trudeau Intl

Wed 12/11

16:50-08:05

1 stop10h 15m

£354

LondonToronto

LHR - YYZ

LHRYYZ

London Heathrow

Mon 6/10

17:50-20:40

Nonstop7h 50m

Toronto Pearson Intl

Tue 14/10

22:30-10:40

Nonstop7h 10m

£356

Flights are sorted by cheapest return flights first.

Deals found on 15/7

Showing 1-10 of 53 results

...

Best time to book a flight from Heathrow to Ontario

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

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

Currently, January is the cheapest month in which you can book a flight from London Heathrow Airport to Region of Ontario (average of £490). Flying from London Heathrow Airport 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 LHR to ON?

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

The most flights from LHR to CAON are scheduled on a Thursday (39 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (30 on average).

Reviews of airlines servicing Ontario

Read reviews from past customers who have flown with KLM, Austrian Airlines, andAir France from London Heathrow Airport to Ontario. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

KLM

7.8

Good

1,374 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

KLM

7.8

Good

1,374 reviews

KLM

7.8

Good

1,374 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Austrian Airlines

7.6

Good

817 reviews

KLM

7.8

Good

1,374 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Air France

7.5

Good

1,465 reviews

KLM

7.8

Good

1,374 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

SWISS

7.5

Good

1,661 reviews

KLM

7.8

Good

1,374 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

United Airlines

7.4

Good

8,865 reviews

KLM

7.8

Good

1,374 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Related info for your journey

What are the cheapest airlines to fly from London Heathrow Airport to Region of Ontario one-way?
To fly one-way, consider booking your trip with TAP AIR PORTUGAL, which is currently one of the cheapest options available, starting at £252. Aer Lingus flights start at £298 while deals on WestJet start at £384 one-way.
What are the most popular routes from London Heathrow Airport to Region of Ontario?
The most popular flight routes from London Heathrow Airport to Region of Ontario are London Heathrow - Toronto Pearson Intl, London Heathrow - Toronto Island and London Heathrow - Montreal Pierre Elliott Trudeau Intl.
What are the most reliable airlines from London Heathrow Airport to Region of Ontario?
The top 3 most reliable airlines when flying from London Heathrow Airport to Region of Ontario are Thai Airways (85%), Ethiopian Air (83%) and Air Canada (81%).
What are the cheapest flights from London Heathrow Airport to Region of Ontario?
Looking for the cheapest flight from London Heathrow Airport to Region of Ontario? While on average our users pay £1,420, our data indicates the cheapest price to be £347. The most popular route (London Heathrow - Toronto Pearson Intl), is priced around £320.
Can I find deals for flights from Heathrow to Ontario that include hotel bookings?
Yes. In addition to deals on Heathrow to Ontario flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Heathrow to Ontario?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Ontario.
Can I find deals for business class flights from Heathrow to Ontario?
Yes. Cheapflights offers flight deals from Heathrow 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 Heathrow Airport to Region of Ontario?
Currently, January is the cheapest month in which you can book a flight from London Heathrow Airport to Region of Ontario (average of £490). Flying from London Heathrow Airport 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

Alternative routes for Heathrow to Ontario

Heathrow to Pearson Intl flights

Gatwick to Pearson Intl flights

Heathrow to Vancouver Intl flights

London City to Pearson Intl flights

Heathrow to Toronto Island flights

Heathrow to Calgary flights

Gatwick to Toronto Island flights

Gatwick to Vancouver Intl flights

Luton to Pearson Intl flights

Heathrow to Pierre Elliott Trudeau Intl flights

Stansted to Pearson Intl flights

London City to Vancouver Intl flights

Heathrow to Abbotsford flights

Gatwick to Pierre Elliott Trudeau Intl flights

Gatwick to Calgary flights

London City to Pierre Elliott Trudeau Intl flights

London City to Calgary flights

Heathrow to Halifax flights

Heathrow to Ottawa flights

Luton to Pierre Elliott Trudeau Intl flights

Gatwick to Abbotsford flights

Stansted to Vancouver Intl flights

Southend to Pearson Intl flights

Luton to Calgary flights

Heathrow to Edmonton flights

Stansted to Pierre Elliott Trudeau Intl flights

Luton to Vancouver Intl flights

Stansted to Calgary flights

Heathrow to Winnipeg flights

Gatwick to Edmonton flights

Gatwick to Halifax flights

Gatwick to Ottawa flights

London City to Halifax flights

London City to Ottawa flights

Heathrow to Québec City flights

Luton to Halifax flights

Heathrow to Penticton flights

Heathrow to Victoria flights

Stansted to Halifax flights

Gatwick to Québec City flights

London City to Québec City flights

Heathrow to St. John's flights

Gatwick to Victoria flights

Gatwick to Winnipeg flights

Gatwick to St. John's flights

Heathrow to Charlottetown flights

Stansted to Edmonton flights

Complete your trip

Region of Ontario car hire

Toronto Pearson Intl Airport car hire

Ottawa Airport car hire

Toronto Island Airport car hire

Hamilton Airport car hire

London Airport car hire

Toronto Region of Waterloo Intl Airport car hire

Thunder Bay Airport car hire

Sault Ste Marie Airport car hire

Kingston Airport car hire

Timmins Airport car hire

North Bay Airport car hire

Top 10 airlines flying from Heathrow to Ontario

Airline	Cheapest	Average	Flexibility	On-time
Aer Lingus	Cheapest£292	Average£509	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
PLAY	Cheapest£292	Average£357	FlexibilityNo cancel fee	On-timeN/A	Search PLAY flights
Lufthansa	Cheapest£299	Average£512	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Scandinavian Airlines	Cheapest£299	Average£526	FlexibilityNo cancel fee	On-time77%	Search Scandinavian Airlines flights
Delta	Cheapest£307	Average£500	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights
TAP AIR PORTUGAL	Cheapest£313	Average£538	FlexibilityNo cancel fee	On-timeN/A	Search TAP AIR PORTUGAL flights
Air Canada	Cheapest£314	Average£543	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Icelandair	Cheapest£318	Average£372	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Air Transat	Cheapest£318	Average£462	FlexibilityNo cancel fee	On-time50%	Search Air Transat flights
Virgin Atlantic	Cheapest£328	Average£447	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights

Fly with Cheapflights

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

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Ontario from Heathrow today with Cheapflights!

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

Millions of users choose and trust Cheapflights to book the best flight deals from Heathrow 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 Heathrow to Ontario with no change fees?

Need flexible booking options for your flight to Ontario from Heathrow? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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

Of course! You can now track prices for flights from Heathrow 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 Heathrow Airport to Ontario from £249

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 11/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Heathrow to Ontario

Keep the following information in mind while searching for Heathrow to Ontario flight deals. Data was last updated 18 July 2025.

Round-trip from

One-way from

Popular in

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Average price

Good round-trip deal

Good one-way deal

Find flight deals from Heathrow to Ontario

Cheapest flights from Heathrow to OntarioExplore the most affordable flight options available from Heathrow to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 July 2025.

Explore the most affordable flight options available from Heathrow to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 July 2025.

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

Best time to book a flight from Heathrow to Ontario

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

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to Ontario

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

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

Find hourly flight availability from Heathrow 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 18 July 2025.

Weekly flight availability from London Heathrow Airport to Region of Ontario

Explore weekly flight availability from Heathrow 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 18 July 2025.

Reviews of airlines servicing Ontario

Read reviews from past customers who have flown with KLM, Austrian Airlines, andAir France from London Heathrow Airport 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 Heathrow to Ontario. 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 London Heathrow Airport to Region of Ontario one-way?

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

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

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

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

How can I find direct flights from Heathrow to Ontario?

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

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

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Alternative routes for Heathrow to Ontario

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Top 10 airlines flying from Heathrow to Ontario

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Cheapest flights from Heathrow to Ontario
Explore the most affordable flight options available from Heathrow to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 July 2025.