What are the cheapest airlines to fly from United Kingdom to Ontario one-way?

The cheapet airlines for a one-way flight from United Kingdom to Ontario are Lufthansa (£485), Iberia (£491), and Finnair (£498).

What are the most popular routes from United Kingdom to Ontario?

While some choose either Manchester - Ontario or London Gatwick - Ontario, London Heathrow - Ontario is the most popular route from United Kingdom to Ontario.

What are the most popular airlines that fly from United Kingdom to Ontario?

Before booking your flight from United Kingdom to Ontario check out the most popular airlines for this route: Finnair, British Airways or Lufthansa.

How far in advance should I book a flight from United Kingdom to Ontario?

Travelers have found it’s best to book a flight 58 days in advance to save up to 21% 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 58 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 United Kingdom to Ontario 1-2 weeks in advance for as low as £504, or £709 for flights within the next 24 hours.

What is the cheapest month to fly from United Kingdom to Ontario?

Flights from United Kingdom to Ontario lean towards being more expensive in August. Prices are generally better when you fly from United Kingdom to Ontario in February, with the cheapest ticket starting at £390.

What airport do you fly into for flights to Ontario from United Kingdom?

Located just 3.1 mi from the city center, Ontario (ONT) is the airport most travelers will use when flying to Ontario from United Kingdom.

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

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

How can I find direct flights from United Kingdom to Ontario?

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

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

Yes. Cheapflights offers flight deals from United Kingdom 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.

£604+ Flights from the United Kingdom to Ontario

Cheap flight deals from United Kingdom to Ontario

Round-trip from	£400
One-way from	£224

United Airlines
10/3-17/3
3 total stops
56h 34m total
United Kingdom to Ontario

Search Deals

30/4
3 total stops
33h 37m total
United Kingdom to Ontario

Search Deals

Find flight deals from United Kingdom to Ontario

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

Mon 10/308:45LHR - ONT

2 stops34h 59mUnited Airlines

Mon 17/305:05ONT - LHR

1 stop21h 35mUnited Airlines

Deal found 20/1£400

Tue 11/210:45LHR - ONT

1 stop13h 43mKLM

Tue 18/213:05ONT - LHR

1 stop13h 30mKLM

Deal found 20/1£419

Wed 12/213:50LHR - ONT

1 stop16h 55mFinnair

Mon 24/214:54ONT - LHR

1 stop13h 11mFinnair

Deal found 21/1£420

Wed 26/215:50LHR - ONT

1 stop14h 42mVirgin Atlantic

Sun 2/313:10ONT - LHR

1 stop33h 10mVirgin Atlantic

Deal found 21/1£424

Thu 27/306:30LHR - ONT

2 stops21h 27mLufthansa

Thu 3/413:20ONT - LHR

1 stop13h 05mLufthansa

Deal found 21/1£432

Mon 10/309:30LHR - ONT

2 stops18h 27mMultiple Airlines

Sun 16/306:00ONT - LHR

1 stop18h 25mMultiple Airlines

Deal found 21/1£452

Mon 24/310:40LHR - ONT

1 stop18h 47mBritish Airways

Mon 31/314:54ONT - LHR

1 stop13h 36mBritish Airways

Deal found 21/1£453

Thu 20/210:00LHR - ONT

2 stops21h 53mIberia

Thu 27/214:54ONT - LHR

1 stop13h 11mIberia

Deal found 21/1£456

Sun 26/112:00LGW - ONT

1 stop27h 11mMultiple Airlines

Sun 2/208:01ONT - LGW

1 stop18h 34mMultiple Airlines

Deal found 21/1£468

Mon 10/306:05GLA - ONT

2 stops17h 37mDelta

Mon 17/313:30ONT - GLA

2 stops16h 10mDelta

Deal found 21/1£483

Wed 12/310:50LHR - ONT

1 stop18h 53mDelta

Mon 17/313:30ONT - LHR

1 stop13h 30mDelta

Deal found 21/1£492

Thu 20/218:00LHR - ONT

2 stops34h 52mAir Canada

Thu 27/206:00ONT - LHR

2 stops20h 10mAir Canada

Deal found 22/1£493

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

Mon 10/308:45LHR - ONT

2 stops34h 59mUnited Airlines

Mon 17/305:05ONT - LHR

1 stop21h 35mUnited Airlines

Deal found 20/1£400

Tue 11/210:45LHR - ONT

1 stop13h 43mKLM

Tue 18/213:05ONT - LHR

1 stop13h 30mKLM

Deal found 20/1£419

Wed 12/213:50LHR - ONT

1 stop16h 55mFinnair

Mon 24/214:54ONT - LHR

1 stop13h 11mFinnair

Deal found 21/1£420

Wed 26/215:50LHR - ONT

1 stop14h 42mVirgin Atlantic

Sun 2/313:10ONT - LHR

1 stop33h 10mVirgin Atlantic

Deal found 21/1£424

Thu 27/306:30LHR - ONT

2 stops21h 27mLufthansa

Thu 3/413:20ONT - LHR

1 stop13h 05mLufthansa

Deal found 21/1£432

Mon 10/309:30LHR - ONT

2 stops18h 27mMultiple Airlines

Sun 16/306:00ONT - LHR

1 stop18h 25mMultiple Airlines

Deal found 21/1£452

Mon 24/310:40LHR - ONT

1 stop18h 47mBritish Airways

Mon 31/314:54ONT - LHR

1 stop13h 36mBritish Airways

Deal found 21/1£453

Thu 20/210:00LHR - ONT

2 stops21h 53mIberia

Thu 27/214:54ONT - LHR

1 stop13h 11mIberia

Deal found 21/1£456

Mon 10/306:05GLA - ONT

2 stops17h 37mDelta

Mon 17/313:30ONT - GLA

2 stops16h 10mDelta

Deal found 21/1£483

Thu 20/218:00LHR - ONT

2 stops34h 52mAir Canada

Thu 27/206:00ONT - LHR

2 stops20h 10mAir Canada

Deal found 22/1£493

Thu 6/207:50EDI - ONT

2 stops18h 47mAmerican Airlines

Mon 10/215:04ONT - EDI

2 stops17h 56mAmerican Airlines

Deal found 21/1£529

Wed 12/310:50LHR - ONT

1 stop18h 53mDelta

Mon 17/313:30ONT - LHR

1 stop13h 30mDelta

Deal found 21/1£492

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

Sun 26/113:40MAN - ONT

2 stops40h 52mDelta

Fri 9/522:59ONT - MAN

2 stops24h 46mDelta

Deal found 21/1£896

Sun 26/112:00LGW - ONT

1 stop27h 11mMultiple Airlines

Sun 2/208:01ONT - LGW

1 stop18h 34mMultiple Airlines

Deal found 21/1£468

Mon 27/106:25MAN - ONT

2 stops22h 04mUnited Airlines

Mon 3/210:47ONT - MAN

2 stops22h 18mUnited Airlines

Deal found 20/1£905

Tue 28/110:45LHR - ONT

1 stop13h 43mKLM

Tue 4/213:00ONT - LHR

1 stop13h 35mKLM

Deal found 21/1£421

Fri 31/110:05LHR - ONT

1 stop15h 52mUnited Airlines

Tue 18/206:00ONT - LHR

1 stop17h 25mUnited Airlines

Deal found 22/1£458

Fri 31/114:30LHR - ONT

1 stop16h 22mDelta

Fri 7/213:21ONT - LHR

1 stop12h 39mDelta

Deal found 21/1£511

Fri 31/114:30LHR - ONT

2 stops30h 13mMultiple Airlines

Tue 18/205:05ONT - LHR

2 stops17h 25mMultiple Airlines

Deal found 22/1£574

Fri 31/112:10LHR - ONT

1 stop18h 35mIberia

Tue 18/210:51ONT - LHR

2 stops18h 34mIberia

Deal found 22/1£622

Fri 31/106:10LBA - ONT

2 stops24h 22mKLM

Wed 19/206:00ONT - LBA

2 stops31h 55mKLM

Deal found 21/1£859

Fri 31/111:00LGW - ONT

2 stops19h 45mIberia

Tue 18/206:59ONT - LGW

2 stops27h 51mIberia

Deal found 22/1£1,316

Sat 1/212:45LHR - ONT

1 stop17h 12mLufthansa

Sat 15/206:00ONT - LHR

1 stop17h 30mLufthansa

Deal found 21/1£481

Sat 1/210:40LHR - ONT

1 stop15h 57mBritish Airways

Sat 15/216:25ONT - LHR

1 stop12h 55mBritish Airways

Deal found 21/1£503

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

Wed 30/408:25GLA - ONT

3 stops33h 37mMultiple Airlines

Deal found 20/1£224

Thu 1/519:10MAN - ONT

3 stops55h 30mMultiple Airlines

Deal found 21/1£278

Wed 26/307:55LGW - ONT

2 stops32h 49mMultiple Airlines

Deal found 21/1£325

Wed 26/320:40LHR - ONT

2 stops49h 49mMultiple Airlines

Deal found 21/1£462

Tue 28/110:05LHR - ONT

1 stop15h 59mLufthansa

Deal found 21/1£485

Mon 10/213:50LHR - ONT

1 stop16h 55mIberia

Deal found 21/1£491

Wed 12/208:20LHR - ONT

1 stop18h 17mFinnair

Deal found 21/1£498

Fri 31/110:00LCY - ONT

2 stops19h 57mLufthansa

Deal found 21/1£509

Wed 26/310:40LHR - ONT

1 stop18h 47mBritish Airways

Deal found 21/1£509

Tue 4/310:00EDI - ONT

2 stops20h 16mIberia

Deal found 21/1£556

Wed 30/408:40GLA - ONT

2 stops23h 11mIberia

Deal found 20/1£582

Wed 30/407:00GLA - ONT

2 stops19h 29mBritish Airways

Deal found 20/1£584

Find flights from United Kingdom to Ontario within your budget

Fly from

Fly to

Route

Depart

Return

Price

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Mon 10/3

08:45-12:44

2 stops34h 59m

Ontario

Mon 17/3

05:05-09:40

1 stop21h 35m

£400

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Tue 11/2

10:45-16:28

1 stop13h 43m

Ontario

Tue 18/2

13:05-10:35

1 stop13h 30m

£419

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 12/2

13:50-22:45

1 stop16h 55m

Ontario

Mon 24/2

14:54-12:05

1 stop13h 11m

£420

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 26/2

15:50-22:32

1 stop14h 42m

Ontario

Sun 2/3

13:10-06:20

1 stop33h 10m

£424

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Thu 27/3

06:30-20:57

2 stops21h 27m

Ontario

Thu 3/4

13:20-10:25

1 stop13h 05m

£432

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Mon 10/3

09:30-20:57

2 stops18h 27m

Ontario

Sun 16/3

06:00-07:25

1 stop18h 25m

£452

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Mon 24/3

10:40-22:27

1 stop18h 47m

Ontario

Mon 31/3

14:54-12:30

1 stop13h 36m

£453

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Thu 20/2

10:00-23:53

2 stops21h 53m

Ontario

Thu 27/2

14:54-12:05

1 stop13h 11m

£456

GlasgowOntario

GLA - ONT

GLAONT

Glasgow Intl

Mon 10/3

06:05-16:42

2 stops17h 37m

Ontario

Mon 17/3

13:30-12:40

2 stops16h 10m

£483

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 12/3

10:50-22:43

1 stop18h 53m

Ontario

Mon 17/3

13:30-10:00

1 stop13h 30m

£492

Flights are sorted by cheapest return flights first.

Deals found on 20/1

Showing 1-10 of 60 results

...

Best time to book a flight from United Kingdom to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from United Kingdom 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 United Kingdom to Ontario

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

What is the cheapest month to book a flight from United Kingdom to Ontario?

Currently, March is the cheapest month in which you can book a flight from United Kingdom to Ontario (average of £516). Flying from United Kingdom to Ontario in August is currently the most expensive (average of £827). 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 GB to ONT?

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

Rainfall in Ontario by month

In terms of precipitation, rainfall in Ontario ranges from 3.0 - 86.0 inches per month. February is typically the wettest month, when rainfall can reach 86.0 mm. June is typically the driest time to visit Ontario when rainfall is around 3.0 mm.

Temperature in Ontario by month

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 26.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 12.0 C).

Reviews of airlines servicing Ontario

To help decide which airline to fly from United Kingdom to Ontario, see what other customers have to say about Finnair, Virgin Atlantic and British Airways. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very Good

8,521 reviews

Check prices

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta

8.0

Very Good

8,521 reviews

Delta

8.0

Very Good

8,521 reviews

Check prices

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM

7.8

Good

1,341 reviews

Delta

8.0

Very Good

8,521 reviews

Check prices

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Finnair

7.6

Good

1,286 reviews

Delta

8.0

Very Good

8,521 reviews

Check prices

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Virgin Atlantic

7.5

Good

665 reviews

Delta

8.0

Very Good

8,521 reviews

Check prices

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

United Airlines

7.4

Good

8,985 reviews

Delta

8.0

Very Good

8,521 reviews

Check prices

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

What airport do you fly into for flights to Ontario from United Kingdom?
Located just 3.1 mi from the city center, Ontario (ONT) is the airport most travelers will use when flying to Ontario from United Kingdom.
What are the cheapest airlines to fly from United Kingdom to Ontario one-way?
The cheapet airlines for a one-way flight from United Kingdom to Ontario are Lufthansa (£485), Iberia (£491), and Finnair (£498).
What are the most popular routes from United Kingdom to Ontario?
While some choose either Manchester - Ontario or London Gatwick - Ontario, London Heathrow - Ontario is the most popular route from United Kingdom to Ontario.
Can I find deals for flights from United Kingdom to Ontario that include hotel bookings?
Yes. In addition to deals on United Kingdom to Ontario flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from United Kingdom to Ontario?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from United Kingdom to Ontario.
Can I find deals for business class flights from United Kingdom to Ontario?
Yes. Cheapflights offers flight deals from United Kingdom 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 United Kingdom to Ontario?
Currently, March is the cheapest month in which you can book a flight from United Kingdom to Ontario (average of £516). Flying from United Kingdom to Ontario in August is currently the most expensive (average of £827). 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 United Kingdom to Ontario

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Top 6 airlines flying from United Kingdom to Ontario

Airline	Cheapest	Average	Flexibility	On-time
Virgin Atlantic	Cheapest£405	Average£556	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
British Airways	Cheapest£444	Average£646	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Finnair	Cheapest£446	Average£533	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
Lufthansa	Cheapest£480	Average£569	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
United Airlines	Cheapest£547	Average£790	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
KLM	Cheapest£564	Average£660	FlexibilityNo cancel fee	On-time75%	Search KLM flights

Fly with Cheapflights

How does Cheapflights help users find flights from United Kingdom to Ontario?

Deals for United Kingdom to Ontario flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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

Cheapflights simply makes it quick and affordable to book flights from United Kingdom to Ontario by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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

Need flexible booking options for your flight to Ontario from United Kingdom? 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 United Kingdom to Ontario become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Ontario from United Kingdom today and book when prices fit your budget.

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Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from the United Kingdom to Ontario from £224

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 30/4. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from United Kingdom to Ontario

Round-trip from

One-way from

Find flight deals from United Kingdom to Ontario

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

Find flights from United Kingdom to Ontario within your budget

Best time to book a flight from United Kingdom to Ontario

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

Travel insights for flights from United Kingdom to Ontario

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

What is the cheapest month to book a flight from United Kingdom to Ontario?

What is the cheapest time of day to fly from GB to ONT?

Find hourly flight availability from United Kingdom 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 22 January 2025.

Rainfall in Ontario by month

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

Temperature in Ontario by month

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

Reviews of airlines servicing Ontario

Related info for your journey

Find useful and relevant information for your journey from United Kingdom to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly into for flights to Ontario from United Kingdom?

What are the cheapest airlines to fly from United Kingdom to Ontario one-way?

What are the most popular routes from United Kingdom to Ontario?

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

How can I find direct flights from United Kingdom to Ontario?

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

What is the cheapest month to book a flight from United Kingdom to 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 United Kingdom to Ontario

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

Top 6 airlines flying from United Kingdom to Ontario

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from United Kingdom to Ontario?

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

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

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

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Book with Flexibility

Travel Smart

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