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 British Airways (£524), Air Canada (£525), and United Airlines (£531).

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 14% 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 £478, or £613 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 £369.

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.

£751+ Flights from the United Kingdom to Ontario, California

Cheap flight deals from United Kingdom to Ontario

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 21 November 2024.

Wed 4/1220:00LHR - ONT

2 stops34h 13mMultiple Airlines

Tue 10/1206:05ONT - LHR

1 stop19h 35mMultiple Airlines

Deal found 20/11£443

Wed 4/1206:20LHR - ONT

2 stops18h 25mDelta

Tue 10/1206:00ONT - LHR

2 stops17h 05mDelta

Deal found 20/11£447

Thu 5/1212:00LGW - ONT

1 stop15h 59mMultiple Airlines

Sun 8/1208:04ONT - LGW

1 stop18h 31mMultiple Airlines

Deal found 20/11£484

Wed 11/1208:00LHR - ONT

2 stops21h 42mUnited Airlines

Tue 24/1206:10ONT - LHR

2 stops21h 05mUnited Airlines

Deal found 20/11£511

Tue 10/1210:45LHR - ONT

1 stop13h 45mAir France

Tue 14/113:00ONT - LHR

1 stop13h 35mAir France

Deal found 19/11£517

Mon 9/1214:30LHR - ONT

1 stop16h 32mKLM

Tue 21/113:00ONT - LHR

1 stop13h 35mKLM

Deal found 20/11£518

Fri 6/1213:50LHR - ONT

1 stop16h 23mIberia

Tue 10/1210:42ONT - LHR

1 stop12h 38mIberia

Deal found 20/11£548

Wed 11/1208:20LHR - ONT

2 stops18h 07mAmerican Airlines

Mon 23/1216:25ONT - LHR

1 stop12h 55mAmerican Airlines

Deal found 20/11£552

Tue 10/1213:45LHR - ONT

1 stop18h 13mLufthansa

Wed 15/106:15ONT - LHR

1 stop17h 10mLufthansa

Deal found 19/11£568

Tue 10/1208:20LHR - ONT

1 stop21h 53mBritish Airways

Tue 17/1207:16ONT - LHR

1 stop15h 04mBritish Airways

Deal found 19/11£603

Mon 9/1214:30LHR - ONT

1 stop15h 33mFinnair

Fri 13/1210:41ONT - LHR

1 stop12h 39mFinnair

Deal found 20/11£630

Wed 4/1217:00LCY - ONT

2 stops33h 38mBritish Airways

Tue 10/1207:16ONT - LCY

2 stops19h 34mBritish Airways

Deal found 20/11£635

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 21 November 2024.

Wed 4/1220:00LHR - ONT

2 stops34h 13mMultiple Airlines

Tue 10/1206:05ONT - LHR

1 stop19h 35mMultiple Airlines

Deal found 20/11£443

Wed 4/1206:20LHR - ONT

2 stops18h 25mDelta

Tue 10/1206:00ONT - LHR

2 stops17h 05mDelta

Deal found 20/11£447

Mon 27/112:30LGW - ONT

2 stops38h 07mFinnair

Mon 3/206:00ONT - LGW

2 stops28h 50mFinnair

Deal found 20/11£473

Tue 18/310:05LHR - ONT

1 stop14h 59mLufthansa

Tue 25/313:40ONT - LHR

1 stop13h 00mLufthansa

Deal found 20/11£485

Mon 27/113:15LHR - ONT

1 stop17h 17mVirgin Atlantic

Mon 3/213:00ONT - LHR

1 stop13h 35mVirgin Atlantic

Deal found 20/11£489

Tue 14/110:45LHR - ONT

1 stop13h 43mKLM

Wed 22/113:00ONT - LHR

1 stop13h 35mKLM

Deal found 20/11£490

Mon 5/514:50LHR - ONT

1 stop13h 27mUnited Airlines

Mon 12/513:00ONT - LHR

1 stop12h 40mUnited Airlines

Deal found 20/11£500

Tue 10/1210:45LHR - ONT

1 stop13h 45mAir France

Tue 14/113:00ONT - LHR

1 stop13h 35mAir France

Deal found 19/11£517

Mon 5/510:50LGW - ONT

2 stops20h 45mIberia

Mon 12/515:00ONT - LGW

2 stops21h 00mIberia

Deal found 20/11£520

Wed 11/1208:20LHR - ONT

2 stops18h 07mAmerican Airlines

Mon 23/1216:25ONT - LHR

1 stop12h 55mAmerican Airlines

Deal found 20/11£552

Mon 27/108:20LHR - ONT

1 stop18h 17mBritish Airways

Mon 3/206:00ONT - LHR

2 stops27h 15mBritish Airways

Deal found 20/11£555

Fri 13/1213:00LHR - ONT

2 stops42h 58mAir Canada

Tue 24/1213:42ONT - LHR

2 stops32h 48mAir Canada

Deal found 20/11£637

Last-minute flights from United Kingdom to Ontario
Discover last-minute flight deals from United Kingdom to Ontario. Data last updated 21 November 2024 and is based on user searches.

Tue 26/1111:05MAN - ONT

2 stops19h 18mUnited Airlines

Tue 3/1210:35ONT - MAN

2 stops20h 15mUnited Airlines

Deal found 19/11£879

Tue 26/1112:10LHR - ONT

2 stops36h 48mMultiple Airlines

Thu 28/1113:32ONT - LHR

2 stops20h 18mMultiple Airlines

Deal found 20/11£881

Tue 26/1109:25EDI - ONT

2 stops20h 37mUnited Airlines

Tue 3/1206:10ONT - EDI

2 stops17h 45mUnited Airlines

Deal found 20/11£1,011

Wed 27/1106:30LHR - ONT

2 stops21h 12mDelta

Mon 2/1206:00ONT - LHR

2 stops17h 05mDelta

Deal found 20/11£592

Wed 27/1114:30LHR - ONT

1 stop15h 32mBritish Airways

Wed 4/1210:43ONT - LHR

1 stop12h 37mBritish Airways

Deal found 20/11£680

Wed 27/1107:50MAN - ONT

2 stops18h 43mBritish Airways

Wed 11/1216:25ONT - MAN

2 stops15h 55mBritish Airways

Deal found 20/11£750

Wed 27/1107:45LCY - ONT

2 stops19h 57mDelta

Mon 2/1207:10ONT - LCY

2 stops17h 00mDelta

Deal found 20/11£871

Wed 27/1111:55LGW - ONT

2 stops20h 04mMultiple Airlines

Mon 2/1210:00ONT - LGW

2 stops16h 55mMultiple Airlines

Deal found 20/11£1,079

Thu 28/1110:45LHR - ONT

1 stop15h 21mKLM

Thu 5/1207:10ONT - LHR

1 stop15h 10mKLM

Deal found 21/11£731

Thu 28/1109:20LHR - ONT

1 stop18h 37mLufthansa

Thu 5/1206:10ONT - LHR

1 stop17h 20mLufthansa

Deal found 20/11£749

Sat 30/1110:05LHR - ONT

1 stop20h 18mUnited Airlines

Sat 7/1206:00ONT - LHR

1 stop17h 25mUnited Airlines

Deal found 20/11£1,092

Sun 1/1213:50LHR - ONT

1 stop15h 15mIberia

Fri 21/210:51ONT - LHR

1 stop13h 24mIberia

Deal found 20/11£2,086

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 21 November 2024.

Thu 23/112:00LGW - ONT

1 stop31h 32mMultiple Airlines

Deal found 20/11£278

Thu 23/114:50LHR - ONT

2 stops24h 21mMultiple Airlines

Deal found 20/11£335

Mon 9/1206:10ABZ - ONT

3 stops49h 34mMultiple Airlines

Deal found 21/11£377

Mon 9/1208:30LCY - ONT

3 stops59h 14mMultiple Airlines

Deal found 20/11£482

Mon 2/1217:30MAN - ONT

3 stops50h 14mMultiple Airlines

Deal found 20/11£484

Mon 9/1214:30LHR - ONT

1 stop15h 33mBritish Airways

Deal found 20/11£524

Wed 27/1113:00LHR - ONT

2 stops33h 44mAir Canada

Deal found 20/11£525

Fri 29/1106:30LHR - ONT

2 stops22h 14mUnited Airlines

Deal found 19/11£531

Tue 26/1109:20LHR - ONT

1 stop20h 42mLufthansa

Deal found 20/11£542

Sun 8/1211:50LHR - ONT

1 stop16h 50mFinnair

Deal found 20/11£585

Sun 26/108:55MAN - ONT

2 stops21h 21mIberia

Deal found 20/11£605

Mon 13/107:50MAN - ONT

2 stops18h 47mFinnair

Deal found 20/11£672

Find flights from United Kingdom to Ontario within your budget

Fly from

Fly to

Route

Depart

Return

Price

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 4/12

20:00-22:13

2 stops34h 13m

Ontario

Tue 10/12

06:05-09:40

1 stop19h 35m

£443

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 4/12

06:20-16:45

2 stops18h 25m

Ontario

Tue 10/12

06:00-07:05

2 stops17h 05m

£447

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Mon 27/1

12:30-18:37

2 stops38h 07m

Ontario

Mon 3/2

06:00-18:50

2 stops28h 50m

£473

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Sun 12/1

12:00-19:56

1 stop15h 56m

Ontario

Mon 27/1

21:36-10:35

1 stop28h 59m

£476

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Tue 18/3

10:05-18:04

1 stop14h 59m

Ontario

Tue 25/3

13:40-09:40

1 stop13h 00m

£485

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Mon 27/1

13:15-22:32

1 stop17h 17m

Ontario

Mon 3/2

13:00-10:35

1 stop13h 35m

£489

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Tue 14/1

10:45-16:28

1 stop13h 43m

Ontario

Tue 21/1

13:00-10:35

1 stop13h 35m

£490

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Mon 5/5

14:50-20:17

1 stop13h 27m

Ontario

Mon 12/5

13:00-09:40

1 stop12h 40m

£500

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Tue 10/12

10:45-16:30

1 stop13h 45m

Ontario

Tue 14/1

13:00-10:35

1 stop13h 35m

£517

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Mon 5/5

10:50-23:35

2 stops20h 45m

Ontario

Mon 12/5

15:00-20:00

2 stops21h 00m

£520

Flights are sorted by cheapest return flights first.

Deals found on 20/11

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, February is the cheapest month in which you can book a flight from United Kingdom to Ontario (average of £514). 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 KLM, Delta and Finnair. 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

8,756 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

8,756 reviews

Delta

8.0

Very Good

8,756 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

1,350 reviews

Delta

8.0

Very Good

8,756 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

7.7

Good

1,300 reviews

Delta

8.0

Very Good

8,756 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

663 reviews

Delta

8.0

Very Good

8,756 reviews

Check prices

Reviews

1 / 10

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

Air France

7.4

Good

1,523 reviews

Delta

8.0

Very Good

8,756 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 British Airways (£524), Air Canada (£525), and United Airlines (£531).
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, February is the cheapest month in which you can book a flight from United Kingdom to Ontario (average of £514). 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£392	Average£533	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
British Airways	Cheapest£410	Average£636	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Finnair	Cheapest£433	Average£517	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
Lufthansa	Cheapest£478	Average£538	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
United Airlines	Cheapest£531	Average£742	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
KLM	Cheapest£597	Average£718	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.

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Cheap flights from the United Kingdom to Ontario from £278

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 23/1. 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

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 21 November 2024.

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 21 November 2024.

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 21 November 2024.

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

To help decide which airline to fly from United Kingdom to Ontario, see what other customers have to say about KLM, Delta and Finnair. 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.

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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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 21 November 2024.