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Ontario

$375+ Cheap flights from the United Kingdom to Ontario (ONT)

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 1/12. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — ONT
Dec 25 — Jan 11
Wed 12/25
Wed 1/1
1 adult, Economy
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Cheap flight deals from United Kingdom to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from United Kingdom (GB0) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 20, 2024.

Round-trip from

$504
(Lufthansa)

One-way from

$375
(Trip.com)
From United Kingdom to Ontario
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One-way flight from United Kingdom to Ontario
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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 December 20, 2024.

This The Travel House deal was found by Cheapflights users on 12/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/3011:35 amLHR - ONT
1 stop13h 51mLufthansa
Thu 2/206:00 amONT - LHR
1 stop17h 25mLufthansa
Deal found 12/20$539
This TravelUp deal was found by Cheapflights users on 12/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2910:45 amLHR - ONT
1 stop21h 43mVirgin Atlantic
Wed 1/151:21 pmONT - LHR
1 stop12h 39mVirgin Atlantic
Deal found 12/19$547
This KLM deal was found by Cheapflights users on 12/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/262:30 pmLHR - ONT
1 stop17h 11mKLM
Tue 2/181:00 pmONT - LHR
1 stop13h 35mKLM
Deal found 12/19$655
This Kissandfly.com deal was found by Cheapflights users on 12/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2810:05 amLHR - ONT
1 stop20h 55mAustrian Airlines
Fri 2/286:00 amONT - LHR
1 stop17h 25mAustrian Airlines
Deal found 12/18$748
This Iberia deal was found by Cheapflights users on 12/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/281:50 pmLHR - ONT
1 stop15h 07mIberia
Fri 2/282:54 pmONT - LHR
1 stop13h 10mIberia
Deal found 12/19$834
This United Airlines deal was found by Cheapflights users on 12/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/266:25 amMAN - ONT
2 stops19h 28mUnited Airlines
Fri 1/245:10 amONT - MAN
2 stops22h 55mUnited Airlines
Deal found 12/19$836
This United Airlines deal was found by Cheapflights users on 12/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2410:05 amLHR - ONT
1 stop15h 48mUnited Airlines
Tue 12/311:57 pmONT - LHR
1 stop14h 03mUnited Airlines
Deal found 12/19$1,124
This Netflights deal was found by Cheapflights users on 12/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Netflights is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2410:40 amLHR - ONT
1 stop15h 14mBritish Airways
Tue 1/74:25 pmONT - LHR
1 stop12h 55mBritish Airways
Deal found 12/20$1,145
This TravelJunction deal was found by Cheapflights users on 12/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelJunction is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2410:40 amLHR - ONT
1 stop15h 53mFinnair
Thu 1/97:00 amONT - LHR
1 stop15h 20mFinnair
Deal found 12/19$1,192
This Netflights deal was found by Cheapflights users on 12/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Netflights is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/268:45 amMAN - ONT
2 stops23h 30mBritish Airways
Fri 1/244:25 pmONT - MAN
2 stops16h 10mBritish Airways
Deal found 12/20$1,232
This British Airways deal was found by Cheapflights users on 12/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/259:50 amEDI - ONT
2 stops20h 38mBritish Airways
Wed 1/112:36 pmONT - EDI
2 stops15h 49mBritish Airways
Deal found 12/19$1,257
This TravelJunction deal was found by Cheapflights users on 12/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelJunction is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/245:05 pmLHR - ONT
2 stops33h 29mMultiple Airlines
Tue 1/77:00 amONT - LHR
1 stop21h 05mMultiple Airlines
Deal found 12/20$1,274

Find flights from United Kingdom to Ontario within your budget

Customize your flight search to find flights from United Kingdom to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 20, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Tue 1/14

9:20 am-9:57 pm

1 stop20h 37m

Ontario

Tue 1/21

6:15 am-12:00 pm

1 stop21h 45m

$504

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Mon 2/3

7:40 am-8:51 pm

2 stops21h 11m

Ontario

Mon 2/10

6:15 am-7:25 am

1 stop17h 10m

$505

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 1/8

10:00 am-9:51 am

2 stops31h 51m

Ontario

Wed 1/15

6:15 am-12:00 pm

1 stop21h 45m

$524

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Mon 1/13

2:30 pm-10:52 pm

1 stop16h 22m

Ontario

Thu 1/23

1:00 pm-10:35 am

1 stop13h 35m

$527

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Mon 2/3

1:50 pm-10:45 pm

1 stop16h 55m

Ontario

Mon 2/10

3:04 pm-12:05 pm

1 stop13h 01m

$528

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 1/15

10:45 am-11:53 pm

1 stop21h 08m

Ontario

Fri 1/24

1:21 pm-10:00 am

1 stop12h 39m

$567

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Tue 1/14

11:10 am-8:51 pm

2 stops17h 41m

Ontario

Tue 2/4

5:10 am-7:10 am

2 stops18h 00m

$574

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Thu 1/16

11:30 am-10:52 pm

2 stops19h 22m

Ontario

Thu 1/23

6:00 am-11:10 am

2 stops21h 10m

$580

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Tue 1/14

10:40 am-6:37 pm

1 stop15h 57m

Ontario

Tue 2/4

3:04 pm-12:05 pm

1 stop13h 01m

$585

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Thu 1/16

1:50 pm-10:16 pm

1 stop16h 26m

Ontario

Thu 1/23

10:56 am-8:15 am

1 stop13h 19m

$596

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/20

Showing 1-10 of 60 results
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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 round-trip 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, August is the cheapest month in which you can book a flight from United Kingdom to Ontario (average of $246). Flying from United Kingdom to Ontario in March is currently the most expensive (average of $317). 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?

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 December 20, 2024.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from United Kingdom to Ontario as you normally would.

Rainfall in Ontario by month

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

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals 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 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated December 20, 2024.
To help decide which airline to fly from United Kingdom to Ontario, see what other customers have to say about United Airlines, Delta and British Airways. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,601 reviews

Comfort

8.0

Overall

8.0

Boarding

8.2

Food

7.3

Entertainment

7.9

Crew

8.6

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
8,601 reviews
Delta
8.0
Very good
8,601 reviews

Comfort

8.0

Overall

8.0

Boarding

8.2

Food

7.3

Entertainment

7.9

Crew

8.6

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
1,349 reviews
Delta
8.0
Very good
8,601 reviews

Comfort

8.0

Overall

8.0

Boarding

8.2

Food

7.3

Entertainment

7.9

Crew

8.6

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
1,285 reviews
Delta
8.0
Very good
8,601 reviews

Comfort

8.0

Overall

8.0

Boarding

8.2

Food

7.3

Entertainment

7.9

Crew

8.6

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
668 reviews
Delta
8.0
Very good
8,601 reviews

Comfort

8.0

Overall

8.0

Boarding

8.2

Food

7.3

Entertainment

7.9

Crew

8.6

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
1,502 reviews
Delta
8.0
Very good
8,601 reviews

Comfort

8.0

Overall

8.0

Boarding

8.2

Food

7.3

Entertainment

7.9

Crew

8.6

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

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?

    If you book a flight to Ontario from United Kingdom, you will be flying to Ontario, which is the city’s only airport. Ontario (ONT) is located 3.1 mi from the center of Ontario.

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

    The cheapest airline one-way is Iberia, with whom users have recently found tickets for as low as $626. However, be on the lookout for offers from British Airways and Finnair, as they are both options that can get you from United Kingdom to Ontario for a low price.

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

    Most travelers choose London Heathrow - Ontario, Manchester - Ontario or London Gatwick - Ontario when deciding on the best 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 vacation 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, August is the cheapest month in which you can book a flight from United Kingdom to Ontario (average of $246). Flying from United Kingdom to Ontario in March is currently the most expensive (average of $317). 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

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Alternative routes for United Kingdom to Ontario

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