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$284+ Cheap flights from Ontario (ONT) to the United Kingdom

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 1/26. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — LHR
Dec 29 — Jan 51
Sun 12/29
Sun 1/5
1 adult, Economy
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Cheap flight deals from Ontario to United Kingdom

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to United Kingdom (GB0). 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 24, 2024.

Round-trip from

$619
(oojo)

One-way from

$284
(Trip.com)
From Ontario to United Kingdom
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One-way flight from Ontario to United Kingdom
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Find flight deals from Ontario to United Kingdom

Cheapest flights from Ontario to United Kingdom
Explore the most affordable flight options available from Ontario to United Kingdom. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 24, 2024.

This Trip.com deal was found by Cheapflights users on 12/23. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2412:53 pmONT - LGW
1 stop13h 42mMultiple Airlines
Sun 1/1212:00 pmLGW - ONT
1 stop15h 56mMultiple Airlines
Deal found 12/23$770
This United Airlines deal was found by Cheapflights users on 12/24. 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.
Sun 12/296:00 amONT - LHR
1 stop22h 00mUnited Airlines
Wed 1/156:30 amLHR - ONT
2 stops19h 34mUnited Airlines
Deal found 12/24$949
This Expedia deal was found by Cheapflights users on 12/23. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/272:50 pmONT - LHR
1 stop13h 15mIberia
Sun 12/2910:05 amLHR - ONT
2 stops21h 52mIberia
Deal found 12/23$954
This British Airways deal was found by Cheapflights users on 12/24. 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.
Tue 12/3110:46 amONT - LHR
1 stop14h 54mBritish Airways
Fri 1/1712:10 pmLHR - ONT
1 stop18h 35mBritish Airways
Deal found 12/24$963
This American Airlines deal was found by Cheapflights users on 12/24. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/296:05 amONT - LGW
2 stops18h 55mAmerican Airlines
Sun 1/1211:20 amLGW - ONT
2 stops30h 39mAmerican Airlines
Deal found 12/24$977
This Delta deal was found by Cheapflights users on 12/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/296:52 amONT - LHR
1 stop15h 28mDelta
Sun 1/126:20 amLHR - ONT
2 stops18h 08mDelta
Deal found 12/24$1,003
This oojo deal was found by Cheapflights users on 12/22. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/263:06 pmONT - NCL
2 stops17h 19mBritish Airways
Sat 12/286:40 amNCL - ONT
2 stops23h 48mBritish Airways
Deal found 12/22$1,004
This oojo deal was found by Cheapflights users on 12/22. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2912:36 pmONT - MAN
2 stops17h 29mBritish Airways
Fri 1/179:30 pmMAN - ONT
2 stops29h 07mBritish Airways
Deal found 12/22$1,017
This Netflights deal was found by Cheapflights users on 12/22. 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 12/246:52 amONT - LHR
1 stop15h 28mVirgin Atlantic
Sun 1/1210:45 amLHR - ONT
1 stop21h 08mVirgin Atlantic
Deal found 12/22$1,048
This Expedia deal was found by Cheapflights users on 12/23. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/276:00 amONT - LHR
2 stops20h 10mAir Canada
Sun 12/293:00 pmLHR - ONT
2 stops34h 26mAir Canada
Deal found 12/23$1,062
This KLM deal was found by Cheapflights users on 12/24. 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 12/2611:56 amONT - LHR
1 stop14h 39mKLM
Mon 12/302:30 pmLHR - ONT
1 stop17h 11mKLM
Deal found 12/24$1,074
This Delta deal was found by Cheapflights users on 12/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/246:52 amONT - MAN
2 stops29h 08mDelta
Tue 12/3112:00 pmMAN - ONT
1 stop30h 46mDelta
Deal found 12/22$1,098

Find flights from Ontario to United Kingdom within your budget

Customize your flight search to find flights from Ontario to United Kingdom 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 24, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

OntarioGlasgow

ONT - GLA

ONTGLA

Ontario

Mon 1/27

7:00 am-9:50 am

2 stops18h 50m

Glasgow Intl

Wed 2/12

7:20 pm-10:04 pm

2 stops34h 44m

$619

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Tue 3/18

11:59 pm-10:05 am

2 stops27h 06m

Belfast City

Tue 3/25

7:25 pm-7:01 pm

2 stops30h 36m

$636

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Tue 2/11

4:25 pm-1:20 pm

1 stop12h 55m

London Heathrow

Wed 2/19

10:40 am-6:35 pm

1 stop15h 55m

$675

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Sun 2/16

10:24 am-10:35 am

1 stop16h 11m

London Gatwick

Thu 2/20

12:00 pm-8:35 pm

1 stop16h 35m

$677

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Tue 1/21

6:00 am-5:55 am

2 stops15h 55m

London Heathrow

Tue 1/28

7:40 am-6:04 pm

2 stops18h 24m

$680

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Tue 1/21

6:15 am-12:00 pm

1 stop21h 45m

London Heathrow

Tue 1/28

3:00 pm-8:51 pm

2 stops37h 51m

$681

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Mon 4/21

10:51 am-10:50 am

1 stop15h 59m

London Heathrow

Tue 4/29

6:10 am-10:11 pm

2 stops24h 01m

$684

OntarioManchester

ONT - MAN

ONTMAN

Ontario

Wed 1/22

10:47 am-12:00 pm

2 stops17h 13m

Manchester

Wed 1/29

6:25 am-8:51 pm

2 stops22h 26m

$688

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Sun 1/12

1:00 pm-10:35 am

1 stop13h 35m

London Heathrow

Tue 1/28

10:45 am-4:28 pm

1 stop13h 43m

$694

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Tue 2/18

6:59 am-6:40 pm

2 stops27h 41m

Belfast City

Wed 3/5

9:10 am-10:16 pm

2 stops21h 06m

$694

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/24

Showing 1-10 of 60 results
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Best time to book a flight from Ontario to United Kingdom

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

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

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

Currently, November is the cheapest month in which you can book a flight from Ontario to United Kingdom (average of $661). Flying from Ontario to United Kingdom in June is currently the most expensive (average of $1,135). 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 ONT to GB?

Find hourly flight availability from Ontario to United Kingdom. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 24, 2024.

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

Rainfall in United Kingdom by month

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

In terms of precipitation, rainfall in United Kingdom ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit United Kingdom when rainfall is around 1.6 in.

Temperature in United Kingdom by month

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

If weather is an important factor for your trip to United Kingdom, 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 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

Reviews of airlines servicing United Kingdom

Get insights into the airlines that provide service to United Kingdom. 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 United Kingdom. Reviews last updated December 24, 2024.
Get a feel of what it's like to fly with KLM, Delta and United Airlines from Ontario to United Kingdom by reading reviews from past customers. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
China Airlines
8.3
Very good
754 reviews

Comfort

8.0

Overall

8.3

Boarding

8.3

Crew

8.6

Entertainment

8.0

Food

7.8

Reviews

1 / 10

For the money it’s good value. Seat space rather small

China Airlines
8.3
Very good
754 reviews
China Airlines
8.3
Very good
754 reviews

Comfort

8.0

Overall

8.3

Boarding

8.3

Crew

8.6

Entertainment

8.0

Food

7.8

Reviews

1 / 10

For the money it’s good value. Seat space rather small

Delta
8.0
Very good
8,580 reviews
China Airlines
8.3
Very good
754 reviews

Comfort

8.0

Overall

8.3

Boarding

8.3

Crew

8.6

Entertainment

8.0

Food

7.8

Reviews

1 / 10

For the money it’s good value. Seat space rather small

KLM
7.8
Good
1,346 reviews
China Airlines
8.3
Very good
754 reviews

Comfort

8.0

Overall

8.3

Boarding

8.3

Crew

8.6

Entertainment

8.0

Food

7.8

Reviews

1 / 10

For the money it’s good value. Seat space rather small

Virgin Atlantic
7.5
Good
666 reviews
China Airlines
8.3
Very good
754 reviews

Comfort

8.0

Overall

8.3

Boarding

8.3

Crew

8.6

Entertainment

8.0

Food

7.8

Reviews

1 / 10

For the money it’s good value. Seat space rather small

JetBlue
7.4
Good
3,260 reviews
China Airlines
8.3
Very good
754 reviews

Comfort

8.0

Overall

8.3

Boarding

8.3

Crew

8.6

Entertainment

8.0

Food

7.8

Reviews

1 / 10

For the money it’s good value. Seat space rather small

Related info for your journey

Find useful and relevant information for your journey from Ontario to United Kingdom. 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 from for flights from Ontario to United Kingdom?

    If you book a flight to United Kingdom from Ontario, you will be flying from 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 Ontario to United Kingdom one-way?

    The cheapest airline one-way is WestJet, with whom users have recently found tickets for as low as $325. However, be on the lookout for offers from Virgin Atlantic and British Airways, as they are both options that can get you from Ontario to United Kingdom for a low price.

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

    Most travelers choose Ontario - London Heathrow, Ontario - London Gatwick or Ontario - Manchester when deciding on the best route from Ontario to United Kingdom.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Ontario to United Kingdom 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 Ontario to United Kingdom?

    Currently, November is the cheapest month in which you can book a flight from Ontario to United Kingdom (average of $661). Flying from Ontario to United Kingdom in June is currently the most expensive (average of $1,135). 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 Ontario to United Kingdom

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Top 5 airlines flying from Ontario to United Kingdom

Discover the top 5 airlines that operate flights from Ontario to United Kingdom. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 24, 2024.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest$455Average$629FlexibilityNo cancel feeOn-time72%
DeltaCheapest$481Average$997FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$609Average$833FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$611Average$928FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$619Average$790FlexibilityNo cancel feeOn-time69%
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