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Cheap flights from Ontario to the United Kingdom from C$ 364

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 15/10. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — LHR
5 Aug — 12 Aug1
1 adult

Cheap flight deals from Ontario to United Kingdom

Keep the following information in mind while searching for Ontario to United Kingdom flight deals. Data was last updated 31 July 2025.

Round-trip from

C$ 735

One-way from

C$ 364

Popular in

December

Cheapest in

February

Average price

C$ 1,062

Good round-trip deal

C$ 791 or less

Good one-way deal

C$ 266 or less
Air Canada
  • Air Canada
  • 13/9-20/9
  • 2 total stops
  • 20h 20m total
  • Ontario to United Kingdom
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TAP AIR PORTUGAL
  • TAP AIR PORTUGAL
  • 15/10
  • 1 total stop
  • 11h 50m total
  • Ontario to United Kingdom
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (C$ 47 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease (C$ 34 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Price to beat on a round-trip flight from Ontario to United Kingdom.
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Price to beat on a 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 31 July 2025.

Mon 8/94:00 p.m.YYZ - LHR
1 stop9h 30mAir Canada
Sun 14/98:30 a.m.LHR - YYZ
Nonstop7h 55mAir Canada
Deal found 30/7C$ 735
Fri 31/1010:35 p.m.YYZ - LGW
Nonstop7h 10mAir Transat
Mon 10/1111:40 a.m.LGW - YYZ
Nonstop8h 20mAir Transat
Deal found 30/7C$ 735
Fri 26/99:00 p.m.YTZ - LGW
1 stop31h 50mAir Transat
Sun 5/1011:35 a.m.LGW - YTZ
1 stop13h 35mAir Transat
Deal found 30/7C$ 737
Mon 1/127:45 p.m.YYZ - LHR
1 stop10h 05mIcelandair
Thu 11/1212:15 p.m.LHR - YYZ
1 stop11h 00mIcelandair
Deal found 30/7C$ 738
Mon 25/810:10 p.m.YYZ - LGW
1 stop17h 45mMultiple Airlines
Wed 17/99:40 a.m.LGW - YYZ
Nonstop8h 05mMultiple Airlines
Deal found 29/7C$ 739
Thu 18/911:55 p.m.YYZ - STN
1 stop14h 35mMultiple Airlines
Fri 26/96:40 a.m.STN - YYZ
1 stop13h 00mMultiple Airlines
Deal found 29/7C$ 739
Fri 12/910:25 a.m.YTZ - LHR
1 stop15h 05mAir Canada
Tue 16/99:30 a.m.LHR - YTZ
1 stop13h 15mAir Canada
Deal found 30/7C$ 741
Sun 7/910:00 a.m.YUL - LGW
1 stop16h 55mAir Transat
Tue 23/911:35 a.m.LGW - YUL
Nonstop7h 40mAir Transat
Deal found 27/7C$ 742
Wed 15/1010:30 p.m.YYZ - LHR
Nonstop7h 10mDelta
Wed 22/109:55 a.m.LHR - YYZ
1 stop15h 00mDelta
Deal found 30/7C$ 742
Sat 6/99:55 p.m.YUL - LHR
Nonstop6h 40mAir Canada
Tue 23/96:00 a.m.LHR - YUL
2 stops17h 20mAir Canada
Deal found 27/7C$ 742
Mon 22/98:15 p.m.YUL - LGW
1 stop30h 40mPorter Airlines
Mon 13/1012:40 p.m.LGW - YUL
1 stop11h 40mPorter Airlines
Deal found 27/7C$ 743
Thu 4/911:55 p.m.YYZ - LTN
1 stop11h 40mMultiple Airlines
Fri 5/99:05 p.m.LTN - YYZ
2 stops24h 45mMultiple Airlines
Deal found 29/7C$ 743

Cheapflights Fare Finder

 
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 629,999 searches. Data last updated 31 July 2025.
Use the filters below to find and compare flights from Ontario to the United Kingdom that are best for you.

Fly from

Ontario

Fly to

United Kingdom

Route

Depart

Return

Price

TorontoLondon

YYZ - LHR

YYZLHR

Toronto Pearson Intl

Mon 8/9

4:00 p.m.-6:30 a.m.

1 stop9h 30m

London Heathrow

Sun 14/9

8:30 a.m.-11:25 a.m.

Nonstop7h 55m

C$ 735

TorontoLondon

YYZ - LGW

YYZLGW

Toronto Pearson Intl

Fri 31/10

10:35 p.m.-9:45 a.m.

Nonstop7h 10m

London Gatwick

Tue 11/11

11:40 a.m.-3:00 p.m.

Nonstop8h 20m

C$ 735

TorontoLondon

YTZ - LGW

YTZLGW

Toronto Island

Fri 26/9

9:00 p.m.-9:50 a.m.

1 stop31h 50m

London Gatwick

Sun 5/10

11:35 a.m.-8:10 p.m.

1 stop13h 35m

C$ 737

TorontoLondon

YYZ - LHR

YYZLHR

Toronto Pearson Intl

Mon 1/12

7:45 p.m.-10:50 a.m.

1 stop10h 05m

London Heathrow

Thu 11/12

12:15 p.m.-6:15 p.m.

1 stop11h 00m

C$ 738

TorontoLondon

YYZ - LGW

YYZLGW

Toronto Pearson Intl

Mon 25/8

10:10 p.m.-8:55 p.m.

1 stop17h 45m

London Gatwick

Wed 17/9

9:40 a.m.-12:45 p.m.

Nonstop8h 05m

C$ 739

TorontoLondon

YYZ - STN

YYZSTN

Toronto Pearson Intl

Thu 18/9

11:55 p.m.-7:30 p.m.

1 stop14h 35m

London Stansted

Fri 26/9

6:40 a.m.-2:40 p.m.

1 stop13h 00m

C$ 739

TorontoLondon

YTZ - LHR

YTZLHR

Toronto Island

Fri 12/9

10:25 a.m.-6:30 a.m.

1 stop15h 05m

London Heathrow

Tue 16/9

9:30 a.m.-5:45 p.m.

1 stop13h 15m

C$ 741

TorontoLondon

YYZ - LHR

YYZLHR

Toronto Pearson Intl

Wed 15/10

10:30 p.m.-10:40 a.m.

Nonstop7h 10m

London Heathrow

Wed 22/10

9:55 a.m.-7:55 p.m.

1 stop15h 00m

C$ 742

MontrealLondon

YUL - LGW

YULLGW

Montreal Pierre Elliott Trudeau Intl

Sun 7/9

10:00 a.m.-7:55 a.m.

1 stop16h 55m

London Gatwick

Tue 23/9

11:35 a.m.-2:15 p.m.

Nonstop7h 40m

C$ 742

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Sat 6/9

9:55 p.m.-9:35 a.m.

Nonstop6h 40m

London Heathrow

Tue 23/9

6:00 a.m.-6:20 p.m.

2 stops17h 20m

C$ 742

Flights are sorted by cheapest round-trip flights first.

Deals found on 29/7

Showing 1-10 of 58 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.

Cheapflights Insights

Everything you need to know about your flight from Ontario to the United Kingdom

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

Currently, January is the cheapest month in which you can book a flight from Region of Ontario to United Kingdom (average of C$ 560). Flying from Region of Ontario to United Kingdom in July is currently the most expensive (average of C$ 857). 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 ON 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 31 July 2025.

When flying from Region of Ontario to United Kingdom, 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 Region of Ontario to United Kingdom

Explore weekly flight availability from Ontario to United Kingdom. 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 31 July 2025.

The most flights from CAON to GB0 are scheduled on a Tuesday (46 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (34 on average).

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 31 July 2025.
See what other customers who have flown with Delta,Porter Airlines, andKLM from Ontario to the United Kingdom have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,980 reviews
Check prices

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,980 reviews
Delta
8.0
Very good
7,980 reviews
Check prices

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Porter Airlines
8.0
Very good
318 reviews
Delta
8.0
Very good
7,980 reviews
Check prices

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,383 reviews
Delta
8.0
Very good
7,980 reviews
Check prices

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air Transat
7.7
Good
424 reviews
Delta
8.0
Very good
7,980 reviews
Check prices

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Austrian Airlines
7.6
Good
823 reviews
Delta
8.0
Very good
7,980 reviews
Check prices

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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

    One-way options have recently been found by users for as low as C$ 364 on TAP AIR PORTUGAL. Other airlines that offer cheap prices include Air Transat from C$ 367 and Porter Airlines from C$ 368 one-way.

  • 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 Region of Ontario to United Kingdom?

    Currently, January is the cheapest month in which you can book a flight from Region of Ontario to United Kingdom (average of C$ 560). Flying from Region of Ontario to United Kingdom in July is currently the most expensive (average of C$ 857). 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

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Alternative routes for Ontario to United Kingdom

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Ontario to United Kingdom

Discover the top 10 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 629,999 searches. Data last updated 31 July 2025.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapestC$ 219AverageC$ 794FlexibilityNo cancel feeOn-time60%
Search WestJet flights
PLAYCheapestC$ 482AverageC$ 585FlexibilityNo cancel feeOn-timeN/A
Search PLAY flights
WestJet EncoreCheapestC$ 550AverageC$ 702FlexibilityNo cancel feeOn-timeN/A
Search WestJet Encore flights
Air TransatCheapestC$ 577AverageC$ 1,000FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
TAP AIR PORTUGALCheapestC$ 598AverageC$ 750FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
IcelandairCheapestC$ 621AverageC$ 906FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Porter AirlinesCheapestC$ 628AverageC$ 969FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
Aer LingusCheapestC$ 661AverageC$ 1,011FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
DeltaCheapestC$ 698AverageC$ 872FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Air CanadaCheapestC$ 705AverageC$ 1,120FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

Fly with Cheapflights

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

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

Deals for Ontario to United Kingdom 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 Ontario to United Kingdom?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to United Kingdom from Ontario.

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from Ontario to United Kingdom, users can toggle the no change fees filter when performing a flight search.

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

Yes, Cheapflights offers price alerts on Ontario to United Kingdom flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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