Find flights
Deals
When to book
FAQs

Cheap flights from Ontario to the United Kingdom from C$ 335

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 15/1. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — LHR
28 Nov — 5 Dec1
1 adult
1 adult, Economy, 0 bags

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 29 October 2025.

Round-trip from

C$ 732

One-way from

C$ 335

Popular in

December

Cheapest in

February

Average price

C$ 840

Good round-trip deal

C$ 761 or less

Good one-way deal

C$ 307 or less
TAP AIR PORTUGAL
  • TAP AIR PORTUGAL
  • 8/1-18/1
  • 2 total stops
  • 26h 50m total
  • Ontario to United Kingdom
Search Deals
26/11
  • 26/11
  • 1 total stop
  • 17h 40m total
  • Ontario to United Kingdom
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (C$ 61 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 39 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals
Price to beat on a round-trip flight from Ontario to United Kingdom.
Search Deals
Price to beat on a one-way flight from Ontario to United Kingdom.
Search Deals

Find flight deals from Ontario to United Kingdom

Enter your travel dates to find the best prices.

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 29 October 2025.

Wed 19/115:25 p.m.YYZ - LGW
1 stop11h 35mMultiple Airlines
Sun 23/118:25 a.m.LGW - YYZ
1 stop12h 30mMultiple Airlines
Deal found 29/10C$ 734
Tue 2/125:35 p.m.YYZ - LHR
1 stop14h 05mTAP AIR PORTUGAL
Wed 10/126:00 a.m.LHR - YYZ
1 stop20h 15mTAP AIR PORTUGAL
Deal found 27/10C$ 736
Sun 9/115:25 p.m.YYZ - LGW
1 stop10h 00mMultiple Airlines
Sun 16/118:25 a.m.LGW - YYZ
1 stop12h 30mMultiple Airlines
Deal found 28/10C$ 736
Fri 5/125:25 p.m.YYZ - STN
1 stop14h 55mMultiple Airlines
Sun 14/128:30 a.m.STN - YYZ
1 stop12h 25mMultiple Airlines
Deal found 28/10C$ 736
Mon 1/1210:45 p.m.YYZ - LHR
1 stop13h 45mTAP AIR PORTUGAL
Fri 23/112:25 p.m.LHR - YYZ
1 stop13h 50mTAP AIR PORTUGAL
Deal found 28/10C$ 738
Mon 1/1210:45 p.m.YYZ - LGW
1 stop12h 00mTAP AIR PORTUGAL
Tue 9/124:35 p.m.LGW - YYZ
1 stop33h 40mTAP AIR PORTUGAL
Deal found 29/10C$ 739
Mon 8/1210:45 p.m.YYZ - LHR
1 stop13h 45mTAP AIR PORTUGAL
Mon 26/18:15 a.m.LHR - YYZ
1 stop18h 00mTAP AIR PORTUGAL
Deal found 28/10C$ 741
Wed 3/1210:45 p.m.YYZ - LHR
1 stop11h 45mTAP AIR PORTUGAL
Wed 10/126:00 a.m.LHR - YYZ
1 stop20h 15mTAP AIR PORTUGAL
Deal found 27/10C$ 743
Sun 30/115:30 p.m.YYZ - LGW
1 stop17h 15mTAP AIR PORTUGAL
Mon 8/1210:40 a.m.LGW - YYZ
1 stop33h 40mTAP AIR PORTUGAL
Deal found 27/10C$ 745
Fri 14/119:35 p.m.YYZ - LGW
Nonstop7h 10mAir Transat
Fri 6/211:40 a.m.LGW - YYZ
Nonstop8h 20mAir Transat
Deal found 27/10C$ 746
Sun 23/115:15 p.m.YYZ - STN
2 stops24h 20mMultiple Airlines
Sat 29/116:00 p.m.STN - YYZ
2 stops25h 45mMultiple Airlines
Deal found 27/10C$ 746
Mon 1/1210:45 p.m.YYZ - LHR
1 stop18h 55mTAP AIR PORTUGAL
Sat 6/127:55 p.m.LHR - YYZ
1 stop23h 30mTAP AIR PORTUGAL
Deal found 28/10C$ 748

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 29 October 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 - LGW

YYZLGW

Toronto Pearson Intl

Fri 30/1

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

Nonstop7h 10m

London Gatwick

Sat 28/2

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

Nonstop8h 20m

C$ 748

TorontoLondon

YYZ - LGW

YYZLGW

Toronto Pearson Intl

Mon 23/2

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

Nonstop7h 10m

London Gatwick

Sat 28/2

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

Nonstop8h 20m

C$ 749

TorontoLondon

YYZ - LGW

YYZLGW

Toronto Pearson Intl

Wed 7/1

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

Nonstop7h 10m

London Gatwick

Mon 16/2

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

Nonstop8h 20m

C$ 767

MontrealLondon

YUL - LGW

YULLGW

Montreal Pierre Elliott Trudeau Intl

Wed 7/1

2:30 p.m.-9:45 a.m.

1 stop14h 15m

London Gatwick

Wed 14/1

11:40 a.m.-12:35 a.m.

1 stop17h 55m

C$ 769

MontrealLondon

YUL - LGW

YULLGW

Montreal Pierre Elliott Trudeau Intl

Wed 19/11

2:30 p.m.-9:45 a.m.

1 stop14h 15m

London Gatwick

Mon 24/11

11:40 a.m.-10:20 p.m.

1 stop15h 40m

C$ 788

MontrealLondon

YUL - LGW

YULLGW

Montreal Pierre Elliott Trudeau Intl

Mon 1/12

6:45 a.m.-9:45 a.m.

1 stop22h 00m

London Gatwick

Wed 3/12

11:40 a.m.-6:25 p.m.

1 stop11h 45m

C$ 789

TorontoLondon

YYZ - STN

YYZSTN

Toronto Pearson Intl

Fri 23/1

9:25 p.m.-11:55 p.m.

2 stops21h 30m

London Stansted

Sun 25/1

6:15 a.m.-7:10 p.m.

2 stops17h 55m

C$ 795

MontrealLondon

YUL - LGW

YULLGW

Montreal Pierre Elliott Trudeau Intl

Thu 29/1

2:30 p.m.-9:45 a.m.

1 stop14h 15m

London Gatwick

Sat 28/2

11:40 a.m.-8:55 p.m.

1 stop14h 15m

C$ 798

MontrealLondon

YUL - STN

YULSTN

Montreal Pierre Elliott Trudeau Intl

Sun 30/11

9:45 p.m.-7:25 p.m.

1 stop16h 40m

London Stansted

Wed 10/12

6:30 a.m.-8:15 p.m.

1 stop18h 45m

C$ 808

MontrealLondon

YUL - STN

YULSTN

Montreal Pierre Elliott Trudeau Intl

Fri 28/11

9:45 p.m.-8:00 p.m.

1 stop17h 15m

London Stansted

Fri 5/12

6:50 a.m.-8:15 p.m.

1 stop18h 25m

C$ 808

Flights are sorted by cheapest round-trip flights first.

Deals found on 28/10

Showing 1-10 of 60 results
1
2
3
...
6

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, May is the cheapest month in which you can book a flight from Region of Ontario to United Kingdom (average of C$ 98). Flying from Region of Ontario to United Kingdom in December is currently the most expensive (average of C$ 710). 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 29 October 2025.

It’s optimal to fly from Region of Ontario to United Kingdom in the evening. By choosing this option you can save up to 21% on the cost of your flight, compared to a flight at noon.

What is the cheapest day to fly from Region of Ontario to United Kingdom?

Use this chart to determine the cheapest time to fly round-trip from Ontario to United Kingdom. Price data was last updated on 16 December 2024.

Travelers seeking maximum savings on their Region of Ontario to United Kingdom flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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.

  • How long is the flight from Region of Ontario to United Kingdom?

    There are many flights that can get you from Region of Ontario to United Kingdom in 7h 10m. Fly via Air Transat, Porter Airlines, or Virgin Atlantic to get the fastest option. The distance between Region of Ontario and United Kingdom is about 5734 km. Both multi-stop and direct flights can be found to your destination and back.

  • 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$ 335 on TAP AIR PORTUGAL. Other airlines that offer cheap prices include WestJet from C$ 450 and SWISS from C$ 562 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, May is the cheapest month in which you can book a flight from Region of Ontario to United Kingdom (average of C$ 98). Flying from Region of Ontario to United Kingdom in December is currently the most expensive (average of C$ 710). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ontario to United Kingdom

See prices for flight routes from nearby airports that may be better suited for you.
Pierre Elliott Trudeau Intl to Charles de Gaulle flights
Pearson Intl to Heathrow flights
Vancouver Intl to Heathrow flights
Pearson Intl to Istanbul flights
Pearson Intl to Lisbon flights
Pearson Intl to Gatwick flights
Pearson Intl to Charles de Gaulle flights
Pierre Elliott Trudeau Intl to Orly flights
Vancouver Intl to Charles de Gaulle flights
Pearson Intl to London City flights
Pierre Elliott Trudeau Intl to Lisbon flights
Pierre Elliott Trudeau Intl to Istanbul flights
Pierre Elliott Trudeau Intl to Heathrow flights
Pearson Intl to Leonardo da Vinci/Fiumicino flights
Toronto Island to Heathrow flights
Vancouver Intl to Istanbul flights
Vancouver Intl to Frankfurt flights
Vancouver Intl to Gatwick flights
Pearson Intl to Amsterdam flights
Pearson Intl to Dublin flights
Pierre Elliott Trudeau Intl to Málaga flights
Pierre Elliott Trudeau Intl to Leonardo da Vinci/Fiumicino flights
Pearson Intl to Stansted flights
Pierre Elliott Trudeau Intl to Barcelona-El Prat flights
Pearson Intl to Orly flights
Pearson Intl to Luton flights
Pearson Intl to Frankfurt flights
Pearson Intl to Sabiha Gokcen flights
Pierre Elliott Trudeau Intl to Lyon flights
Vancouver Intl to London City flights
Toronto Island to Lisbon flights
Pierre Elliott Trudeau Intl to Frankfurt flights
Pierre Elliott Trudeau Intl to Madrid flights
Calgary to Heathrow flights
Pierre Elliott Trudeau Intl to Beauvais-Tille flights
Pierre Elliott Trudeau Intl to Bruxelles-National flights
Vancouver Intl to Leonardo da Vinci/Fiumicino flights
Abbotsford to Heathrow flights
Toronto Island to Charles de Gaulle flights
Pierre Elliott Trudeau Intl to Gatwick flights
Halifax to Heathrow flights
Pierre Elliott Trudeau Intl to Geneva flights
Vancouver Intl to Dublin flights
Pearson Intl to Barcelona-El Prat flights
Vancouver Intl to Madrid flights
Pearson Intl to Frederic Chopin flights
Québec City to Charles de Gaulle flights
Pierre Elliott Trudeau Intl to Malpensa flights
Pierre Elliott Trudeau Intl to Toulouse flights
Pierre Elliott Trudeau Intl to Sabiha Gokcen flights

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 29 October 2025.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapestC$ 222AverageC$ 805FlexibilityNo cancel feeOn-time60%
Search WestJet flights
LufthansaCheapestC$ 433AverageC$ 1,086FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
PLAYCheapestC$ 457AverageC$ 671FlexibilityNo cancel feeOn-timeN/A
Search PLAY flights
WestJet EncoreCheapestC$ 558AverageC$ 711FlexibilityNo cancel feeOn-timeN/A
Search WestJet Encore flights
Air TransatCheapestC$ 584AverageC$ 1,009FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
TAP AIR PORTUGALCheapestC$ 608AverageC$ 793FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Air CanadaCheapestC$ 632AverageC$ 1,127FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Porter AirlinesCheapestC$ 636AverageC$ 992FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
IcelandairCheapestC$ 649AverageC$ 909FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
DeltaCheapestC$ 683AverageC$ 948FlexibilityNo cancel feeOn-timeN/A
Search Delta 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

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.