Find flights
When to book
FAQs

Cheap flights from Ontario to England from £239

ONT — LHR
31 Oct — 7 Nov1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Ontario to England

Enter your travel dates to find the best prices.

Cheapest flights from Ontario to England

Wed 4/1106:30 -
2 stops29h 00m
Mon 9/1112:15 -
2 stops19h 36m
Deal found 30/9£602
Tue 10/1106:25 -
2 stops20h 25m
Tue 17/1112:15 -
2 stops19h 36m
Deal found 26/9£603
Wed 4/1106:25 -
2 stops29h 05m
Wed 11/1112:15 -
2 stops19h 36m
Deal found 26/9£604
Wed 11/1106:25 -
2 stops20h 25m
Mon 16/1120:35 -
2 stops35h 16m
Deal found 27/9£605
Sat 14/1106:25 -
2 stops29h 05m
Sat 21/1112:15 -
2 stops19h 59m
Deal found 30/9£611
Wed 11/1106:25 -
2 stops20h 25m
Tue 17/1112:15 -
2 stops19h 36m
Deal found 28/9£612
Mon 9/1106:25 -
2 stops29h 05m
Fri 13/1112:15 -
2 stops19h 36m
Deal found 30/9£624
Mon 26/1006:15 -
2 stops21h 35m
Mon 2/1120:35 -
2 stops35h 16m
Deal found 29/9£633
Mon 9/1106:30 -
2 stops20h 20m
Wed 18/1112:15 -
2 stops19h 36m
Deal found 30/9£639
Wed 11/1106:25 -
2 stops20h 25m
Wed 18/1112:15 -
2 stops19h 36m
Deal found 27/9£641

Find flight deals from Ontario to England

Round-trip from

£567

One-way from

£239

Popular in

June

Cheapest in

February

Average price

£600
United Airlines
  • United Airlines
  • 2/3-5/3
  • 3 total stops
  • 48h 44m total
  • Ontario to England
Search Deals
JetBlue
  • JetBlue
  • 17/10-31/12
  • 1 total stop
  • 14h 03m total
  • Ontario to England
Search Deals
Highest demand for flights based on searches. 17% potential increase in price (£104 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£15 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 2026
Search Deals

Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Ontario to England that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

OntarioLondon

ONT Ontario - LHR London Heathrow

ONTLHR

Ontario

Fri 9/10

23:05-20:45

1 stop13h 40m

London Heathrow

Wed 31/12

00:00-15:00

Nonstop0h 00m

£333

OntarioLondon

ONT Ontario - LHR London Heathrow

ONTLHR

Ontario

Sun 1/11

06:00-10:15

1 stop20h 15m

London Heathrow

Wed 31/12

00:00-15:00

Nonstop0h 00m

£349

OntarioLondon

ONT Ontario - LHR London Heathrow

ONTLHR

Ontario

Sat 31/10

12:16-07:50

1 stop36h 34m

London Heathrow

Wed 31/12

00:00-15:00

Nonstop0h 00m

£360
Fastest return journey

OntarioLondon

ONT Ontario - LHR London Heathrow

ONTLHR

Ontario

Thu 11/2

16:59-13:35

1 stop12h 36m

London Heathrow

Wed 31/12

00:00-15:00

Nonstop0h 00m

£376

OntarioLondon

ONT Ontario - LHR London Heathrow

ONTLHR

Ontario

Sun 29/11

06:00-07:25

1 stop17h 25m

London Heathrow

Wed 31/12

00:00-15:00

Nonstop0h 00m

£504

OntarioLondon

ONT Ontario - LHR London Heathrow

ONTLHR

Ontario

Wed 2/12

05:45-07:40

1 stop17h 55m

London Heathrow

Wed 31/12

00:00-15:00

Nonstop0h 00m

£504

OntarioLondon

ONT Ontario - LHR London Heathrow

ONTLHR

Ontario

Sat 17/10

22:42-12:10

2 stops29h 28m

London Heathrow

Wed 31/12

00:00-15:00

Nonstop0h 00m

£510

OntarioLondon

ONT Ontario - LHR London Heathrow

ONTLHR

Ontario

Wed 2/12

10:05-10:50

2 stops16h 45m

London Heathrow

Wed 31/12

00:00-15:00

Nonstop0h 00m

£540

OntarioLondon

ONT Ontario - LHR London Heathrow

ONTLHR

Ontario

Tue 20/10

10:25-11:55

2 stops17h 30m

London Heathrow

Wed 31/12

00:00-15:00

Nonstop0h 00m

£542

OntarioLondon

ONT Ontario - LHR London Heathrow

ONTLHR

Ontario

Sun 15/11

14:45-21:05

2 stops22h 20m

London Heathrow

Wed 31/12

00:00-15:00

Nonstop0h 00m

£605

Flights are sorted by cheapest return flights first.

Deals found on 29/9

Showing 1-10 of 24 resultsSorted by cheapest first
1
2
3

Best time to book a flight from Ontario to England

Have a flexible travel schedule? Discover the best time to fly to England from Ontario with our price prediction graph.
Estimated return price

Cheapflights Insights

Everything you need to know about your flight from Ontario to England

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

Currently, January is the cheapest month in which you can book a flight from Ontario to England (average of £519). Flying from Ontario to England in July is currently the most expensive (average of £1,000). 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.

How much does it cost for a return flight from Ontario to England?

Airfare is below average for this route at the moment.
Ontario to England flights typically cost between £642 and £716 in March.
The cheapest return price found within the last 5 days was £567 on United Airlines (2 Mar–5 Mar).

Related info for your journey

  • What airport do you fly from for flights from Ontario to England?

    Located just 3.1 mi from the city center, Ontario (ONT) is the airport most travelers will use when flying to England from Ontario.

  • How long is the flight from Ontario to England?

    Alaska Airlines can get you from Ontario to England in just under 15h 07m. Your travel time can differ by up to . Ontario and England are separated by a distance of 5407 mi.

  • What are the most popular routes from Ontario to England?

    While some choose either Ontario - London Gatwick or Ontario - Edinburgh Turnhouse, Ontario - London Heathrow is the most popular route from Ontario to England.

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

    Yes. In addition to deals on Ontario to England flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Ontario to England?

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

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

    Yes. Cheapflights offers flight deals from Ontario to England 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 England?

    Currently, January is the cheapest month in which you can book a flight from Ontario to England (average of £519). Flying from Ontario to England in July is currently the most expensive (average of £1,000). 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

Fly with Cheapflights

How does Cheapflights help users find flights from Ontario to England?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Ontario to England. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Ontario to England?

Cheapflights simply makes it quick and affordable to book flights from Ontario to England 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 Ontario to England with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Ontario to England flexibly with Cheapflights today.

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

Of course! You can now track prices for flights from Ontario to England and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price 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.