What is the cheapest airline that flies from London Heathrow to Ontario?

British Airways and United Airlines are the most popular carriers operating from London Heathrow to Ontario

When did momondo last update prices for flights from London Heathrow Airport to Ontario Airport?

Prices for flights from London Heathrow Airport to Ontario Airport are refreshed on a daily basis.

How old do you have to be to fly from London Heathrow Airport to Ontario Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London Heathrow Airport to Ontario Airport.

What documentation or ID do you need to fly to Ontario Airport?

The necessary travel and health documents for your Ontario Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

€405 Cheap Flights from London Heathrow Airport to Ontario in 2026

Q: What is the typical price of a round-trip flight between London Heathrow Airport and Ontario?

Prices are currently low for flights on this route. Typical prices usually range from €600 to €495. The lowest price recently found on this route was €519.

1 adult

0 bags

Voted the Winner of Europe's Best Travel App 2023

Save money when you book flights with momondo

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from London Heathrow Airport to Los Angeles

Round-trip

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

11:25 - 20:42

LHR

ONT

17h 17m

1 stop

13:18 - 09:40

ONT

LHR

12h 22m

1 stop

€519United Airlines

mar., 30 jun. - mié., 5 ago.

14:50 - 20:36

LHR

ONT

13h 46m

1 stop

13:34 - 12:25

ONT

LHR

14h 51m

1 stop

€520United Airlines

lun., 13 abr. - lun., 27 abr.

14:50 - 20:36

LHR

ONT

13h 46m

1 stop

13:34 - 12:25

ONT

LHR

14h 51m

1 stop

€521United Airlines

lun., 13 abr. - lun., 27 abr.

06:55 - 22:59

LHR

ONT

24h 04m

2 stops

13:30 - 11:10

ONT

LHR

13h 40m

1 stop

€526United Airlines

jue., 7 may. - jue., 14 may.

07:25 - 17:47

LHR

ONT

18h 22m

2 stops

06:00 - 14:10

ONT

LHR

24h 10m

1 stop

€527United Airlines

vie., 17 abr. - vie., 24 abr.

09:15 - 23:46

LHR

ONT

22h 31m

2 stops

23:59 - 14:25

ONT

LHR

30h 26m

1 stop

€543British Airways

lun., 27 abr. - sáb., 9 may.

10:25 - 21:55

LHR

ONT

19h 30m

2 stops

05:00 - 05:55

ONT

LHR

16h 55m

2 stops

€554United Airlines

vie., 3 jul. - mar., 14 jul.

11:25 - 20:36

LHR

ONT

17h 11m

1 stop

13:34 - 12:35

ONT

LHR

15h 01m

1 stop

€554United Airlines

lun., 13 abr. - dom., 26 abr.

14:50 - 20:36

LHR

ONT

13h 46m

1 stop

05:10 - 09:40

ONT

LHR

20h 30m

1 stop

€555United Airlines

sáb., 11 abr. - lun., 27 abr.

11:25 - 20:36

LHR

ONT

17h 11m

1 stop

13:34 - 12:35

ONT

LHR

15h 01m

1 stop

€556United Airlines

lun., 13 abr. - dom., 26 abr.

British Airways flights from London Heathrow Airport to Ontario

Our best British Airways deals on London Heathrow Airport to Ontario flight tickets

British Airways

27 Apr

LHR09:15London Heathrow

22h 31m

2 stops

ONT23:46Ontario

9 May

ONT23:59Ontario

30h 26m

1 stop

LHR14:25London Heathrow

€543

British Airways

8 Apr

LHR10:05London Heathrow

14h 17m

1 stop

ONT16:22Ontario

20 Apr

ONT12:19Ontario

14h 31m

1 stop

LHR10:50London Heathrow

€559

British Airways

18 Apr

LHR10:50London Heathrow

20h 56m

2 stops

ONT23:46Ontario

28 Apr

ONT10:59Ontario

13h 06m

1 stop

LHR08:05London Heathrow

€569

Delta flights from London Heathrow Airport to Ontario

Our best Delta deals on London Heathrow Airport to Ontario flight tickets

Delta

21 May

LHR10:55London Heathrow

13h 22m

1 stop

ONT16:17Ontario

6 Jun

ONT17:45Ontario

13h 50m

1 stop

LHR15:35London Heathrow

€567

Delta

23 May

LHR10:55London Heathrow

13h 22m

1 stop

ONT16:17Ontario

1 Jun

ONT17:50Ontario

13h 45m

1 stop

LHR15:35London Heathrow

€572

Delta

27 Apr

LHR09:55London Heathrow

20h 42m

2 stops

ONT22:37Ontario

9 May

ONT13:29Ontario

15h 36m

2 stops

LHR13:05London Heathrow

€573

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonOntario

LHR - ONT

LHRONT

London Heathrow

mar. 30/6

11:25-20:42

1 stop17h 17m

Ontario

mié. 5/8

13:18-09:40

1 stop12h 22m

€519

Fastest return journey

LondonOntario

LHR - ONT

LHRONT

London Heathrow

lun. 13/4

14:50-20:36

1 stop13h 46m

Ontario

lun. 27/4

13:34-12:25

1 stop14h 51m

€520

LondonOntario

LHR - ONT

LHRONT

London Heathrow

lun. 13/4

14:50-20:36

1 stop13h 46m

Ontario

lun. 27/4

13:34-12:25

1 stop14h 51m

€521

LondonOntario

LHR - ONT

LHRONT

London Heathrow

jue. 7/5

06:55-22:59

2 stops24h 04m

Ontario

jue. 14/5

13:30-11:10

1 stop13h 40m

€526

LondonOntario

LHR - ONT

LHRONT

London Heathrow

vie. 17/4

07:25-17:47

2 stops18h 22m

Ontario

vie. 24/4

06:00-14:10

1 stop24h 10m

€527

LondonOntario

LHR - ONT

LHRONT

London Heathrow

lun. 27/4

09:15-23:46

2 stops22h 31m

Ontario

sáb. 9/5

23:59-14:25

1 stop30h 26m

€543

LondonOntario

LHR - ONT

LHRONT

London Heathrow

vie. 3/7

10:25-21:55

2 stops19h 30m

Ontario

mar. 14/7

05:00-05:55

2 stops16h 55m

€554

LondonOntario

LHR - ONT

LHRONT

London Heathrow

lun. 13/4

11:25-20:36

1 stop17h 11m

Ontario

dom. 26/4

13:34-12:35

1 stop15h 01m

€554

LondonOntario

LHR - ONT

LHRONT

London Heathrow

sáb. 11/4

14:50-20:36

1 stop13h 46m

Ontario

lun. 27/4

05:10-09:40

1 stop20h 30m

€555

LondonOntario

LHR - ONT

LHRONT

London Heathrow

lun. 13/4

11:25-20:36

1 stop17h 11m

Ontario

dom. 26/4

13:34-12:35

1 stop15h 01m

€556

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from London Heathrow Airport to Ontario

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the typical price of a round-trip flight between London Heathrow Airport and Ontario?

What is the cheapest month to fly to Ontario?

If you don’t want to visit Ontario in February, then you should wait until January to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of €480.

How far in advance should I book a flight to Ontario?

You are more likely to see cheaper flights to Ontario from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Ontario for around €588 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ontario from London Heathrow Airport for as low as €430 on momondo.

When to book flights from London Heathrow Airport to Ontario

Are you open to changing your travel dates? Check out the ideal times to fly from London Heathrow Airport to Ontario according to our flight data. Find out which month and days have the cheapest flights.

Estimated return price

Cheap London Heathrow Airport to Ontario (LHR to ONT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Ontario

Fastest flight time	14h 17m
Direct flights	None

The fastest flight from London Heathrow Airport to Ontario takes 14h 17m

There are no direct flights from London Heathrow Airport to Ontario. There are no popular flight routes from London Heathrow Airport to Ontario.

Search flight deals

How far is London Heathrow to Ontario by plane?
There are 8703.4 km between London Heathrow and Ontario. Flights usually cover this in 14h 17m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from London Heathrow Airport to Ontario Airport?
Prices for flights from London Heathrow Airport to Ontario Airport are refreshed on a daily basis.
How old do you have to be to fly from London Heathrow Airport to Ontario Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London Heathrow Airport to Ontario Airport.
What documentation or ID do you need to fly to Ontario Airport?
The necessary travel and health documents for your Ontario Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from London to Ontario?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to Ontario for you.

Can I find flights from London to Ontario with flexible booking policies on momondo?

momondo does allow users to show only those flights to Ontario from London which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from London to Ontario?

momondo helps you find the best flight between London and Ontario by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from London to Ontario right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Ontario from London. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.