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Cheap flights from Ontario (ONT) to Heathrow (LHR)

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The best prices from Ontario to Heathrow are usually found in February or April, booked 50 days in advance, depart on a Tuesday or Sunday and return on a Tuesday

How to find the cheapest flight from
Ontario (ONT) to Heathrow (LHR)

ONT - LHR
Price
$384 - $595
LHR
Temperature
46.4 - 75.2 °F
LHR
Rainfall
1.5 - 2.6 inches

Popular in

June

High demand for flights, 22% potential price rise

Cheapest in

February

Best time to find cheap flights, 18% potential price drop

Average price

$389

Average for round-trip flights in January 2021

Round-trip from

$384

From Ontario to Heathrow

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest day to fly round-trip from Ontario to Heathrow?

Travelers have found that booking a Monday departure is the best way to save up to 30% on the cost of booking your flights compared to booking on days of the week where this route is of high demand.

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

Find a great deal and save up to 44% by booking at least 61 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Ontario to Heathrow within the next two weeks, with the cheapest ticket starting at $910.

What is the cheapest month to fly from Ontario to Heathrow?

October can be a great time to fly to Heathrow from Ontario with a flight ticket averaging about $714. Cheapflights users have found deals in the month of October for as cheap as $445. The most expensive prices can be found in the month of July.

When is the cheapest time to fly from Ontario to Heathrow (ONT - LHR)?

A simple way to save on the total cost of your ticket is to fly from Ontario to Heathrow in the evening. If you’re flexible enough to do this you can expect to save up to 26% on your trip compared to booking a flight in the afternoon.

Cheap flights from Ontario to Heathrow in January, February 2021

The best prices found for ONT to LHR flights for January, February
25 Jan - 12 Feb
$642pp
ONT
Ontario
American Airlines
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
American Airlines
 
1 STOP
ONT
Ontario
21 Feb - 27 Feb
$643pp
ONT
Ontario
American Airlines
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
American Airlines
 
1 STOP
ONT
Ontario
23 Feb - 26 Feb
$646pp
ONT
Ontario
American Airlines
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
American Airlines
   
2 STOPS
ONT
Ontario

Ontario to Heathrow 2021 flight deals

Cheap flights to Heathrow from Ontario found for this year
6 Sep - 24 Sep
$626pp
ONT
Ontario
Air Canada
   
2 STOPS
LHR
London Heathrow
LHR
London Heathrow
Air Canada
   
2 STOPS
ONT
Ontario
13 Oct - 23 Nov
$635pp
ONT
Ontario
United Airlines
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
United Airlines
   
2 STOPS
ONT
Ontario
13 Oct - 23 Nov
$636pp
ONT
Ontario
Multiple Airlines
   
2 STOPS
LHR
London Heathrow
LHR
London Heathrow
Multiple Airlines
   
2 STOPS
ONT
Ontario

Last minute flights from Ontario to Heathrow

Late deals on round-trip flights to Heathrow from Ontario, departing today and this week
22 Jan - 24 Jan
$643pp
ONT
Ontario
British Airways
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
British Airways
 
1 STOP
ONT
Ontario
22 Jan - 24 Jan
$907pp
ONT
Ontario
Multiple Airlines
   
2 STOPS
LHR
London Heathrow
LHR
London Heathrow
British Airways
 
1 STOP
ONT
Ontario
22 Jan - 24 Jan
$964pp
ONT
Ontario
Multiple Airlines
   
2 STOPS
LHR
London Heathrow
LHR
London Heathrow
Multiple Airlines
     
3 STOPS
ONT
Ontario

One-way flights to Heathrow from Ontario

The cheapest one-way flights from Ontario to Heathrow
7:53 am - 6:05 am
Delta
1 Stop
14h 12m
ONT - LHR
Delta
$842
Delta
3:30 am - 6:05 am
British Airways
1 Stop
18h 35m
ONT - LHR
British Airways
1:10 am - 6:20 am
Air Canada
2 Stops
21h 10m
ONT - LHR
Air Canada

Related info for your journey

Useful info, stats and facts about Ontario to Heathrow flights.

Flight FAQs

From Ontario to Heathrow

Are flight prices decreasing from Ontario to Heathrow due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Ontario and Heathrow for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

What safety measures are being taken by airlines flying from Ontario to London Heathrow to control the spread of COVID-19?

Airlines globally have implemented additional safety measures to accommodate you. Delta is one of them. Airline carriers are regularly disinfecting and sanitizing their aircraft. Masks are provided and are mandatory while on board. Pre-flight testing for symptoms and antibodies, alongside socially distanced seating (for a limited time) will work towards keeping travelers safer while flying from Ontario to London Heathrow. Policies will vary by airline.

Which airlines flying from Ontario to London Heathrow have flexible cancellations due to COVID-19?

American Airlines, British Airways, and United Airlines are some of the carriers that may have flexible cancellation policies. You can use our site to filter for other airlines that may also have this kind of flexibility.

Can I find flights from Ontario to Heathrow for under $700 on Cheapflights?

Yes, there are multiple flights from Ontario to Heathrow for under $700. The cheapest flight booked recently is on KLM for just $638, but on average you can expect to pay $653.

Are there nonstop flights from Ontario to Heathrow for under $600 on Cheapflights?

There are no nonstop flights from Ontario to Heathrow, but Cheapflights can provide you with all the information you need to find the fastest route with the fewest stops.

Are there last-minute flights available from Ontario to Heathrow for under $700?

There are currently 4+ open flights from Ontario to Heathrow within the next 7 days for less than $700.

What days are nonstop flights available from Ontario to Heathrow?

You can find nonstop flights on the following days: Friday.

Does it rain more in Ontario or Heathrow?

Ontario will have less rainfall in 2 compared to Heathrow over the next 8 days.

Is Ontario weather warmer or cooler than Heathrow?

Expect the weather to be around 95 °F on average in July. As the temperature peaks, try to get your plans done early, as flight price and availability will have an impact on your travels. The climate in Heathrow is generally colder than in Ontario.

How long is the flight from Ontario to Heathrow?

There are many flights that can get you from Ontario to Heathrow in 12h 25m. Fly via American Airlines, British Airways, or KLM to get the fastest option. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

What are the cheapest airlines flying from Ontario to Heathrow round-trip?

Our cheapest airline available from Ontario to Heathrow is KLM. Our recent data shows that you can find tickets from as low as $638 on this airline. Additional options worth looking into are American Airlines and British Airways, starting at $642 and $645 round-trip.

What are the cheapest airlines to fly from Ontario to Heathrow one-way?

$398 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on British Airways and Air Canada, with prices starting from $413 and $2,321, respectively.

Alternative routes for Ontario to Heathrow

Destination information for Heathrow

Things to know before you go. Useful info for your trip from Ontario to Heathrow
Today's exchange rate
$1 = £0.74
Average temperature for January in Heathrow
48.2 °F
Avg rainfall for January in Heathrow
2.1 ″

Airports servicing Ontario

Airports servicing London

Top 5 airlines flying from Ontario to Heathrow

The chart below displays the airlines Cheapflights users traveling from Ontario to Heathrow choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.

Airline Cheapest Average Flexibility On-time COVID-19 safety
Air France
$453 $614 No cancel fee 77%
British Airways
$383 $624 No cancel fee 70%
Delta
$374 $631 No cancel fee N/A
American Airlines
$366 $645 No cancel fee 71%
United Airlines
$379 $654 No cancel fee 69%