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

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

All the information you need to plan the best ONT to LHR flight in 2021: compare Ontario to Heathrow flight prices with the expected peak season, weather and rainfall in Heathrow.
ONT - LHR
Price
$384 - $595
LHR
Temperature
39.2 - 62.6 °F
LHR
Precipitation
1.6 - 2.8 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

$561

Average for round-trip flights in October 2021

Round-trip from

$384

From Ontario to London Heathrow

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
How far in advance should I book a flight from Ontario to London Heathrow Airport?

Find a great deal and save up to 86% by booking at least 38 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 London Heathrow Airport within the next two weeks, with the cheapest ticket starting at $663.

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ontario to London Heathrow Airport as you normally would.

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

Due to multiple factors, expect to potentially pay more when booking in December. For low rates, February can be a great choice for travel to London Heathrow Airport. Flights to London Heathrow Airport from Ontario in February are about $482 on average during February, but can be found for as low as $345.

Cheap flights from Ontario to Heathrow in October, November 2021

The best prices found for ONT to LHR flights for October, November
2 Nov - 25 Jan
$585pp
ONT
Ontario
American Airlines
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
American Airlines
 
1 STOP
ONT
Ontario
3 Nov - 11 Jan
$591pp
ONT
Ontario
American Airlines
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
American Airlines
 
1 STOP
ONT
Ontario
10 Nov - 11 Jan
$593pp
ONT
Ontario
British Airways
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
British Airways
 
1 STOP
ONT
Ontario

Ontario to Heathrow 2021 flight deals

Cheap flights to Heathrow from Ontario found for this year
8 Dec - 20 Jan
$579pp
ONT
Ontario
British Airways
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
British Airways
   
2 STOPS
ONT
Ontario
11 Dec - 11 Jan
$585pp
ONT
Ontario
United Airlines
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
United Airlines
 
1 STOP
ONT
Ontario
12 Dec - 12 Jan
$590pp
ONT
Ontario
American Airlines
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
American Airlines
 
1 STOP
ONT
Ontario

Last minute flights from Ontario to Heathrow

Late deals on round-trip flights to Heathrow from Ontario, departing today and this week
27 Oct - 2 Nov
$597pp
ONT
Ontario
KLM
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
KLM
   
2 STOPS
ONT
Ontario
27 Oct - 3 Nov
$598pp
ONT
Ontario
KLM
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
KLM
   
2 STOPS
ONT
Ontario
31 Oct - 9 Nov
$602pp
ONT
Ontario
British Airways
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
British Airways
 
1 STOP
ONT
Ontario

One-way flights to Heathrow from Ontario

The cheapest one-way flights from Ontario to Heathrow
4:25 am - 2:25 am
Finnair
1 Stop
14h 00m
ONT - LHR
Finnair
$490
World Air Fares
12:45 am - 3:30 am
Multiple Airlines
2 Stops
18h 45m
ONT - LHR
Multiple Airlines
$533
Air Canada
2:05 am - 2:30 am
KLM
1 Stop
16h 25m
ONT - LHR
KLM
$537
KLM

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Ontario</span> to <span class="emphasized">Heathrow</span> flights.

Flight FAQs

From Ontario to Heathrow

What airport do you fly from for flights from Ontario to London Heathrow?

If you book a flight to London Heathrow from Ontario, you will be flying from Ontario, which is the city’s only airport. Ontario (ONT) is located 3.1 mi from the center of Ontario. There are 0 flights from Ontario to London Heathrow per day from 7 different airlines.

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 London Heathrow Airport for under $600 on Cheapflights?

Yes, there are multiple flights from Ontario to London Heathrow Airport for under $600. The cheapest flight booked recently is on British Airways for just $579, but on average you can expect to pay $597.

Are there last-minute flights available from Ontario to London Heathrow Airport for under $600?

There are currently 20+ open flights from Ontario to London Heathrow Airport within the next 7 days for less than $600.

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

According to our current data, British Airways ($579), United Airlines ($585), and American Airlines ($590) offers the cheapest pricing from Ontario to London Heathrow Airport.

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

To fly one-way, consider booking your trip with Qatar Airways, which is currently one of the cheapest options available, starting at $442. KLM flights start at $483 while deals on Finnair start at $487 one-way.

What are the cheapest flights from Ontario to London Heathrow Airport?

On average you can expect to pay $968 for a flight from Ontario to London Heathrow Airport. The cheapest flight overall is $366 while the most popular route, (Ontario - London Heathrow) is currently priced at $592.

What are the most popular airlines that fly from Ontario to London Heathrow Airport?

When booking a flight from Ontario to London Heathrow Airport, you may want to consider flying on American Airlines, Air Canada or Air France as they are the most popular for this route.

Related searches

Flights to Heathrow from Ontario (ONT)
Flights to Ontario Flights to Heathrow Flights from Ontario

Rent a Car

Car Rentals at Heathrow Car Rentals in England

COVID Restrictions

View COVID Travel Restrictions for Heathrow (LHR)

Do I need a COVID test to fly to Heathrow from Ontario?

Information is based on travel restrictions from Ontario to London Heathrow

Most visitors from Ontario need to provide a negative COVID-19 test result and/or quarantine to enter London Heathrow.

COVID-19 testing requirements
Visitors from Ontario must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to London Heathrow.

Quarantine requirements
Visitors from Ontario are not required to quarantine after entering London Heathrow.

Documents
Mandatory passenger locator form - Submit the form any time in the 48 hours before arriving in the UK. Show the form when checking in your plane, train or ferry to the UK.

Managed quarantine package for Scotland - All travelers arriving directly to Scotland are required to book their Managed Quarantine Package prior to travel.

COVID-19 testing package - All travelers must book and pay for a COVID-19 Testing Package prior to travel to England and Scotland.


Do I need a test to fly back to Ontario from Heathrow?

Returning to Ontario from London Heathrow

COVID-19 testing requirements
Visitors from London Heathrow must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Ontario.

Quarantine requirements
Visitors from London Heathrow are not required to quarantine after entering Ontario.

Hide COVID Travel Restrictions for Heathrow (LHR)

Alternative routes for Ontario to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.

Destination information for Heathrow

Things to know before you go - useful duration and weather info for your trip from Ontario to Heathrow.
Today's exchange rate
$1 = £0.73
Average temperature for October in Heathrow
60.8 °F
Avg rainfall for October in Heathrow
2.6 ″

Airports servicing Ontario

Airports servicing London

Top 5 airlines flying from Ontario to London 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
American Airlines
$366 $645 No cancel fee 71%
Delta
$374 $631 No cancel fee N/A
United Airlines
$379 $654 No cancel fee 69%
British Airways
$383 $624 No cancel fee 70%
Air France
$453 $614 No cancel fee 77%