Cheap flights from Ontario (ONT) to London (LON)

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The best prices from Ontario to London are usually found in August or January, booked 53 days in advance, depart on a Tuesday or Sunday and return on a Sunday

How to find the cheapest flight from
Ontario (ONT) to London (LON)

All the information you need to plan the best ONT to LON flight in 2021: compare Ontario to London flight prices with the expected peak season, weather and rainfall in London.
ONT - LON
Price
$407 - $700
LON
Temperature
39.2 - 62.6 °F
LON
Precipitation
1.6 - 2.8 inches

Popular in

June

High demand for flights, 27% potential price rise

Cheapest in

August

Best time to find cheap flights, 21% potential price drop

Average price

$500

Average for round-trip flights in October 2021

Round-trip from

$407

From Ontario to London (LON)

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 London?

Thursday flights are found to be more expensive to fly from Ontario to London. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to London.

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

Our data shows that February tends to be the cheapest month to fly to London from Ontario. Users have commonly found prices around $482 for the month, but tickets can be as low as $345. Due to multiple factors, prepare for potentially higher prices in December.

When is the cheapest time to fly from Ontario to London (ONT - LON)?

It’s optimal to fly from Ontario to London in the evening. By choosing this option you can save up to 14% on the cost of your flight, compared to a flight at noon.

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

To save on the cost of your flight from Ontario to London, book at least 38 days before your planned departure. Booking around this time can save you about 86% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $663 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $920.

Cheap flights from Ontario to London in October, November 2021

The best prices found for ONT to LON flights for October, November
30 Nov - 7 Dec
$590pp
ONT
Ontario
United Airlines
   
2 STOPS
LHR
London Heathrow
LHR
London Heathrow
United Airlines
   
2 STOPS
ONT
Ontario
27 Oct - 3 Nov
$592pp
ONT
Ontario
British Airways
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
British Airways
 
1 STOP
ONT
Ontario
10 Nov - 24 Nov
$593pp
ONT
Ontario
British Airways
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
British Airways
 
1 STOP
ONT
Ontario

Ontario to London 2021 flight deals

Cheap flights to London from Ontario found for this year
30 Nov - 7 Dec
$590pp
ONT
Ontario
United Airlines
   
2 STOPS
LHR
London Heathrow
LHR
London Heathrow
United Airlines
   
2 STOPS
ONT
Ontario
27 Dec - 13 Jan
$591pp
ONT
Ontario
United Airlines
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
United Airlines
 
1 STOP
ONT
Ontario
27 Oct - 3 Nov
$592pp
ONT
Ontario
British Airways
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
British Airways
 
1 STOP
ONT
Ontario

Last minute flights from Ontario to London

Late deals on round-trip flights to London from Ontario, departing today and this week
27 Oct - 3 Nov
$592pp
ONT
Ontario
British Airways
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
British Airways
 
1 STOP
ONT
Ontario
27 Oct - 3 Nov
$594pp
ONT
Ontario
British Airways
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
British Airways
   
2 STOPS
ONT
Ontario
27 Oct - 3 Nov
$595pp
ONT
Ontario
American Airlines
   
2 STOPS
LHR
London Heathrow
LHR
London Heathrow
American Airlines
   
2 STOPS
ONT
Ontario

One-way flights to London from Ontario

The cheapest one-way flights from Ontario to London
6:00 am - 2:50 am
Finnair
1 Stop
12h 50m
ONT - LHR
Finnair
$489
World Air Fares
2:05 am - 2:30 am
Virgin Atlantic
1 Stop
16h 25m
ONT - LHR
Virgin Atlantic
$492
Bravofly
3:20 pm - 5:25 am
United Airlines
1 Stop
30h 05m
ONT - LHR
United Airlines
$517
United

Related info for your journey

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

Flight FAQs

From Ontario to London

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

Most people fly from Ontario (ONT) if they book a flight from Ontario to London. On average, Ontario has 0 outbound flights to London per day from 7 airlines. Ontario is conveniently located just 3.1 mi from Ontario’s city center.

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

Due to the rapidly changing circumstances due to COVID-19, airlines like American Airlines, British Airways, and United Airlines flying from Ontario to London have implemented new flexible cancellation policies.

Can I find flights from Ontario to London for under $600 on Cheapflights?

Yes, there are multiple flights from Ontario to London for under $600. The cheapest flight booked recently is on American Airlines for just $577, but on average you can expect to pay $588.

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

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

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

Flying on American Airlines is currently your cheapest option to London, with prices starting at $577. Additional round-trip tickets that might be worth considering are offered by British Airways and Delta, with the lowest prices starting at $579 and $584, respectively.

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

The cheapest airlines for a one-way flight from Ontario to London are Finnair ($489), Air Canada ($490), and Qatar Airways ($491).

What are the most popular routes from Ontario to London?

The most popular flight routes from Ontario to London are Ontario - London Heathrow, Ontario - London Gatwick and Ontario - London City.

What are the cheapest flights from Ontario to London?

Looking at all options, your cheapest flight can be booked for $366. While the most popular route (Ontario - London Heathrow) can be booked for $579 on average our data indicates $968 when flying from Ontario to London

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

Before booking your flight from Ontario to London check out the most popular airlines for this route: American Airlines, Air Canada or Air France.

COVID Restrictions

View COVID Travel Restrictions for London, England

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

Information is based on travel restrictions from Ontario to London

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

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.

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

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 London?

Returning to Ontario from London

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

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

Hide COVID Travel Restrictions for London, England

Alternative routes for Ontario to London

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

Destination information for London

Things to know before you go - useful duration and weather info for your trip from Ontario to London.
Today's exchange rate
$1 = £0.73
Average temperature for October in London
60.8 °F
Avg rainfall for October in London
2.8 ″

Airports servicing Ontario

Airports servicing London

Gatwick (LGW)
Stansted (STN)
London City (LCY)
Luton (LTN)
Southend (SEN)

Top 5 airlines flying from Ontario to London

The chart below displays the airlines Cheapflights users traveling from Ontario to London 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
British Airways
$350 $680 No cancel fee 70%
American Airlines
$366 $645 No cancel fee 71%
Delta
$374 $631 No cancel fee N/A
United Airlines
$379 $654 No cancel fee 69%
Air France
$453 $614 No cancel fee 77%
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