Cheap flights from London to Ontario International

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Ontario (ONT)
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The best prices from London to Ontario International are usually found in February or November, booked 42 days in advance, depart on a Wednesday or Saturday and return on a Tuesday

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

LON - ONT
Price
£353 - £748

Popular in

July

High demand for flights, 35% potential price rise

Cheapest in

February

Best time to find cheap flights, 27% potential price drop

Average price

£353

Average for round-trip flights in February 2021

Round-trip from

£353

From London to Ontario International

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 return from London to Ontario International?

It’s generally more expensive to depart on a Tuesday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.

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

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 61 days in advance, which can save you up to 40% on flights from London to Ontario International compared to booking the week you need them. Waiting 61 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at £386. For sooner than that we have options available in the next 3 days from £460.

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

November is one of the best times of the year to fly to Ontario International from London. Prices for November average £369 per person but you can even find prices for as low as £255. The most expensive prices can be found in the month of July. Opting for a November flight can save you 53% on your journey compared to booking in November

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

One of the essential ways to save on airfare from London to Ontario International is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight at midday could potentially save you up to 25% on airfare.

Cheap flights from London to Ontario International in February, March 2021

11 Mar - 25 Mar
£439pp
LHR
London Heathrow
Multiple airlines
 
1 STOP
ONT
Ontario
ONT
Ontario
Virgin Atlantic
 
1 STOP
LHR
London Heathrow
11 Mar - 25 Mar
£456pp
LHR
London Heathrow
Delta
   
2 STOPS
ONT
Ontario
ONT
Ontario
Delta
 
1 STOP
LHR
London Heathrow
26 Feb - 28 Feb
£516pp
LHR
London Heathrow
Finnair
   
2 STOPS
ONT
Ontario
ONT
Ontario
Finnair
   
2 STOPS
LHR
London Heathrow

London to Ontario International 2021 flight deals

24 May - 2 Jun
£366pp
LHR
London Heathrow
Air Canada
   
2 STOPS
ONT
Ontario
ONT
Ontario
Air Canada
   
2 STOPS
LHR
London Heathrow
24 May - 2 Jun
£368pp
LHR
London Heathrow
Multiple airlines
   
2 STOPS
ONT
Ontario
ONT
Ontario
Lufthansa
 
1 STOP
LHR
London Heathrow
24 May - 2 Jun
£383pp
LHR
London Heathrow
Lufthansa
 
1 STOP
ONT
Ontario
ONT
Ontario
Lufthansa
 
1 STOP
LHR
London Heathrow

Last-minute flights from London to Ontario International

4 Mar - 18 Mar
£519pp
LHR
London Heathrow
Finnair
 
1 STOP
ONT
Ontario
ONT
Ontario
Finnair
 
1 STOP
LHR
London Heathrow
4 Mar - 18 Mar
£582pp
LHR
London Heathrow
Finnair
 
1 STOP
ONT
Ontario
ONT
Ontario
Finnair
   
2 STOPS
LHR
London Heathrow
4 Mar - 18 Mar
£591pp
LHR
London Heathrow
Finnair
   
2 STOPS
ONT
Ontario
ONT
Ontario
Finnair
   
2 STOPS
LHR
London Heathrow

One-way flights to Ontario International from London

12:35 - 13:29
Air France
2 stops
32h 54m
LHR - ONT
Air France
10:05 - 08:33
Air Canada
2 stops
30h 28m
LHR - ONT
Air Canada
07:30 - 17:24
Delta
1 stop
17h 54m
LHR - ONT
Delta
£343
Delta

Related info for your journey

Flight FAQs

From London to Ontario International

Are flight prices decreasing from London to Ontario 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 London and Ontario 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.

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

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

Can I find flights from London to Ontario International for under £426 on Cheapflights?

Yes, there are multiple flights from London to Ontario International for under £426. The cheapest flight booked recently is on Air Canada for just £366, but on average you can expect to pay £459.

Are there direct flights from London to Ontario International for under £355 on Cheapflights?

There are no direct flights from London to Ontario International, 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 London to Ontario International for under £568?

There are currently 15+ open flights from London to Ontario International within the next 7 days for less than £568.

What days are direct flights available from London to Ontario?

Days when direct flights are available for this flight are: Monday.

Is London weather warmer or cooler than Ontario?

You can imagine temperatures to be in the 35 °C range in July. The weather in Ontario is generally hotter than London's. As flight availability is subject to become more limited as peak season approaches it is ideal to book in a timely manner.

How long does is the flight from London to Ontario International?

A quick flight from London to Ontario International can take about 14h 04m. Delta provides one of the quickest options available for as low as £492. Both multi-stop and direct flights can be found to your destination and back.

What are the cheapest airlines to flying from London to Ontario International return?

Currently priced at £367, Air Canada will fly you from London to Ontario International and back. In addition to Air Canada, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Lufthansa and KLM - these airlines can fly you to your destination from £384 and £446, respectively. Air Canada is currently priced 24% below the average price you’ll pay for this route.

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

£267 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on Air France and KLM, with prices starting from £279 and £282, respectively.

Alternative routes for London to Ontario International

Destination information for Ontario International

Today's exchange rate
£1 = $1.41

Airports servicing London

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

Airports servicing Ontario

Top 5 airlines flying from London to Ontario International

Airline Cheapest Average Flexibility On-time COVID-19 safety
Finnair
£362 £563 No cancel fee 76%
Search Finnair flights
British Airways
£432 £616 No cancel fee 70%
Search British Airways flights
Virgin Atlantic
£386 £666 No cancel fee 72%
Search Virgin Atlantic flights
United Airlines
£375 £690 No cancel fee 69%
Search United Airlines flights
American Airlines
£1,108 £2,233 No cancel fee 71%
Search American Airlines flights
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