Cheap flights from London to Ontario

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Ontario (ONT)
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The best prices from London to Ontario 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 (ONT)

All the information you need to plan the best LON to ONT flight in 2021: compare London to Ontario flight prices with the expected peak season, weather and rainfall in Ontario.
LON - ONT
Price
£362 - £767

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

£488

Average for round-trip flights in April 2021

Round-trip from

£362

From London to Ontario

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?

Tuesday is generally a great day to depart. Flying on this day could help you save up to 32%.

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

Find a great deal and save up to 40% 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 London to Ontario within the next two weeks, with the cheapest ticket starting at £396.

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

Due to multiple factors, expect to potentially pay more when booking in July. For low rates, November can be a great choice for travel to Ontario. Flights to Ontario from London in November are about £378 on average during November, but can be found for as low as £261.

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

A simple way to save on the total cost of your ticket is to fly from London to Ontario at midday. If you’re flexible enough to do this you can expect to save up to 58% on your trip compared to booking a flight in the evening.

Cheap flights from London to Ontario in April, May 2021

The best prices found for LON to ONT flights in April, May
12 May - 19 May
£322pp
LHR
London Heathrow
KLM
   
2 STOPS
ONT
Ontario
ONT
Ontario
KLM
   
2 STOPS
LHR
London Heathrow
12 May - 19 May
£333pp
LHR
London Heathrow
Virgin Atlantic
 
1 STOP
ONT
Ontario
ONT
Ontario
Virgin Atlantic
 
1 STOP
LHR
London Heathrow
17 May - 16 Jun
£463pp
LHR
London Heathrow
American Airlines
 
1 STOP
ONT
Ontario
ONT
Ontario
American Airlines
 
1 STOP
LHR
London Heathrow

London to Ontario 2021 flight deals

Cheap flights to Ontario from London found for this year
18 Jun - 14 Jul
£322pp
LHR
London Heathrow
KLM
   
2 STOPS
ONT
Ontario
ONT
Ontario
KLM
 
1 STOP
LHR
London Heathrow
18 Jun - 11 Jul
£331pp
LHR
London Heathrow
Multiple airlines
   
2 STOPS
ONT
Ontario
ONT
Ontario
KLM
 
1 STOP
LHR
London Heathrow
12 May - 19 May
£333pp
LHR
London Heathrow
Virgin Atlantic
 
1 STOP
ONT
Ontario
ONT
Ontario
Virgin Atlantic
 
1 STOP
LHR
London Heathrow

Last-minute flights from London to Ontario

Late deals on return flights to Ontario from London, departing today and this week
23 Apr - 7 May
£677pp
LHR
London Heathrow
KLM
   
2 STOPS
ONT
Ontario
ONT
Ontario
KLM
 
1 STOP
LHR
London Heathrow
23 Apr - 7 May
£677pp
LHR
London Heathrow
KLM
   
2 STOPS
ONT
Ontario
ONT
Ontario
KLM
 
1 STOP
LHR
London Heathrow
23 Apr - 7 May
£680pp
LHR
London Heathrow
Multiple airlines
   
2 STOPS
ONT
Ontario
ONT
Ontario
Air France
   
2 STOPS
LHR
London Heathrow

One-way flights to Ontario from London

The cheapest one-way flights from London to Ontario
07:25 - 16:17
United Airlines
1 stop
16h 52m
LHR - ONT
United Airlines
£353
United
06:00 - 17:24
KLM
2 stops
19h 24m
LCY - ONT
KLM
£361
KLM
11:00 - 16:17
Air Canada
2 stops
37h 17m
LHR - ONT
Air Canada
£1,622
Air Canada

Related info for your journey

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

Flight FAQs

From London to Ontario

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 for under £364 on Cheapflights?

Yes, there are multiple flights from London to Ontario for under £364. The cheapest flight booked recently is on KLM for just £322, but on average you can expect to pay £359.

Are there direct flights from London to Ontario for under £291 on Cheapflights?

There are no direct flights from London to Ontario, 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 for under £728?

There are currently 11+ open flights from London to Ontario within the next 7 days for less than £728.

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?

Airlines like Virgin Atlantic, United Airlines, and American Airlines fly from London to Ontario in about 14h 04m. The time it takes to get you to your destination can typically vary by up to 1h 08m. This flight may include one or multiple stops.

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

According to our current data, KLM (£323), Virgin Atlantic (£333), and Air France (£345) offers the cheapest pricing from London to Ontario. KLM is 35% cheaper than the average price of flights available within the next 90 days to this destination.

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

The cheapest airline one-way is KLM, with whom users have recently found tickets for as low as £257. However, be on the lookout for offers from American Airlines and United Airlines, as they are both options that can get you from London to Ontario for a low price.

Related searches

Flights to Ontario from London
Flights to London Flights to Ontario Flights from London

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Alternative routes for London to Ontario

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

Destination information for Ontario

Things to know before you go - useful duration and weather info for your trip from London to Ontario.
Today's exchange rate
£1 = $1.38

Airports servicing London

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

Airports servicing Ontario

Top 5 airlines flying from London to Ontario

The chart below displays the airlines Cheapflights users travelling from London to Ontario 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
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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