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 January, booked 60 days in advance, depart on a Tuesday or Wednesday 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 2022: compare London to Ontario flight prices with the expected peak season, weather and rainfall in Ontario.
LON - ONT
Price
£577 - £909
ONT
Temperature
12 - 26 °C
ONT
Rainfall
3 - 86 mm

Popular in

July

High demand for flights, 20% potential price rise

Cheapest in

February

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

Round-trip from

£475

From London (LON) to Ontario

One-way from

£426

One-way flight from London (LON) to Ontario

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 London to Ontario?

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 28% on flights from London to Ontario 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 £623. For sooner than that we have options available in the next 3 days from £713.

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

It’s optimal to fly from London to Ontario in the morning. By choosing this option you can save up to 29% on the cost of your flight, compared to a flight in the evening.

What is the cheapest day to fly round-trip from London to Ontario?

Departing on a Monday is a good option for securing a great price. You can expect to save up to 31% when planning your travel around this day of the week.

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

Flights from London to Ontario lean towards being more expensive in August. Prices are generally better when you fly from London to Ontario in February, with the cheapest ticket starting at £349.

Cheap flights from London to Ontario in June, July 2022

The best prices found for LON to ONT flights in June, July
5 Jul - 27 Jul
£600pp
LHR
London Heathrow
United Airlines
   
2 STOPS
ONT
Ontario
ONT
Ontario
United Airlines
   
2 STOPS
LHR
London Heathrow
30 Jun - 9 Nov
£603pp
LHR
London Heathrow
United Airlines
 
1 STOP
ONT
Ontario
ONT
Ontario
United Airlines
 
1 STOP
LHR
London Heathrow
8 Jul - 30 Nov
£616pp
LHR
London Heathrow
United Airlines
 
1 STOP
ONT
Ontario
ONT
Ontario
United Airlines
 
1 STOP
LHR
London Heathrow

London to Ontario 2022 flight deals

Cheap flights to Ontario from London found for this year
2 Nov - 9 Nov
£444pp
LHR
London Heathrow
United Airlines
 
1 STOP
ONT
Ontario
ONT
Ontario
United Airlines
 
1 STOP
LHR
London Heathrow
9 Nov - 16 Nov
£448pp
LHR
London Heathrow
Air Canada
   
2 STOPS
ONT
Ontario
ONT
Ontario
Air Canada
   
2 STOPS
LHR
London Heathrow
1 Nov - 8 Nov
£449pp
LHR
London Heathrow
United Airlines
 
1 STOP
ONT
Ontario
ONT
Ontario
United Airlines
 
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
5 Jul - 27 Jul
£600pp
LHR
London Heathrow
United Airlines
   
2 STOPS
ONT
Ontario
ONT
Ontario
United Airlines
   
2 STOPS
LHR
London Heathrow
8 Jul - 30 Nov
£616pp
LHR
London Heathrow
United Airlines
 
1 STOP
ONT
Ontario
ONT
Ontario
United Airlines
 
1 STOP
LHR
London Heathrow
5 Jul - 12 Jul
£622pp
LHR
London Heathrow
United Airlines
 
1 STOP
ONT
Ontario
ONT
Ontario
United Airlines
 
1 STOP
LHR
London Heathrow

One-way flights to Ontario from London

The cheapest one-way flights from London to Ontario
11:25 - 19:45
Virgin Atlantic
1 stop
16h 20m
LHR - ONT
Virgin Atlantic
£426
StudentUniverse
04:25 - 17:45
JetBlue
1 stop
21h 20m
LHR - ONT
JetBlue
09:40 - 17:11
Lufthansa
1 stop
15h 31m
LHR - ONT
Lufthansa
£662
Kiwi.com

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

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

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

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 £500 on Cheapflights?

Yes, there are multiple flights from London to Ontario for under £500. The cheapest flight booked recently is on United Airlines for just £444, but on average you can expect to pay £484.

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

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

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

According to our current data, United Airlines (£444), Air Canada (£448), and Delta (£459) offers the cheapest pricing from London to Ontario. You may be able to fly from London to Ontario for 26% less than the average price by searching for these airlines.

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

To fly one-way, consider booking your trip with Virgin Atlantic, which is currently one of the cheapest options available, starting at £424. JetBlue flights start at £575 while deals on Avianca start at £577 one-way.

What are the most popular routes from London to Ontario?

The most popular route from London to Ontario is London Heathrow - Ontario. You may also consider London Gatwick - Ontario or London City - Ontario.

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

When booking a flight from London to Ontario, you may want to consider flying on American Airlines, Finnair or British Airways as they are the most popular for this route.

COVID Restrictions

View COVID Travel Restrictions for Ontario, CA

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

Information is based on travel restrictions from London to Ontario

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

COVID-19 testing requirements
Visitors from London are not required to present a negative COVID-19 PCR test or antigen result upon entering Ontario.

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

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

Returning to London from Ontario

COVID-19 testing requirements
Visitors from Ontario are not required to present a negative COVID-19 PCR test or antigen result upon entering London.

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

Hide COVID Travel Restrictions for Ontario, CA

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 = $1.22

Airports servicing London

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

Airports servicing Ontario

Top 4 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
British Airways
£472 £644 No cancel fee 70%
Search British Airways flights
United Airlines
£531 £651 No cancel fee 69%
Search United Airlines flights
Virgin Atlantic
£553 £648 No cancel fee 72%
Search Virgin Atlantic flights
American Airlines
£912 £1,838 No cancel fee 71%
Search American Airlines flights
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