Cheap flights from London to Los Angeles from £347
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London to Los Angeles departing on 9/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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British Airways flights from London to Ontario
Our best British Airways deals on London to Ontario flight tickets
Virgin Atlantic flights from London to Ontario
Our best Virgin Atlantic deals on London to Ontario flight tickets
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How to get the cheapest flight ticket from London to Ontario
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the typical price of a round-trip flight between London and Ontario?
What is the cheapest month to fly to Ontario?
The month of February is, on average, the cheapest month to fly to Ontario from London, with most prices found around £402. If you’re not able to fly to Ontario in February, then January is your next best option. Flight prices from London to Ontario during January average around £410.
What is the cheapest day to depart on your flight to Ontario?
The cheapest day to depart on your flight to Ontario is on a Wednesday when prices can be found for as low as £484. This is often the case because there is less demand to fly during this day of the week. Flights from London to Ontario on a Sunday will generally be more expensive and average around £559. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.
What is the cheapest time of day to depart on your flight to Ontario?
Flying to Ontario from London in the evening is the least expensive time of day to depart. momondo users have found prices as low as £473 when looking at flights departing in the evening. In contrast, the most expensive time of day to depart to Ontario is at midday when prices are around £556.
How far in advance should I book a flight to Ontario?
You are more likely to see cheaper flights to Ontario from London when booking 26 weeks ahead of your departure date. In general, you can expect to find flights to Ontario for around £524 when searching 26 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ontario from London for as low as £405 on momondo.
What is the cheapest airline that flies from London to Ontario?
British Airways, Iberia, and JetBlue are the most popular carriers operating from London to Ontario
Which airlines fly to Ontario?
Virgin Atlantic, British Airways and Lufthansa are the top three most popular airlines that fly to Ontario from London according to our data. Virgin Atlantic is the first choice among our users, with 40% of people opting to fly with this airline when travelling to Ontario. Keep in mind that there are 23 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.
When to book flights from London to Ontario
Cheap London to Ontario (LON to ONT) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from London to Ontario
How far is London to Ontario by plane?
There are 5417.5 mi between London and Ontario. Flights usually cover this in 13h 28m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from London to Ontario Airport?
Prices for flights from London to Ontario Airport are refreshed on a daily basis.
How many operators does momondo search for flights from London to Ontario Airport?
As of June 2025, there are 6 operators available to choose from for flights from London to Ontario Airport.
How old do you have to be to fly from London to Ontario Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London to Ontario Airport.
What documentation or ID do you need to fly to Ontario Airport?
The travel and health documents you'll need for your trip to Ontario Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Ontario Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from London to Ontario?
momondo data reveals that the most frequently booked airline on the route from London to Ontario is British Airways, representing 35% of all bookings. The subsequent popular airlines are Virgin Atlantic at 26%, United Airlines at 13%, and Lufthansa at 9%.
Best airlines flying from London to Ontario
Compare and see reviews for airlines that fly from London to Ontario with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom £362 | Free Cancellation | Rating 7.6 1,290 reviews | |||
| PriceFrom £374 | Free Cancellation | Rating 7.8 1,358 reviews | |||
| PriceFrom £381 | Free Cancellation | Rating 6.6 7,011 reviews | |||
| PriceFrom £391 | Free Cancellation | Rating 7.4 8,790 reviews | |||
| PriceFrom £401 | Free Cancellation | Rating 7.4 652 reviews | |||
| PriceFrom £426 | Free Cancellation | Rating 6.7 7,139 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from London to Ontario?
Finding the right flight to Ontario from London is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Ontario quick and easy, saving you time and money.
Can I find flights from London to Ontario with flexible booking policies on momondo?
Yes. momondo enables you to select and highlight flights to Ontario from London with this policy.
How can momondo help me find flights from London to Ontario?
momondo provides multiple filters to help you find the best flight to Ontario from London. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.
I’m not ready to book a flight from London to Ontario right now. Can momondo alert me if prices change?
If you are not ready to book a flight from London to Ontario now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Ontario and let you know when they change.