Cheap flights from London to Toronto from $343

The month of September is, on average, the cheapest month to fly to Toronto from London, with most prices found around $499. If you are unable to visit Toronto during the month of September, then departing from London during the month February is also very affordable. Most momondo users find prices during this month for around $512.

On average, the least expensive day to fly to Toronto from London is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $648. However, this price may fluctuate depending on the airline, the season, and holidays. The most expensive day to fly to Toronto is Monday, with ticket prices averaging around $786.

In the morning is the cheapest time of day to fly from London to Toronto when you can find flight prices for as low as $672. Flying to Toronto in the morning is an ideal time because this is during off-peak travel hours. Flights to Toronto are more costly in the afternoon, with an average ticket price of $739. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from London Gatwick to Toronto Pearson Intl for the best London - Toronto flight prices

You are more likely to see cheaper flights to Toronto from London when booking weeks ahead of your departure date. In general, you can expect to find flights to Toronto for around $618 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Toronto from London for as low as $561 on momondo.

There are 3 cabin classes available to choose from on London to Toronto flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 23% on your flight if you consider stops on a London to Toronto flight.

As of March 2026, prices for London to Toronto flights are approximately 6% cheaper when compared to flights at the same time last year.

Icelandair, Aer Lingus, and TAP AIR PORTUGAL are the most popular carriers operating from London to Toronto

Air Canada, Lufthansa and Air Transat are the top three most popular airlines that fly to Toronto from London according to our data. Air Canada is the first choice among our users, with 39% of people opting to fly with this airline when traveling to Toronto. Keep in mind that there are 8 different airlines that fly to Toronto on a routine basis, so you have a few additional options to choose from.

Historically, on average around 14% of flights between London and Toronto have experienced a delay on any given week. The average delay length over the past 12 months has been 137 minutes.

Generally, flights departing at night tend to experience fewer delays. Flights in the early afternoon have, in the past, seen delays more frequently in comparison.

Tuesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Thursday has historically seen more delays on average compared to the rest of the week.

According to our data, Air Canada have had the least number of delays on this route over the last 12 months; with about 8% of their flights experiencing any sort of delay.

Reykjavik (KEF) was the most common stop: 73% of momondo users choosing 1-stop flights on this route connected there.

Flights via Reykjavik (KEF) offer the lowest average round-trip price of $655.

Flights connecting via Dublin (DUB) have the shortest average one-way travel time: 11h 00m.

Reykjavik (KEF) has the shortest average layover time for this route: 1h 25m.

As of March 2026, 24 flights take off from London and land in Toronto each day. The most common flight departure time for this route is 11:00AM, with 53% of daily flights taking off at noon.

As of March 2026, 168 flights take off from London and land in Toronto each week. The most common flight departure day for this route is Wed, with 21% of weekly flights taking off on this day.