Cheap flights from Toronto to London from $274

The cheapest month to fly to London from Toronto is in February. Flight prices, which tend to average around $579, are often lower during this time because this is during the off-season. The month of January is another great option to travel to London, with average flight prices from Toronto averaging around $593.

The cheapest day to depart from Toronto to London is on a Tuesday. Travelers who choose to depart for London on a Tuesday will often find tickets for as low as $882. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around $1,000. These prices are subject to change though, so be sure to set up a Price Alert for flights to London.

Flying to London from Toronto in the evening is the least expensive time of day to depart. momondo users have found prices as low as $907 when looking at flights departing in the evening. Flights to London are more costly in the afternoon, with an average ticket price of $1,000. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

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

You are more likely to see cheaper flights to London from Toronto when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around $725 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Toronto for as low as $663 on momondo.

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

Air Transat, Porter Airlines, and TAP AIR PORTUGAL are the most popular carriers operating from Toronto to London

Air Canada, Lufthansa and British Airways are the top three most popular airlines that fly to London from Toronto according to our data. Air Canada is the first choice among our users, with 47% of people opting to fly with this airline when traveling to London. Keep in mind that there are 15 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

Historically, on average around 22% of flights between Toronto and London have experienced a delay on any given week. The average delay length over the past 12 months has been 149 minutes.

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

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

According to our data, Virgin Atlantic have had the least number of delays on this route over the last 12 months; with about 14% of their flights experiencing any sort of delay.

Reykjavik (KEF) was the most common stop: 39% of momondo users choosing 1-stop flights on this route connected there.

Flights via Reykjavik (KEF) offer the lowest average round-trip price of $552.

Flights connecting via Dublin (DUB) have the shortest average one-way travel time: 9h 38m.

Dublin (DUB) has the shortest average layover time for this route: 1h 35m.

As of August 2026, 44 flights take off from Toronto and land in London each day. The most common flight departure time for this route is 6:00PM, with 100% of daily flights taking off in the evening.

As of August 2026, 310 flights take off from Toronto and land in London each week. The most common flight departure day for this route is Thu, with 16% of weekly flights taking off on this day.