Cheap flights from Toronto to London from $303

The month of May is, on average, the cheapest month to fly to London Heathrow Airport from Toronto, with most prices found around $572. If you’re not able to fly to London Heathrow Airport in May, then October is your next best option. Flight prices from Toronto to London Heathrow Airport during October average around $580.

Our data shows that Sunday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $925. The most expensive day to fly to London Heathrow Airport is Saturday, with ticket prices averaging around $1,044.

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the afternoon. momondo users have found flights departing from Toronto to London Heathrow Airport in the afternoon for as low as $975. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the evening are often more expensive with an average ticket price of $981.

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

You are more likely to see cheaper flights to London Heathrow Airport from Toronto when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around $680 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Toronto for as low as $627 on momondo.

There are 4 cabin classes available to choose from on Toronto to London Heathrow flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

No. A direct flight is the cheapest option for a flight between Toronto to London Heathrow Airport.

As of March 2026, prices for Toronto to London Heathrow Airport flights are approximately 20% more expensive when compared to flights at the same time last year.

United Airlines and WestJet are the most popular carriers operating from Toronto to London Heathrow

Air Canada, British Airways and Lufthansa are the top three most popular airlines that fly to London Heathrow Airport from Toronto according to our data. Air Canada is the first choice among our users, with 50% of people opting to fly with this airline when traveling to London Heathrow Airport. Keep in mind that there are 14 different airlines that fly to London Heathrow Airport 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 163 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights in the evening 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. Sunday 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 16% of their flights experiencing any sort of delay.

Dublin (DUB) was the most common stop: 50% of momondo users choosing 1-stop flights on this route connected there.

Flights via Montreal (YUL) offer the lowest average round-trip price of $490.

Flights connecting via Dublin (DUB) have the shortest average one-way travel time: 9h 35m.

Dublin (DUB) has the shortest average layover time for this route: 1h 56m.

As of March 2026, 27 flights take off from Toronto and land in London Heathrow Airport 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 March 2026, 192 flights take off from Toronto and land in London Heathrow Airport each week. The most common flight departure day for this route is Mon, with 18% of weekly flights taking off on this day.