Cheap flights from London to Ontario from £262

In general, September is the cheapest month to fly from London to Region of Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £374. If you aren’t able to travel to Region of Ontario during the month of September, then flying in February is also cheap. Prices for this month can be found on momondo for an average of £375.

The cheapest day to depart from London to Region of Ontario is on a Friday when prices can be found for as low as £519. Flights from London to Region of Ontario on a Monday will generally be more expensive and average around £555. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

Our data shows that the cheapest London to Region of Ontario flights are usually those with departure times in the morning. Our users have found flights to Region of Ontario in the morning for as low as £514. In the afternoon is when there is more demand to fly to Region of Ontario, so prices are often more expensive at around £560 per ticket.

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

You are more likely to see cheaper flights to Region of Ontario from London when booking weeks ahead of your departure date. In general, you can expect to find flights to Region of Ontario for around £468 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Region of Ontario from London for as low as £426 on momondo.

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

British Airways, Delta, and KLM are the most popular carriers operating from London to Ontario

Air Canada, Air Transat and Virgin Atlantic are the top three most popular airlines that fly to Region of Ontario from London according to our data. Air Canada is the first choice among our users, with 67% of people opting to fly with this airline when travelling to Region of Ontario. Keep in mind that there are 17 different airlines that fly to Region of Ontario on a routine basis, so you have a few additional options to choose from.

The number of flights available between London and Region of Ontario is 9 per day as of March 2026. The most frequent departure time is 11:00, with 44% of daily flights leaving in the afternoon.

As of March 2026, 66 flights take off from London and land in Region of Ontario each week. The most common flight departure day for this route is Sat, with 77% of weekly flights taking off on this day.