Cheap flights from Ontario to London from £318

The cheapest month to fly to London from Ontario is in March. Flight prices, which tend to average around £493, are often lower during this time because this is during the off-season. The month of April is another great option to travel to London, with average flight prices from Ontario averaging around £494.

Our data shows that Wednesday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £509. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Ontario to London for around £616.

The cheapest time of day to fly to London is in the afternoon when flights can be purchased for as low as £523. Flights at midday are often more expensive, with an average ticket price of £652.

You are more likely to see cheaper flights to London from Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around £652 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Ontario for as low as £459 on momondo.

United Airlines, KLM, and Alaska Airlines are the most popular carriers operating from Ontario to London

Virgin Atlantic, British Airways and KLM are the top three most popular airlines that fly to London from Ontario according to our data. Virgin Atlantic is the first choice among our users, with 53% of people opting to fly with this airline when travelling to London. Keep in mind that there are 13 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.