Cheap flights from Ontario to London from C$ 406

In general, May is the cheapest month to fly from Region of Ontario to London. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around C$ 732. If you aren’t able to travel to London during the month of May, then flying in February is also cheap. Prices for this month can be found on momondo for an average of C$ 756.

According to our data, Sunday is the cheapest day to fly to London from Region of Ontario. The lowest ticket price found for a Sunday departure recently was C$ 1,129. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Region of Ontario to London for around C$ 1,224.

Our most recent data shows that the best time of day to fly to London is in the evening. Flights from Region of Ontario to London during this time can be as low as C$ 1,111. In the afternoon is when there is more demand to fly to London, so prices are often more expensive at around C$ 1,296 per ticket.

Fly from Ottawa to London Gatwick for the best Ontario - London flight prices

You are more likely to see cheaper flights to London from Region of Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around C$ 923 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Region of Ontario for as low as C$ 850 on momondo.

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

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

Air Canada, British Airways and Air Transat are the top three most popular airlines that fly to London from Region of Ontario according to our data. Air Canada is the first choice among our users, with 55% of people opting to fly with this airline when travelling to London. Keep in mind that there are 18 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

34 flights are operational daily from Region of Ontario to London as of March 2026. The most popular departure time for this route is 6:00p.m., with 100% of flights per day taking off in the evening.

The number of flights available between Region of Ontario and London is 242 per week as of March 2026. The most frequent departure day is Sun, with 23% of weekly flights leaving on this day.