Cheap flights from London Heathrow Airport to Ottawa from C$ 434

The month of May is, on average, the cheapest month to fly to Ottawa from London Heathrow Airport, with most prices found around C$ 906. If you aren’t able to travel to Ottawa 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$ 940.

Our data shows that Sunday is the least expensive day to fly to Ottawa. Tickets to fly out on this day can be as low as C$ 900. Flights from London Heathrow Airport to Ottawa on a Thursday will generally be more expensive and average around C$ 1,120. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

Our most recent data shows that the best time of day to fly to Ottawa is in the morning. Flights from London Heathrow Airport to Ottawa during this time can be as low as C$ 1,000. At noon is when there is more demand to fly to Ottawa, so prices are often more expensive at around C$ 1,105 per ticket.

Fly from London Heathrow to Ottawa for the best London Heathrow - Ottawa flight prices

You are more likely to see cheaper flights to Ottawa from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Ottawa for around C$ 1,031 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ottawa from London Heathrow Airport for as low as C$ 728 on momondo.

You could potentially save up to 16% on your flight if you consider stops on a London Heathrow Airport to Ottawa flight.

As of April 2026, prices for London Heathrow Airport to Ottawa flights are approximately 20% cheaper when compared to flights at the same time last year.

KLM is the most popular carrier operating from London Heathrow to Ottawa

Air Canada, Lufthansa and British Airways are the top three most popular airlines that fly to Ottawa from London Heathrow Airport according to our data. Air Canada is the first choice among our users, with 64% of people opting to fly with this airline when travelling to Ottawa. Keep in mind that there are 4 different airlines that fly to Ottawa on a routine basis, so you have a few additional options to choose from.

Historically, on average around 11% of flights between London and Ottawa have experienced a delay on any given week. The average delay length over the past 12 months has been 254 minutes.

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

Thursday is statistically the day of the week that experiences the fewest delays on this flight route. Friday has historically seen more delays on average compared to the rest of the week.

According to our data, Air Canada has had the least delays on this route over the last 12 months, with about 11% of their flights experiencing any sort of delay.

The number of flights available between London Heathrow Airport and Ottawa is 3 per day as of April 2026. The most frequent departure time is 2:00p.m., with 100% of daily flights leaving in the afternoon.

The number of flights available between London Heathrow Airport and Ottawa is 26 per week as of April 2026. The most frequent departure day is Wed, with 27% of weekly flights leaving on this day.