Cheap flights from Ottawa to the United Kingdom from £246

The cheapest month to fly to United Kingdom from Ottawa is in September. Flight prices, which tend to average around £481, are often lower during this time because this is during the off-season. If you are unable to visit United Kingdom during the month of September, then departing from Ottawa during the month January is also very affordable. Most momondo users find prices during this month for around £512.

The cheapest day to depart from Ottawa to United Kingdom is on a Friday. Travellers who choose to depart for United Kingdom on a Friday will often find tickets for as low as £551. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Ottawa to United Kingdom for around £749.

The cheapest time of day to fly to United Kingdom is in the evening when flights can be purchased for as low as £581. Try not to purchase tickets in the afternoon because they tend to be around £663. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

You are more likely to see cheaper flights to United Kingdom from Ottawa when booking weeks ahead of your departure date. In general, you can expect to find flights to United Kingdom for around £622 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to United Kingdom from Ottawa for as low as £558 on momondo.

There is only 1 cabin class available to choose from on Ottawa to United Kingdom flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Historically, on average around 28% of flights between Ottawa and United Kingdom have experienced a delay on any given week. The average delay length over the past 12 months has been 132 minutes.

Generally, flights departing in the evening tend to experience fewer delays. Flights departing at night have, in the past, seen delays more frequently in comparison.

Tuesday 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 Transat have had the fewest delays on this route over the last 12 months, with about 20% of their flights experiencing any sort of delay.

The number of flights available between Ottawa and United Kingdom is 1 per day as of November 2026. The most frequent departure time is 19:00, with 100% of daily flights leaving in the evening.

12 flights are operational weekly from Ottawa to United Kingdom as of November 2026. The most popular departure day for this route is Sat, with 58% of flights per week taking off on this day.