Cheap flights from Calgary to London from £142

The cheapest month to fly to London from Calgary is in January. Flight prices, which tend to average around £373, are often lower during this time because this is during the off-season. The month of November is another great option to travel to London, with average flight prices from Calgary averaging around £406.

Our data shows that Thursday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £592. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Calgary to London for around £720.

The cheapest time of day to fly to London is in the evening when flights can be purchased for as low as £648. Flights in the afternoon are often more expensive, with an average ticket price of £706.

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

You are more likely to see cheaper flights to London from Calgary when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around £586 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 Calgary for as low as £545 on momondo.

There are 3 cabin classes available to choose from on Calgary to London flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

No. A direct flight is the cheapest option for a flight between Calgary to London.

As of March 2026, prices for Calgary to London flights are approximately 25% more expensive when compared to flights at the same time last year.

Air Canada, WestJet, and SWISS are the most popular carriers operating from Calgary to London

WestJet, Air Canada and Lufthansa are the top three most popular airlines that fly to London from Calgary according to our data. WestJet is the first choice among our users, with 47% of people opting to fly with this airline when travelling to London. Keep in mind that there are 3 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

Historically, on average around 19% of flights between Calgary and London have experienced a delay on any given week. The average delay length over the past 12 months has been 129 minutes.

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

Monday 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 have had the fewest delays on this route over the last 12 months, with about 16% of their flights experiencing any sort of delay.

The number of flights available between Calgary and London is 12 per day as of March 2026. The most frequent departure time is 19:00, with 100% of daily flights leaving in the evening.

As of March 2026, there are 84 flights per week flying from Calgary to London. The most common day of the week flights depart is Mon, with 14% of flights taking off on this day.