Cheap flights from Calgary to London from £182

In general, January is the cheapest month to fly from Calgary to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £410. The month of February is another great option to travel to London Heathrow Airport, with average flight prices from Calgary averaging around £428.

On average, the least expensive day to fly to London Heathrow Airport from Calgary is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as £584. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Friday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Friday is £710.

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the afternoon. momondo users have found flights departing from Calgary to London Heathrow Airport in the afternoon for as low as £598. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are £636 on average. Flights to London Heathrow Airport from Calgary in the evening are generally more expensive because this time of day is more convenient for travellers’ schedules.

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

You are more likely to see cheaper flights to London Heathrow Airport from Calgary when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport 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 London Heathrow Airport from Calgary for as low as £561 on momondo.

There are 3 cabin classes available to choose from on Calgary to London Heathrow Airport 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 18% 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 140 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.

Monday is statistically the day of the week that experiences the fewest delays on this flight route. Saturday 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 15% of their flights experiencing any sort of delay.

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

As of September 2026, there are 86 flights per week flying from Calgary to London Heathrow Airport. The most common day of the week flights depart is Tue, with 15% of flights taking off on this day.