Cheap flights from Calgary to London from $315

The cheapest month to fly to London from Calgary is in April. Flight prices, which tend to average around $230, are often lower during this time because this is during the off-season. The month of January is another great option to travel to London, with average flight prices from Calgary averaging around $384.

The cheapest day to depart from Calgary to London is on a Monday. Travelers who choose to depart for London on a Monday will often find tickets for as low as $976. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $1,123. These prices are subject to change though, so be sure to set up a Price Alert for flights to London.

Flying to London from Calgary in the evening is the least expensive time of day to depart. momondo users have found prices as low as $996 when looking at flights departing in the evening. Flights to London are more costly in the afternoon, with an average ticket price of $1,431. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

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 $816 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Calgary for as low as $675 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 June 2026, prices for Calgary to London flights are approximately 51% cheaper when compared to flights at the same time last year.

United Airlines, Air Transat, and Lufthansa 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 52% of people opting to fly with this airline when traveling to London. Keep in mind that there are 4 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

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 134 minutes.

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

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

According to our data, Air Canada have had the least number of delays on this route over the last 12 months; with about 15% of their flights experiencing any sort of delay.

Amsterdam (AMS) was the most common stop: 50% of momondo users choosing 1-stop flights on this route connected there.

Flights via Toronto (YYZ) offer the lowest average round-trip price of $671.

Flights connecting via Amsterdam (AMS) have the shortest average one-way travel time: 12h 05m.

Dallas (DFW) has the shortest average layover time for this route: 1h 53m.

As of June 2026, there are 12 flights per day flying from Calgary to London. The most common time of day flights depart is 8:00PM, with 100% of flights taking off in the evening.

As of June 2026, 90 flights take off from Calgary and land in London each week. The most common flight departure day for this route is Fri, with 21% of weekly flights taking off on this day.