Cheap flights from Calgary to London from C$ 421

In general, January is the cheapest month to fly from Calgary to London. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around C$ 750. If you aren’t able to travel to London during the month of January, then flying in November is also cheap. Prices for this month can be found on momondo for an average of C$ 767.

According to our data, Wednesday is the cheapest day to fly to London from Calgary. The lowest ticket price found for a Wednesday departure recently was C$ 1,223. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. 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 C$ 1,289.

Our most recent data shows that the best time of day to fly to London is in the evening. Flights from Calgary to London during this time can be as low as C$ 1,201. In the afternoon is when there is more demand to fly to London, so prices are often more expensive at around C$ 1,729 per ticket.

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 C$ 1,155 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 C$ 958 on momondo.

There are 4 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.

You could potentially save up to 1% on your flight if you consider stops on a Calgary to London flight.

As of July 2026, prices for Calgary to London flights are approximately 48% cheaper when compared to flights at the same time last year.

WestJet, British Airways, and Finnair 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 60% of people opting to fly with this airline when travelling to London. Keep in mind that there are 6 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 139 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. 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 15% of their flights experiencing any sort of delay.

Dallas (DFW) was the most common stop: 25% of momondo users choosing one-stop flights on this route connected there.

Flights via Minneapolis (MSP) offer the lowest average round-trip price of C$ 765.

Flights connecting via Amsterdam (AMS) have the shortest average one-way travel time: 10h 50m.

Amsterdam (AMS) has the shortest average layover time for this route: 1h 18m.

11 flights are operational daily from Calgary to London as of July 2026. The most popular departure time for this route is 8:00p.m., with 100% of flights per day taking off in the evening.

The number of flights available between Calgary and London is 77 per week as of July 2026. The most frequent departure day is Tue, with 17% of weekly flights leaving on this day.