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Cheap flights from Calgary to London Heathrow Airport from £249

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 20/1. Fares are subject to change and may not be available on all flights or dates of travel.
YYC — LHR
31 Aug — 7 Sep1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Calgary to London Heathrow are usually found in January or November, booked 73 days in advance, depart on a Saturday or Tuesday and return on a Thursday

Cheap flight deals from Calgary to Heathrow

Enter your travel dates to find the best prices.

Cheapest flights from Calgary to Heathrow
Explore the most affordable flight options available from Calgary to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 1 August 2026.

Thu 5/1118:05
YYC
-
LHR
2 stops15h 15m
SWISS
Sat 28/1109:00
LHR
-
YYC
2 stops19h 29m
SWISS
Deal found 30/7£514
Mon 19/1019:55
YYC
-
LHR
1 stop17h 25m
Multiple Airlines
Sat 24/1014:10
LHR
-
YYC
Nonstop8h 50m
Multiple Airlines
Deal found 29/7£517
Thu 8/1020:35
YYC
-
LHR
Nonstop8h 30m
WestJet
Tue 13/1014:10
LHR
-
YYC
Nonstop8h 50m
WestJet
Deal found 31/7£517
Sun 11/1020:35
YYC
-
LHR
Nonstop8h 30m
WestJet
Fri 16/1014:10
LHR
-
YYC
Nonstop8h 50m
WestJet
Deal found 31/7£518
Mon 12/1019:55
YYC
-
LHR
1 stop11h 00m
Multiple Airlines
Wed 14/1014:10
LHR
-
YYC
Nonstop8h 50m
Multiple Airlines
Deal found 31/7£523
Mon 12/1019:55
YYC
-
LHR
1 stop11h 00m
Multiple Airlines
Fri 16/1014:10
LHR
-
YYC
Nonstop8h 50m
Multiple Airlines
Deal found 31/7£523
Thu 8/1020:35
YYC
-
LHR
Nonstop8h 30m
WestJet
Mon 12/1013:55
LHR
-
YYC
Nonstop8h 50m
WestJet
Deal found 31/7£524
Sat 17/1019:55
YYC
-
LHR
1 stop17h 25m
Multiple Airlines
Sun 8/1120:50
LHR
-
YYC
2 stops26h 55m
Multiple Airlines
Deal found 31/7£525
Sun 11/1020:35
YYC
-
LHR
Nonstop8h 30m
WestJet
Wed 28/1014:50
LHR
-
YYC
Nonstop9h 05m
WestJet
Deal found 31/7£526
Thu 1/1019:55
YYC
-
LHR
1 stop16h 00m
Multiple Airlines
Sat 3/1014:10
LHR
-
YYC
Nonstop8h 50m
Multiple Airlines
Deal found 30/7£527
Fri 6/1118:30
YYC
-
LHR
Nonstop7h 50m
Air Canada
Sun 15/1113:25
LHR
-
YYC
Nonstop10h 30m
Air Canada
Deal found 31/7£528

Find flight deals from Calgary to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Calgary (YYC) to Heathrow (LHR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 1 August 2026.

Round-trip from

£514

One-way from

£249

Popular in

August

Cheapest in

January

Average price

£789

Good round-trip deal

£550 or less

Good one-way deal

£250 or less
SWISS
  • SWISS
  • 5/11-28/11
  • 4 total stops
  • 34h 44m total
  • Calgary to London
Search Deals
WestJet
  • WestJet
  • 20/1
  • 1 total stop
  • 14h 05m total
  • Calgary to London
Search Deals
Highest demand for flights based on searches. 18% potential increase in price (£105 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£12 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2026
Search Deals
Price to beat on a round-trip flight from Calgary to London Heathrow.
Search Deals
Price to beat on a one-way flight from Calgary to London Heathrow.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Calgary to Heathrow that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 1 August 2026.
Use the filters below to find and compare flights from Calgary to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

CalgaryLondon

YYC - LHR

YYCLHR

Calgary

Mon 12/10

06:00-09:40

1 stop20h 40m

London Heathrow

Wed 14/10

17:55-11:28

2 stops48h 33m

£570

CalgaryLondon

YYC - LHR

YYCLHR

Calgary

Thu 22/10

19:55-11:50

Nonstop8h 55m

London Heathrow

Thu 3/12

06:00-22:59

2 stops22h 59m

£577
Fastest return journey

CalgaryLondon

YYC - LHR

YYCLHR

Calgary

Sun 13/9

20:35-12:05

Nonstop8h 30m

London Heathrow

Tue 13/10

14:10-16:00

Nonstop8h 50m

£603

CalgaryLondon

YYC - LHR

YYCLHR

Calgary

Thu 31/12

06:30-07:15

1 stop18h 45m

London Heathrow

Sun 31/1

08:20-22:43

1 stop20h 23m

£634

CalgaryLondon

YYC - LHR

YYCLHR

Calgary

Wed 30/9

07:00-09:05

1 stop19h 05m

London Heathrow

Tue 13/10

08:55-21:44

1 stop19h 49m

£635

CalgaryLondon

YYC - LHR

YYCLHR

Calgary

Sun 13/9

13:51-12:15

1 stop15h 24m

London Heathrow

Tue 13/10

08:55-21:44

1 stop19h 49m

£635

CalgaryLondon

YYC - LHR

YYCLHR

Calgary

Mon 31/8

13:52-12:15

1 stop15h 23m

London Heathrow

Thu 24/9

06:20-21:42

2 stops22h 22m

£698

CalgaryLondon

YYC - LHR

YYCLHR

Calgary

Tue 25/8

06:45-06:20

1 stop16h 35m

London Heathrow

Wed 16/9

17:20-21:42

2 stops35h 22m

£704

CalgaryLondon

YYC - LHR

YYCLHR

Calgary

Mon 24/8

12:45-12:50

1 stop17h 05m

London Heathrow

Sun 6/9

14:25-23:42

1 stop16h 17m

£716

CalgaryLondon

YYC - LHR

YYCLHR

Calgary

Fri 28/8

06:45-06:20

1 stop16h 35m

London Heathrow

Sun 30/8

14:25-23:42

1 stop16h 17m

£716

Flights are sorted by cheapest return flights first.

Deals found on 1/8

Showing 1-10 of 17 resultsSorted by cheapest first
1
2

Best time to book a flight from Calgary to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Calgary with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Calgary to London Heathrow Airport

How far ahead should I book a flight from Calgary to London Heathrow Airport?

To ensure you get the cheapest price possible for a flight from Calgary to London Heathrow Airport, you should look to book at least 72 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Calgary to London Heathrow Airport?

Currently, January is the cheapest month in which you can book a flight from Calgary to London Heathrow Airport (average of £403). Flying from Calgary to London Heathrow Airport in August is currently the most expensive (average of £789). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from YYC to LHR?

Find hourly flight availability from Calgary to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 1 August 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Calgary to London Heathrow Airport as you normally would.

How much does it cost for a return flight from Calgary to London Heathrow Airport?

Airfare is below average for this route at the moment.

Calgary to London Heathrow Airport flights typically cost between £692 and £883 in November.
The cheapest return price found within the last 5 days was £514 on SWISS (5 Nov–28 Nov).

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Heathrow. Reviews last updated 1 August 2026.
Get a feel of what it's like to fly with WestJet and Air Canada from Calgary to London Heathrow Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
WestJet
7.2
Good
3,424 reviews
Check prices

Boarding

7.4

Entertainment

6.1

Comfort

7.0

Food

6.2

Crew

7.9

Overall

7.2

Reviews

1 / 20
2.0
Mediocre

Blaine,Dec 2025

YYC - YVR

The worst I’ve ever had in 50 years of flying
WestJet
7.2
Good
3,424 reviews
WestJet
7.2
Good
3,424 reviews
Check prices

Boarding

7.4

Entertainment

6.1

Comfort

7.0

Food

6.2

Crew

7.9

Overall

7.2

Reviews

1 / 20
2.0
Mediocre

Blaine,Dec 2025

YYC - YVR

The worst I’ve ever had in 50 years of flying
Air Canada
7.1
Good
11,415 reviews
WestJet
7.2
Good
3,424 reviews
Check prices

Boarding

7.4

Entertainment

6.1

Comfort

7.0

Food

6.2

Crew

7.9

Overall

7.2

Reviews

1 / 20
2.0
Mediocre

Blaine,Dec 2025

YYC - YVR

The worst I’ve ever had in 50 years of flying

Related info for your journey

Find useful and relevant information for your journey from Calgary to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Calgary to London Heathrow?

    If you book a flight to London Heathrow from Calgary, you will be flying from Calgary, which is the city’s only airport. Calgary (YYC) is located 5.8 mi from the center of Calgary. There are 2 flights from Calgary to London Heathrow per day from 2 different airlines.

  • How long is the flight from Calgary to London Heathrow Airport?

    Airlines like United Airlines, Finnair, and British Airways fly from Calgary to London Heathrow Airport in about 15h 24m. The time it takes to get you to your destination can typically vary by up to 5h 16m. There are 4355 mi between Calgary and London Heathrow Airport. Both multi-stop and direct flights can be found to your destination and back.

  • What are the cheapest airlines flying from Calgary to London Heathrow Airport round-trip?

    Currently priced at £263, WestJet will fly you from Calgary to London Heathrow Airport and back. In addition to WestJet, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on Air Canada for as low as £383. WestJet is 56% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Calgary to London Heathrow Airport one-way?

    For one-way options, check prices for WestJet. According to our data, you can fly for as low as £109. Users have also found prices from £252 and £356 on Air Canada and Lufthansa, respectively.

  • What are the most reliable airlines from Calgary to London Heathrow Airport?

    Consider Croatia Airlines (88%), WestJet (77%) or Air Canada (73%) when booking your flight. These represent the most reliable airlines when flying from Calgary to London Heathrow Airport.

  • What are the cheapest flights from Calgary to London Heathrow Airport?

    On average you can expect to pay £531 for a flight from Calgary to London Heathrow Airport. The cheapest flight overall is £155 while the most popular route, (Calgary - London Heathrow) is currently priced at £456.

  • Can I find deals for flights from Calgary to Heathrow that include hotel bookings?

    Yes. In addition to deals on Calgary to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Calgary to Heathrow?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Calgary to Heathrow.

  • Can I find deals for business class flights from Calgary to Heathrow?

    Yes. Cheapflights offers flight deals from Calgary to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Calgary to London Heathrow Airport?

    Currently, January is the cheapest month in which you can book a flight from Calgary to London Heathrow Airport (average of £403). Flying from Calgary to London Heathrow Airport in August is currently the most expensive (average of £789). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Hounslow
Milton Keynes
Luton
Gatwick
Wembley
Slough
Ilford
Hayes
Croydon
Colchester
Brentford
Eastbourne
Northampton
Watford
Swindon
Southend-on-Sea
Enfield
Kingston upon Thames
Poole
Southall

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from Calgary to Heathrow

Discover the top 2 airlines that operate flights from Calgary to Heathrow. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 1 August 2026.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapest£263Average£615FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Air CanadaCheapest£383Average£697FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Calgary to Heathrow?

Deals for Calgary to Heathrow flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Calgary to Heathrow?

Cheapflights helps you find that perfect flight to Heathrow from Calgary by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Calgary to Heathrow with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Calgary to Heathrow flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Calgary to Heathrow become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Heathrow from Calgary today and book when prices fit your budget.

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