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Cheap flights from Calgary to London Heathrow Airport from £139

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 7/3. Fares are subject to change and may not be available on all flights or dates of travel.
YYC — LHR
10 Mar — 17 Mar1
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 72 days in advance, depart on a Thursday 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 8 February 2026.

Tue 10/322:10
YYC
-
LHR
Nonstop8h 40m
WestJet
Sat 14/314:50
LHR
-
YYC
Nonstop8h 50m
WestJet
Deal found 4/2£337
Fri 6/321:10
YYC
-
LHR
Nonstop8h 40m
WestJet
Wed 18/314:50
LHR
-
YYC
Nonstop8h 50m
WestJet
Deal found 4/2£338
Tue 3/321:10
YYC
-
LHR
Nonstop8h 40m
WestJet
Wed 11/314:50
LHR
-
YYC
Nonstop8h 50m
WestJet
Deal found 6/2£341
Tue 3/321:10
YYC
-
LHR
Nonstop8h 40m
Multiple Airlines
Wed 11/307:15
LHR
-
YYC
1 stop15h 30m
Multiple Airlines
Deal found 7/2£347
Mon 16/221:10
YYC
-
LHR
Nonstop8h 40m
WestJet
Fri 27/214:50
LHR
-
YYC
Nonstop8h 50m
WestJet
Deal found 6/2£352
Mon 2/321:10
YYC
-
LHR
Nonstop8h 40m
Multiple Airlines
Sun 15/308:20
LHR
-
YYC
1 stop14h 25m
Multiple Airlines
Deal found 5/2£353
Mon 2/321:10
YYC
-
LHR
Nonstop8h 40m
WestJet
Sun 15/314:50
LHR
-
YYC
Nonstop8h 50m
WestJet
Deal found 6/2£355
Sun 8/322:10
YYC
-
LHR
Nonstop8h 40m
WestJet
Mon 16/314:50
LHR
-
YYC
Nonstop8h 50m
WestJet
Deal found 7/2£358
Mon 16/221:10
YYC
-
LHR
Nonstop8h 40m
WestJet
Sun 1/314:50
LHR
-
YYC
Nonstop8h 50m
WestJet
Deal found 6/2£358
Sun 1/321:10
YYC
-
LHR
Nonstop8h 40m
WestJet
Sun 15/314:50
LHR
-
YYC
Nonstop8h 50m
WestJet
Deal found 5/2£361

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 8 February 2026.

Round-trip from

£337

One-way from

£139

Popular in

July

Cheapest in

January

Average price

£409

Good round-trip deal

£478 or less

Good one-way deal

£259 or less
WestJet
  • WestJet
  • 10/3-14/3
  • Nonstop
  • 17h 30m total
  • Calgary to London
Search Deals
WestJet
  • WestJet
  • 7/3
  • Nonstop
  • 8h 40m total
  • Calgary to London
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (£101 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£11 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 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 8 February 2026.
Use the filters below to find and compare flights from Calgary to London Heathrow Airport that are best for you.

Fly from

Calgary

Fly to

Heathrow

Route

Depart

Return

Price

CalgaryLondon

YYC - LHR

YYCLHR

Calgary

Mon 13/4

13:53-06:45

2 stops33h 52m

London Heathrow

Sat 18/4

13:40-21:48

2 stops39h 08m

£579

CalgaryLondon

YYC - LHR

YYCLHR

Calgary

Mon 30/3

06:45-05:55

1 stop16h 10m

London Heathrow

Tue 7/4

16:00-13:53

2 stops28h 53m

£581

CalgaryLondon

YYC - LHR

YYCLHR

Calgary

Wed 25/2

06:15-08:25

2 stops19h 10m

London Heathrow

Thu 19/3

16:20-11:30

2 stops25h 10m

£612

CalgaryLondon

YYC - LHR

YYCLHR

Calgary

Fri 20/2

06:15-09:40

1 stop20h 25m

London Heathrow

Sat 28/2

10:25-21:53

2 stops18h 28m

£612

CalgaryLondon

YYC - LHR

YYCLHR

Calgary

Thu 19/2

15:30-20:35

2 stops22h 05m

London Heathrow

Thu 26/2

07:30-19:12

2 stops18h 42m

£618

CalgaryLondon

YYC - LHR

YYCLHR

Calgary

Tue 28/4

06:45-05:55

1 stop16h 10m

London Heathrow

Tue 12/5

06:55-13:53

2 stops37h 58m

£645

CalgaryLondon

YYC - LHR

YYCLHR

Calgary

Mon 13/4

12:45-14:25

1 stop18h 40m

London Heathrow

Tue 21/4

17:10-21:44

2 stops35h 34m

£690

CalgaryLondon

YYC - LHR

YYCLHR

Calgary

Tue 24/2

12:45-10:00

1 stop14h 15m

London Heathrow

Tue 3/3

18:45-21:56

2 stops34h 11m

£692

CalgaryLondon

YYC - LHR

YYCLHR

Calgary

Tue 10/3

06:30-10:25

2 stops21h 55m

London Heathrow

Mon 16/3

16:10-21:56

1 stop35h 46m

£705

CalgaryLondon

YYC - LHR

YYCLHR

Calgary

Fri 10/4

06:00-09:40

1 stop20h 40m

London Heathrow

Fri 1/5

13:40-21:48

2 stops39h 08m

£709

Flights are sorted by cheapest return flights first.

Deals found on 5/2

Showing 1-10 of 21 results
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2
3

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?

Use this chart to determine the optimal time to book a return flight from Calgary to Heathrow. Price data was last updated on 30 January 2026.

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 £312). Flying from Calgary to London Heathrow Airport in July is currently the most expensive (average of £583). 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 8 February 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.

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 8 February 2026.
Get a feel of what it's like to fly with WestJet, Air Canada, andLufthansa 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
3,255 reviews
Check prices

Food

6.2

Boarding

7.4

Overall

7.2

Entertainment

6.1

Crew

7.9

Comfort

7.0

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
3,255 reviews
WestJet
7.2
Good
3,255 reviews
Check prices

Food

6.2

Boarding

7.4

Overall

7.2

Entertainment

6.1

Crew

7.9

Comfort

7.0

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
10,697 reviews
WestJet
7.2
Good
3,255 reviews
Check prices

Food

6.2

Boarding

7.4

Overall

7.2

Entertainment

6.1

Crew

7.9

Comfort

7.0

Reviews

1 / 20
2.0
Mediocre

Blaine,Dec 2025

YYC - YVR

The worst I’ve ever had in 50 years of flying
Lufthansa
6.8
Okay
7,773 reviews
WestJet
7.2
Good
3,255 reviews
Check prices

Food

6.2

Boarding

7.4

Overall

7.2

Entertainment

6.1

Crew

7.9

Comfort

7.0

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 12 flights from Calgary to London Heathrow per day from 3 different airlines.

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

    Airlines like United Airlines fly from Calgary to London Heathrow Airport in about 33h 52m. The time it takes to get you to your destination can typically vary by up to . There are 4355 mi between Calgary and London Heathrow Airport.

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

    Currently priced at £282, 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. Search Cheapflights for deals from Air Canada and Lufthansa - these airlines can fly you to your destination from £433 and £469, respectively. WestJet is 50% cheaper than the average price of flights available within the next 90 days to this destination.

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

    Consider Air Canada (50%), Aegean Airlines (50%) or Thai Airways (50%) 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 £456 for a flight from Calgary to London Heathrow Airport. The cheapest flight overall is £138 while the most popular route, (Calgary - London Heathrow) is currently priced at £353.

  • 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 £312). Flying from Calgary to London Heathrow Airport in July is currently the most expensive (average of £583). 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
Milton Keynes
Croydon
Luton
Northampton
Wembley
Gatwick
Slough
Ilford
Hounslow
Brentford
Hayes
Colchester
Watford
Guildford
Swindon
Bedford
Chelmsford
Eastbourne
Crawley
Kingston upon Thames

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 3 airlines flying from Calgary to Heathrow

Discover the top 3 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 8 February 2026.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapest£282Average£592FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Air CanadaCheapest£405Average£644FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
LufthansaCheapest£469Average£636FlexibilityNo cancel feeOn-time76%
Search Lufthansa 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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