$353+ Cheap flights from Calgary (YYC) to Heathrow (LHR)
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 7/15. Fares are subject to change and may not be available on all flights or dates of travel.
YYC — LHR
Jun 5 — Jun 121
Round-trip
1 adult, Economy
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Find cheap flights from Calgary to Heathrow with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Calgary to London Heathrow are usually found in January or November, booked 83 days in advance, depart on a Tuesday or Monday and return on a Wednesday
Cheap flight deals from Calgary to Heathrow
Cheapest
Best
Last-minute
One-way
Cheapest flights from Calgary to HeathrowExplore 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 May 6, 2026.
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 May 6, 2026.
This Air Canada deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/137:55 pm
YYC
- LHR
Nonstop8h 55m
Air Canada
Tue 10/2010:15 am
LHR
- YYC
Nonstop9h 35m
Air Canada
Deal found 5/1![Air Canada logo]()
$810
This Air Canada deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/62:05 pm
YYC
- LHR
1 stop16h 15m
Air Canada
Tue 10/203:05 pm
LHR
- YYC
1 stop13h 44m
Air Canada
Deal found 5/2![Air Canada logo]()
$813
This Mytrip deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/156:55 pm
YYC
- LHR
1 stop18h 25m
Multiple Airlines
Mon 6/229:25 pm
LHR
- YYC
1 stop19h 35m
Multiple Airlines
Deal found 5/1![Multiple Airlines logo]()
$820
This Air Canada deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/3011:55 pm
YYC
- LHR
1 stop25h 40m
Air Canada
Tue 10/133:05 pm
LHR
- YYC
1 stop12h 34m
Air Canada
Deal found 5/1![Air Canada logo]()
$837
This Air Canada deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/47:55 pm
YYC
- LHR
Nonstop8h 55m
Air Canada
Sat 10/1710:15 am
LHR
- YYC
Nonstop9h 35m
Air Canada
Deal found 5/4![Air Canada logo]()
$849
Best flights from Calgary to HeathrowDiscover carefully curated flight deals from Calgary to Heathrow that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 6, 2026.
Discover carefully curated flight deals from Calgary to Heathrow that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 6, 2026.
This United Airlines deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/106:45 am
YYC
- LHR
1 stop31h 40m
United Airlines
Wed 9/167:25 am
LHR
- YYC
2 stops22h 11m
United Airlines
Deal found 5/3![United Airlines logo]()
$1,010
This Scandinavian Airlines deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1012:00 pm
YYC
- LHR
2 stops26h 40m
Scandinavian Airlines
Sun 10/46:40 am
LHR
- YYC
3 stops22h 35m
Scandinavian Airlines
Deal found 5/4![Scandinavian Airlines logo]()
$1,301
This Delta deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/92:30 pm
YYC
- LHR
2 stops16h 15m
Delta
Fri 7/2412:25 pm
LHR
- YYC
1 stop15h 10m
Delta
Deal found 5/3![Delta logo]()
$1,352
This United Airlines deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/116:45 am
YYC
- LHR
2 stops17h 10m
United Airlines
Thu 10/158:00 am
LHR
- YYC
2 stops20h 48m
United Airlines
Deal found 5/3![United Airlines logo]()
$1,014
This United Airlines deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/286:00 am
YYC
- LHR
2 stops20h 20m
United Airlines
Wed 8/1211:25 am
LHR
- YYC
1 stop14h 05m
United Airlines
Deal found 5/4![United Airlines logo]()
$1,062
This United Airlines deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/139:30 am
YYC
- LHR
1 stop17h 10m
United Airlines
Mon 8/317:25 am
LHR
- YYC
2 stops22h 11m
United Airlines
Deal found 5/4![United Airlines logo]()
$1,067
This Delta deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/296:45 am
YYC
- LHR
2 stops19h 05m
Delta
Sun 8/210:55 am
LHR
- YYC
1 stop19h 03m
Delta
Deal found 5/4![Delta logo]()
$1,390
This United Airlines deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/143:22 pm
YYC
- LHR
2 stops31h 33m
United Airlines
Wed 6/2411:05 am
LHR
- YYC
3 stops38h 05m
United Airlines
Deal found 5/4![United Airlines logo]()
$1,079
This United Airlines deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/158:30 am
YYC
- LHR
2 stops19h 10m
United Airlines
Mon 6/228:00 am
LHR
- YYC
2 stops20h 48m
United Airlines
Deal found 5/1![United Airlines logo]()
$1,185
This United Airlines deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/27:15 pm
YYC
- LHR
3 stops27h 40m
United Airlines
Sun 8/165:50 pm
LHR
- YYC
2 stops35h 46m
United Airlines
Deal found 5/3![United Airlines logo]()
$1,249
Last-minute flights from Calgary to HeathrowDiscover last-minute flight deals from Calgary to Heathrow. Data last updated May 6, 2026 and is based on user searches.
Discover last-minute flight deals from Calgary to Heathrow. Data last updated May 6, 2026 and is based on user searches.
This Air Canada deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/611:20 am
YYC
- LHR
1 stop14h 15m
Air Canada
Wed 5/132:10 pm
LHR
- YYC
1 stop13h 41m
Air Canada
Deal found 5/1![Air Canada logo]()
$858
This Kiwi.com deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/118:35 pm
YYC
- LHR
Nonstop8h 30m
Multiple Airlines
Mon 5/183:00 pm
LHR
- YYC
2 stops26h 00m
Multiple Airlines
Deal found 5/3![Multiple Airlines logo]()
$887
This Air Canada deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/127:55 pm
YYC
- LHR
Nonstop8h 55m
Air Canada
Tue 6/93:05 pm
LHR
- YYC
1 stop15h 41m
Air Canada
Deal found 5/1![Air Canada logo]()
$905
This Air Canada deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/267:55 pm
YYC
- LHR
Nonstop8h 55m
Air Canada
Tue 6/93:05 pm
LHR
- YYC
1 stop15h 41m
Air Canada
Deal found 5/5![Air Canada logo]()
$907
This oojo deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/48:35 pm
YYC
- LHR
Nonstop8h 30m
WestJet
Sun 6/212:10 pm
LHR
- YYC
Nonstop8h 50m
WestJet
Deal found 5/1![WestJet logo]()
$909
This oojo deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/128:35 pm
YYC
- LHR
Nonstop8h 30m
WestJet
Sun 6/142:10 pm
LHR
- YYC
Nonstop8h 50m
WestJet
Deal found 5/1![WestJet logo]()
$891
This Mytrip deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/156:55 pm
YYC
- LHR
1 stop18h 25m
Multiple Airlines
Mon 6/229:25 pm
LHR
- YYC
1 stop19h 35m
Multiple Airlines
Deal found 5/1![Multiple Airlines logo]()
$820
This Mytrip deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/178:35 pm
YYC
- LHR
Nonstop8h 30m
Multiple Airlines
Mon 6/223:00 pm
LHR
- YYC
2 stops26h 00m
Multiple Airlines
Deal found 5/2![Multiple Airlines logo]()
$868
One-way flights from Calgary to HeathrowSearch for one-way flight options from Calgary to Heathrow. Find affordable one-way fares based on user searches. Data last updated May 6, 2026.
Search for one-way flight options from Calgary to Heathrow. Find affordable one-way fares based on user searches. Data last updated May 6, 2026.
This Air Canada deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/1511:15 am
YYC
- LHR
1 stop14h 20m
Air Canada
Deal found 5/1![Air Canada logo]()
$353
This Air Canada deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/53:05 pm
YYC
- LHR
1 stop15h 15m
Air Canada
Deal found 5/6![Air Canada logo]()
$355
This Air Canada deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/246:00 am
YYC
- LHR
1 stop17h 30m
Air Canada
Deal found 5/1![Air Canada logo]()
$357
This Kiwi.com deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/297:00 pm
YYC
- LHR
2 stops30h 05m
Multiple Airlines
Deal found 5/2![Multiple Airlines logo]()
$361
This oojo deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/58:35 pm
YYC
- LHR
Nonstop8h 30m
WestJet
Deal found 5/3![WestJet logo]()
$375
This United Airlines deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/197:15 pm
YYC
- LHR
3 stops27h 40m
United Airlines
Deal found 5/6![United Airlines logo]()
$383
This United Airlines deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/37:15 pm
YYC
- LHR
3 stops29h 00m
United Airlines
Deal found 5/4![United Airlines logo]()
$384
This Kiwi.com deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/97:05 am
YYC
- LHR
3 stops30h 15m
Multiple Airlines
Deal found 5/2![Multiple Airlines logo]()
$407
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 May 6, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $813 (Air Canada) |
One-way from | $353 (Air Canada) |
Popular in | July |
Cheapest in | January |
Average price | $884 |
Good round-trip deal | $980 or less |
Good one-way deal | $360 or less |
Cheapflights Fare Finder
Customize 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 2,558,603 searches. Data last updated May 6, 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
Cheapest round-trip
CalgaryLondon
YYC - LHR
YYCLHR
Calgary
Thu 9/10
6:45 am-9:25 pm
1 stop31h 40m
London Heathrow
Wed 9/16
7:25 am-10:36 pm
2 stops22h 11m
$1,010
CalgaryLondon
YYC - LHR
YYCLHR
Calgary
Sun 10/11
6:45 am-6:55 am
2 stops17h 10m
London Heathrow
Thu 10/15
8:00 am-9:48 pm
2 stops20h 48m
$1,014
CalgaryLondon
YYC - LHR
YYCLHR
Calgary
Tue 7/28
6:00 am-9:20 am
2 stops20h 20m
London Heathrow
Wed 8/12
11:25 am-6:30 pm
1 stop14h 05m
$1,062
CalgaryLondon
YYC - LHR
YYCLHR
Calgary
Thu 8/13
9:30 am-9:40 am
1 stop17h 10m
London Heathrow
Mon 8/31
7:25 am-10:36 pm
2 stops22h 11m
$1,067
CalgaryLondon
YYC - LHR
YYCLHR
Calgary
Sun 6/14
3:22 pm-5:55 am
2 stops31h 33m
London Heathrow
Wed 6/24
11:05 am-6:10 pm
3 stops38h 05m
$1,079
CalgaryLondon
YYC - LHR
YYCLHR
Calgary
Mon 6/15
8:30 am-10:40 am
2 stops19h 10m
London Heathrow
Mon 6/22
8:00 am-9:48 pm
2 stops20h 48m
$1,185
CalgaryLondon
YYC - LHR
YYCLHR
Calgary
Sun 8/2
7:15 pm-5:55 am
3 stops27h 40m
London Heathrow
Sun 8/16
5:50 pm-10:36 pm
2 stops35h 46m
$1,249
CalgaryLondon
YYC - LHR
YYCLHR
Calgary
Thu 9/10
12:00 pm-9:40 pm
2 stops26h 40m
London Heathrow
Sun 10/4
6:40 am-10:15 pm
3 stops22h 35m
$1,301
Quickest round-trip
CalgaryLondon
YYC - LHR
YYCLHR
Calgary
Thu 7/9
2:30 pm-1:45 pm
2 stops16h 15m
London Heathrow
Fri 7/24
12:25 pm-8:35 pm
1 stop15h 10m
$1,352
CalgaryLondon
YYC - LHR
YYCLHR
Calgary
Wed 7/29
6:45 am-8:50 am
2 stops19h 05m
London Heathrow
Sun 8/2
10:55 am-10:58 pm
1 stop19h 03m
$1,390
Showing 1-10 of 18 resultsSorted by cheapest first
Compare providers for flights from Calgary to Heathrow
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Calgary to Heathrow in May.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*1 star |
- Most accurate provider: When it comes to deals on Calgary-London Heathrow Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Calgary-London Heathrow Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Calgary-London Heathrow Airport flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Calgary-London Heathrow Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Calgary-London Heathrow Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
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.
YYC-LHR
Estimated round-trip 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
Prices
Airlines
Delays
More
How far ahead should I book a flight from Calgary to London Heathrow Airport?
The best time to book flights from Calgary to London Heathrow Airport is 82 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
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 $541). Flying from Calgary to London Heathrow Airport in July is currently the most expensive (average of $1,027). 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 May 6, 2026.
When flying from Calgary to London Heathrow Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
How often are flights from Calgary to London delayed?
About 17% of weekly flights between Calgary and London have experienced delays in the past year, with the average delay time being 132 minutes.
What is the most punctual flight time for Calgary to London flights?
Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving at night tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Monday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Calgary to London flights?
Over the last year, Air Canada have had the lowest number of delays on this route, with just 14% of flights being delayed.
What’s the top layover airport for flights from Calgary to London Heathrow Airport?
Share of 1-stop round-trip flights from Calgary to London Heathrow Airport chosen by Cheapflights users in the past 12 months, using the same layover each way.
Chicago (ORD) – chosen by Cheapflights users on 50% of 1-stop itineraries from Calgary to London Heathrow Airport on Cheapflights.
What’s the cheapest layover airport for flights from Calgary to London Heathrow Airport?
Average round-trip fare for 1-stop flights from Calgary to London Heathrow Airport, chosen by Cheapflights users in the past 12 months, with the same layover each way.
Chicago (ORD) is the most affordable 1-stop option, with an average round-trip price of $911.
What’s the fastest layover option from Calgary to London Heathrow Airport?
Shortest average travel time for 1-stop one-way flights from Calgary to London Heathrow Airport, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Montreal (YUL) have the shortest average one-way travel time for 1-stop routes: 11h 40m.
Which airport typically offers the quickest layover for flights from Calgary to London Heathrow Airport?
Average layover duration for 1-stop one-way flights from Calgary to London Heathrow Airport, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Chicago (ORD) offer the fastest connection on this route, with an average layover time of 2h 22m.
The best insider tips for Calgary to London Heathrow Airport flights
AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Calgary to London Heathrow Airport trip
Our travel experts
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 May 6, 2026.
Peruse reviews from past customers who have flown with Delta,WestJet, andAir Canada from Calgary to London Heathrow Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Entertainment
7.8
Food
7.2
Overall
7.9
Crew
8.5
Comfort
7.9
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Boarding
8.1
Entertainment
7.8
Food
7.2
Overall
7.9
Crew
8.5
Comfort
7.9
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Boarding
8.1
Entertainment
7.8
Food
7.2
Overall
7.9
Crew
8.5
Comfort
7.9
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Boarding
8.1
Entertainment
7.8
Food
7.2
Overall
7.9
Crew
8.5
Comfort
7.9
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Boarding
8.1
Entertainment
7.8
Food
7.2
Overall
7.9
Crew
8.5
Comfort
7.9
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Boarding
8.1
Entertainment
7.8
Food
7.2
Overall
7.9
Crew
8.5
Comfort
7.9
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
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.
Traveling to a place near London Heathrow Airport?
Book flights to London Heathrow Airport if you plan to visit one of these locationsIlford
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Top 5 airlines flying from Calgary to Heathrow
Discover the top 5 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 2,558,603 searches. Data last updated May 6, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$514 | Average$972 | FlexibilityNo cancel fee | On-time60% | |
| Cheapest$540 | Average$901 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$560 | Average$920 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$598 | Average$828 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$698 | Average$911 | FlexibilityNo cancel fee | On-time70% |