Cheap flights from St. John's to London Heathrow Airport from C$ 323

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 22/10. Fares are subject to change and may not be available on all flights or dates of travel.
YYT — LHR
11 Oct — 18 Oct1
1 adult
1 adult, Economy

Cheap flight deals from St. John's to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from St. John's (YYT) 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 11 September 2025.

Round-trip from

C$ 931

One-way from

C$ 323

Popular in

December

Cheapest in

March

Average price

C$ 1,175
Air Canada
  • Air Canada
  • 2/3-9/3
  • 3 total stops
  • 28h 00m total
  • St. John's to London
22/10
  • 22/10
  • 1 total stop
  • 14h 55m total
  • St. John's to London
Highest demand for flights based on searches. 2% potential increase in price (C$ 36 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease (C$ 49 potential savings vs. average RT price).
Average for round-trip flights in September 2025

Find flight deals from St. John's to Heathrow

Cheapest flights from St. John's to Heathrow
Explore the most affordable flight options available from St. John's to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 September 2025.

Mon 15/97:15 p.m.YYT - LHR
1 stop22h 15mAir Canada
Mon 22/96:50 a.m.LHR - YYT
2 stops21h 56mAir Canada
Deal found 10/9C$ 917
Wed 17/92:55 p.m.YYT - LHR
2 stops12h 05mMultiple Airlines
Wed 24/92:05 p.m.LHR - YYT
1 stop14h 04mMultiple Airlines
Deal found 10/9C$ 944
Mon 22/95:50 a.m.YYT - LHR
1 stop24h 15mAir Canada
Mon 13/106:50 a.m.LHR - YYT
2 stops21h 19mAir Canada
Deal found 11/9C$ 945
Tue 18/117:30 a.m.YYT - LHR
1 stop9h 35mAir Canada
Mon 24/116:50 a.m.LHR - YYT
2 stops14h 01mAir Canada
Deal found 9/9C$ 946

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. John's 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 629,999 searches. Data last updated 11 September 2025.
Use the filters below to find and compare flights from St. John's to London Heathrow Airport that are best for you.

Fly from

St. John's

Fly to

Heathrow

Route

Depart

Return

Price

St. John'sLondon

YYT - LHR

YYTLHR

St John's

Mon 2/3

1:25 p.m.-7:10 a.m.

2 stops14h 15m

London Heathrow

Mon 9/3

9:00 a.m.-8:15 p.m.

1 stop13h 45m

C$ 931

St. John'sLondon

YYT - LHR

YYTLHR

St John's

Wed 24/9

2:55 p.m.-6:30 a.m.

2 stops12h 05m

London Heathrow

Wed 15/10

6:50 a.m.-12:39 a.m.

2 stops21h 19m

C$ 945

St. John'sLondon

YYT - LHR

YYTLHR

St John's

Mon 22/9

6:10 p.m.-9:35 a.m.

1 stop11h 55m

London Heathrow

Mon 13/10

9:30 a.m.-12:39 a.m.

1 stop18h 39m

C$ 958

St. John'sLondon

YYT - LHR

YYTLHR

St John's

Wed 24/9

4:35 p.m.-9:35 a.m.

2 stops13h 30m

London Heathrow

Wed 8/10

9:30 a.m.-10:23 p.m.

2 stops16h 23m

C$ 958

St. John'sLondon

YYT - LHR

YYTLHR

St John's

Mon 29/9

4:35 p.m.-9:35 a.m.

2 stops13h 30m

London Heathrow

Mon 6/10

9:30 a.m.-12:39 a.m.

1 stop18h 39m

C$ 960

St. John'sLondon

YYT - LHR

YYTLHR

St John's

Mon 29/9

11:00 a.m.-9:00 p.m.

1 stop30h 30m

London Heathrow

Sun 12/10

6:50 a.m.-5:09 p.m.

2 stops13h 49m

C$ 995

St. John'sLondon

YYT - LHR

YYTLHR

St John's

Mon 29/9

7:25 a.m.-9:00 p.m.

1 stop10h 05m

London Heathrow

Fri 17/10

12:40 p.m.-10:23 p.m.

1 stop13h 13m

C$ 1,009

St. John'sLondon

YYT - LHR

YYTLHR

St John's

Fri 10/10

7:25 a.m.-9:00 p.m.

1 stop10h 05m

London Heathrow

Wed 15/10

9:30 a.m.-10:23 p.m.

2 stops16h 23m

C$ 1,010

St. John'sLondon

YYT - LHR

YYTLHR

St John's

Tue 18/11

7:30 a.m.-8:35 p.m.

1 stop9h 35m

London Heathrow

Sun 23/11

1:25 p.m.-12:56 a.m.

1 stop15h 01m

C$ 1,010

St. John'sLondon

YYT - LHR

YYTLHR

St John's

Sun 28/9

5:55 p.m.-9:35 a.m.

1 stop12h 10m

London Heathrow

Mon 13/10

9:30 a.m.-12:39 a.m.

1 stop18h 39m

C$ 1,012

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/9

Showing 1-10 of 17 results
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Best time to book a flight from St. John's to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from St. John's with our price prediction graph.
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 St. John's to London Heathrow Airport

What is the cheapest month to book a flight from St. John's to London Heathrow Airport?

Currently, January is the cheapest month in which you can book a flight from St. John's to London Heathrow Airport (average of C$ 560). Flying from St. John's to London Heathrow Airport in July is currently the most expensive (average of C$ 856). 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 YYT to LHR?

Find hourly flight availability from St. John's 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 11 September 2025.

A simple way to save on the total cost of your ticket is to fly from St. John's to London Heathrow Airport in the evening. If you’re flexible enough to do this you can expect to save up to 33% on your trip compared to booking a flight at noon.

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 11 September 2025.
Read reviews from past customers who have flown Air Canada from St. John's to London Heathrow Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Entertainment

6.8

Food

6.3

Boarding

7.3

Comfort

7.1

Overall

7.1

Crew

7.8

Reviews

1 / 20
8.0
Excellent

Graeme,Sep 2025

YWG - YVR

Why not start boarding from the higher seat numbers? Easier movement for everyone. Easier to put baggage in over head lockers. Unable to get a coffee due to air turbulence, but not offered the chance to have a coffee once it had ceased.

Entertainment

6.8

Food

6.3

Boarding

7.3

Comfort

7.1

Overall

7.1

Crew

7.8

Reviews

1 / 20
8.0
Excellent

Graeme,Sep 2025

YWG - YVR

Why not start boarding from the higher seat numbers? Easier movement for everyone. Easier to put baggage in over head lockers. Unable to get a coffee due to air turbulence, but not offered the chance to have a coffee once it had ceased.

Related info for your journey

Find useful and relevant information for your journey from St. John's 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 St. John's to London Heathrow?

    Most people fly from St John's (YYT) if they book a flight from St. John's to London Heathrow. On average, St John's has 0 outbound flights to London Heathrow per day from 1 airline. St John's is conveniently located just 6.7 km from St. John's’s city centre.

  • How long is the flight from St. John's to London Heathrow Airport?

    Air Canada can get you from St. John's to London Heathrow Airport in just under 14h 15m. Your travel time can differ by up to . There are 3713 km between St. John's and London Heathrow Airport.

  • What is the cheapest airline to fly from St. John's to London Heathrow Airport round-trip?

    Flying on Air Canada is currently your cheapest option to London Heathrow Airport, with prices starting at C$ 913. Air Canada is 23% cheaper than the average price of flights available within the next 90 days to this destination.

  • Can I find deals for flights from St. John's to Heathrow that include hotel bookings?

    Yes. In addition to deals on St. John's to Heathrow flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. John's to Heathrow?

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

  • Can I find deals for business class flights from St. John's to Heathrow?

    Yes. Cheapflights offers flight deals from St. John's 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 St. John's to London Heathrow Airport?

    Currently, January is the cheapest month in which you can book a flight from St. John's to London Heathrow Airport (average of C$ 560). Flying from St. John's to London Heathrow Airport in July is currently the most expensive (average of C$ 856). 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
Brentford
Sutton
Hounslow
Slough
Marlow
Leamington Spa
Milton Keynes
Romford
Watford
Bedford
Luton
Southall

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Alternative routes for St. John's to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from St. John's to Heathrow

Discover the top airline that operate flights from St. John's 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 629,999 searches. Data last updated 11 September 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 913AverageC$ 1,109FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

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Can Cheapflights notify me if prices for flights from St. John's to Heathrow become cheaper?

Yes, Cheapflights offers price alerts on St. John's to Heathrow flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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