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Cheap flights from London Heathrow Airport to Saint John

LHR — YSJ
20 Nov — 27 Nov1
1 adult
1 adult, Economy

Cheap flight deals from Heathrow to St John

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to St John (YSJ). 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 21 October 2025.

Popular in

November

Cheapest in

April

Average price

£598
Highest demand for flights based on searches. 9% potential increase in price (£46 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (£14 potential savings vs. average return price).
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Average for round-trip flights in October 2025
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Best time to book a flight from Heathrow to St John

Have a flexible travel schedule? Discover the best time to fly to St John from Heathrow 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 London Heathrow Airport to Saint John

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

Currently, May is the cheapest month in which you can book a flight from London Heathrow Airport to Saint John (average of £388). Flying from London Heathrow Airport to Saint John in December is currently the most expensive (average of £547). 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.

Reviews of airlines servicing St John

Get insights into the airlines that provide service to St John. 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 St John. Reviews last updated 21 October 2025.
Read reviews from past customers who have flown with Air Canada from London Heathrow Airport to Saint John. 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.
Air Canada
7.1
Good
10,337 reviews
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Comfort

7.1

Overall

7.1

Boarding

7.3

Crew

7.8

Entertainment

6.8

Food

6.3

Reviews

1 / 20
2.0
Mediocre

robert,Sept 2025

YEG - YVR

There was nothing that I liked about air canada. My experience was terrible.
Air Canada
7.1
Good
10,337 reviews
Air Canada
7.1
Good
10,337 reviews
Check prices

Comfort

7.1

Overall

7.1

Boarding

7.3

Crew

7.8

Entertainment

6.8

Food

6.3

Reviews

1 / 20
2.0
Mediocre

robert,Sept 2025

YEG - YVR

There was nothing that I liked about air canada. My experience was terrible.

Related info for your journey

Find useful and relevant information for your journey from Heathrow to St John. 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 into for flights to Saint John from London Heathrow?

    Saint John (YSJ), located 9.4 mi from the city center, is the airport you fly into when you book flights from London Heathrow to Saint John. 1 airline have flights to Saint John from London Heathrow on a regular basis. Booking flights from London Heathrow to Saint John should not be difficult; the airport handles an average of 0 inbound flights from London Heathrow per day.

  • What is the cheapest airline to fly from London Heathrow Airport to Saint John round-trip?

    Cheapflights users have booked flights from London Heathrow Airport to Saint John round-trip from £434. This flight start at 25% lower than the current average price 3 months from now.

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

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

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

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

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

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

    Currently, May is the cheapest month in which you can book a flight from London Heathrow Airport to Saint John (average of £388). Flying from London Heathrow Airport to Saint John in December is currently the most expensive (average of £547). 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.

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Alternative routes for Heathrow to St John

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to Moncton flights
Gatwick to Moncton flights
London City to Moncton flights

Top airline flying from Heathrow to St John

Discover the top airline that operate flights from Heathrow to St John. 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 21 October 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest£434Average£605FlexibilityNo cancel feeOn-time67%
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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 Heathrow to St John?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Heathrow to St John. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

Cheapflights helps you find that perfect flight to St John from Heathrow 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 Heathrow to St John with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Heathrow to St John, users can toggle the no change fees filter when performing a flight search.

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

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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