LHR - YSJ

Find Cheap Flights from London Heathrow Airport to Saint John

1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Saint John

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Saint John, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Saint John, as well as popular online travel agencies
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Everything you should know

Direct flights
Not available
There are currently no direct flights between Heathrow and Saint John. You’ll need at least 1 connection.
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Top stopover airports
Cheapest • Avg £603 (return)
Shortest trip • 10h 11m (one-way)
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We hope you love your trip to Saint John!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Heathrow to Saint John (LHR-YSJ)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Heathrow to Saint John that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Heathrow to Saint John

Multiple Airlines Logo
LHR
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YSJ
2928 mimulti-stop
Multiple Airlines Logo
YSJ
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LHR
2928 mimulti-stop
Multiple Airlines
Booking Insights

KAYAK’s insights & trends for Heathrow to Saint John flights

Get data-powered insights and trends into flights from Heathrow to Saint John to help you find the cheapest flights, the best time to fly and much more.

What is the most popular stopover airport when flying from London Heathrow Airport to Saint John?

Percentage of one-stop return flights from London Heathrow Airport to Saint John chosen by KAYAK users via each stopover airport in the last 12 months (only includes trips with the same stopover airport on both legs).

Montreal (YUL) is the top choice – 50% of KAYAK users who clicked on one-stop flights from London Heathrow Airport to Saint John picked an itinerary connecting there.

What is the cheapest stopover airport when flying from London Heathrow Airport to Saint John?

Average return price for one-stop flights from London Heathrow Airport to Saint John clicked by KAYAK users in the last 12 months (only includes trips with the same stopover airport for both legs).

Flights via Toronto (YYZ) offer the most affordable fares, with an average price of £603 for a return.

Which stopover airport offers the shortest total travel time from London Heathrow Airport to Saint John?

Shortest average total travel time for one-stop one-way flights from London Heathrow Airport to Saint John via different stopover airports, based on KAYAK user data from the last 12 months.

Consider flying via Montreal (YUL) for the shortest journey. The average one-way travel time for flights connecting there is 10h 11m.

Which stopover airport has the quickest connection when flying from London Heathrow Airport to Saint John?

Average duration at different stopover airports for one-stop one-way flights from London Heathrow Airport to Saint John, based on KAYAK user data from the last 12 months.

If you prefer a quick connection, Montreal (YUL) often has the shortest stopovers from London Heathrow Airport to Saint John, with an average time of 1h 35m.

When to book flights from Heathrow to Saint John

Are your dates flexible? Find out the best times to travel from Heathrow to Saint John based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking London Heathrow Airport to Saint John flights

  • Which aircraft models fly most regularly from London Heathrow Airport to Saint John?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from London Heathrow Airport to Saint John?

    Star Alliance is the only airline alliance operating flights between London Heathrow Airport and Saint John.

  • How does KAYAK find such low prices on flights from London Heathrow Airport to Saint John?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from London Heathrow Airport to Saint John.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from London Heathrow Airport to Saint John?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Saint John from London Heathrow Airport is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from London Heathrow Airport to Saint John?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Saint John with an airline and back to London Heathrow Airport with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London Heathrow Airport to Saint John?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Saint John from London Heathrow Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Heathrow to Saint John

 
See real verified KAYAK customer reviews for airlines flying from London to Saint John. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Heathrow to Saint John? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.1
Air CanadaOverall score based on 11194 reviews
7.3Boarding
7.8Crew
7.1Comfort
6.3Food
6.8Entertainment
Airline reviews

1didnt have wheel chair I ordered wheel chair in my ticket flight

10.0 ExcellentBoujemaa, Jun 2026
DEN - YUL
Read more Air Canada reviews

1didnt have wheel chair I ordered wheel chair in my ticket flight

the snack at the end was an improvement of previous flights of a year ago . crew were responsive and gave good service

We travelled from London to Halifax. Customer service was excellent.fron the day we booked until arriving. The gate was only a short frombthe waiting area and walk Boarding was efficiently handled and plane took off on time. The service on the plane was very good. Fool an acceptable drandard Only downside was that the legroom was tight for anybody just over 6ft tall and am usually able to travel without difficulty. I will definitely fly with Air Canada again but next time pay for extr space.

Was disappointed when landing in Canada was made to wait for over 1 hour with several other parents and babies for our strollers . The expectation was that the gate checked strollers would be there when exiting aircraft. This was not the case we were told to walk to a point and wait for them . After being left there and not being updated we were met with very hostile and rude air canada staff . There where no apologies or understanding even though all the children where very uncomfortable and the parents very frustrated as you can imagine . Instead the air canada staff at the airport where very rude and made an already frustrating situation much worse instead of trying to assure the parents that that were making effort to fix the situation. One gentleman in particular was very rude to some parents telling them to move when they were simply seeking information. He made the other parents including myself feel very uncomfortable. He also told a gentleman he was capturing images of everyones boarding pass when this was untrue as he was only taking a photo of the gentleman pass which was strange.

It was good, seating was a little tight apart from that all was well.

I liked the flight but the check in was horrendous. I have booked with you before but not ever had to pay extra for luggage, it was not clear on booking, I didn't know there was different categories of economy that meant different allowances. So was alarmed when we had to pay a further £120 at the check-in at a point of not changing.

I wish they gave the earphones earlier rather than when we are already in flight.

Just a two hour flight... boarding was smooth and easy going... flight was smooth... crew very helpful... snack of pretzels was awful, that needs changed...

Very nice staff members are very nice and friendly helpful

It was good. The tray on the seat was not cleaned from the previous flight. The seats are tight but I had no one beside me. The crew was great.

Everything you need to know for your flight from Heathrow to Saint John

Information on your arrival and departure airports