LHR - YSJ

Find Cheap Flights from London Heathrow Airport to Saint John

1 adult
1 adult, Economy

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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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-YSJ
2928 mimulti-stop
Multiple Airlines Logo
YSJ-LHR
2928 mimulti-stop
Multiple Airlines
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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 £571 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 56m.

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, Toronto (YYZ) often has the shortest stopovers from London Heathrow Airport to Saint John, with an average time of 2h 38m.

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Good to know - Cheap tickets from London Heathrow Airport to Saint John

Low seasonApril
Best time to beat the crowds (20% less expensive on average)
Most popular time to fly (13% more expensive on average)

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.

  • 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 9851 reviews
6.3Food
6.8Entertainment
7.3Boarding
7.8Crew
7.1Comfort
Airline reviews

Staff was not frankly. I asked about what beverages you have and air hostess told me like before so very rude answer.

2.0 MediocreAnonymous, Jul 2025BCN - YYZ
Read more Air Canada reviews

Staff was not frankly. I asked about what beverages you have and air hostess told me like before so very rude answer.

On-time boarding, departure, and flight. Electronic notifications about bags for the whole of their own journey too - from when they got accepted into the system through to being loaded onto the plane and then finally being disgorged onto the right carousel. That was an excellent feature.

I liked that the plane landed safely. I didn't like that the food and leg room is horrible.

Liked getting into Milan at 10 AM. Also ok to get into LAX at 9:35 pm. - less traffic driving home. Layover a bit long - say 3-4 hours each way. Montreal airport kind of grim these days. Would lose the duty free area. Think art versus advertising. Maybe local shops and food spots. And keep layover short - like 1 hour on Finnair in Helsinki.

Flying in the Dreamliner is always comfortable. Though the food options for Air Canada aren't great.

Everything could have been better from the planes not being delayed to the rudeness of staff to it was just horrible will not use kayak again or Air Canada I can't see what would ever change my mind now

I wish someone would wake me up so I could eat the free food :( slept for 90mins on a 10hr flight and I missed breakfast. I’m sad about that lol.

Business class was not worth the extra charge. Overpriced for slightly larger seat. Nothing special. Small older plane.

Both flights are delayed so I rate the whole experience as mediocre.

Bad experience flying with air Canada . Seats not comfortable . Checked bag was delayed and was bought home next day by airport employee. Had to buy toiletries since bag was delayed . No compensation was even suggested . Will not fly air canada again

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

Information on your arrival and departure airports

London Heathrow Airport (LHR)
Saint John (YSJ)

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