Question 1

What are the cheapest airlines flying from Saint John to London Heathrow Airport round-trip?

Accepted Answer

According to our current data, United Airlines (C$ 997), and Air Canada (C$ 1,214) offers the cheapest pricing from Saint John to London Heathrow Airport. Users have found that United Airlines is 17% cheaper than the other options available to this destination.

Question 2

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

Accepted Answer

Currently, January is the cheapest month in which you can book a flight from Saint John to London Heathrow Airport (average of C$ 560). Flying from Saint John to London Heathrow Airport in July is currently the most expensive (average of C$ 857). 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.

Question 3

What is the cheapest day to fly from Saint John to London Heathrow Airport?

Accepted Answer

Travelers seeking maximum savings on their Saint John to London Heathrow Airport flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Tuesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Question 4

E

Accepted Answer

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 mm per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

Question 5

E

Accepted Answer

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

Question 6

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

Accepted Answer

Users have found that flying from Saint John to London Heathrow Airport on a Monday typically leans towards higher prices. However, this doesn’t mean you still can’t find a deal. Flexibility with other aspects of your flight can still land a great price for your trip.

Question 7

What is the cheapest month to fly from Saint John to London Heathrow Airport?

Accepted Answer

March is one of the best times of the year to fly to London Heathrow Airport from Saint John. Prices for March average C$ 1,243 per person but you can even find prices for as low as C$ 1,073. The most expensive prices can be found in the month of December. Opting for a March flight can save you 17% on your journey compared to booking in December

Question 8

What is the cheapest time of day to fly from YSJ to LHR?

Accepted Answer

When flying from Saint John 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.

Question 9

What airport do you fly from for flights from Saint John to London Heathrow?

Accepted Answer

Located just 15.1 km from the city centre, Saint John is the airport most travellers will use when flying to London Heathrow from Saint John. Booking flights from Saint John (YSJ) to London Heathrow should be relatively easy as there are 0 daily outbound flights to London Heathrow from 1 airline.

Question 10

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

Accepted Answer

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

Question 11

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

Accepted Answer

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

Question 12

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

Accepted Answer

Yes. Cheapflights offers flight deals from St John 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.

Question 13

How does Cheapflights help users find flights from St John to Heathrow?

Accepted Answer

Cheapflights makes it easy to find St John to Heathrow flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Question 14

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

Accepted Answer

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Heathrow from St John.

Question 15

Can Cheapflights find flights from St John to Heathrow with no change fees?

Accepted Answer

Users can book flights with no change fees policies with our dedicated filters. Book flights from St John to Heathrow flexibly with Cheapflights today.

Question 16

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

Accepted Answer

Yes! Start tracking prices for St John to Heathrow flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

Round-trip from	C$ 997
One-way from	C$ 579
Popular in	March
Cheapest in	February
Average price	C$ 1,221

Cheap flights from Saint John to London Heathrow Airport from C$ 579

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 10/9. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheapest flights from St John to HeathrowExplore the most affordable flight options available from St John to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 July 2025.

Explore the most affordable flight options available from St John to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 July 2025.

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Best time to book a flight from St John to Heathrow

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Everything you need to know about your flight from Saint John to London Heathrow Airport

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

Reviews of airlines servicing Heathrow

Read reviews from past customers who have flown United Airlines and Air Canada from Saint John 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.

Related info for your journey

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

What are the cheapest airlines flying from Saint John to London Heathrow Airport round-trip?

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

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

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

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

Travelling to a place near London Heathrow Airport?

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Alternative routes for St John to Heathrow

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How does Cheapflights help users find flights from St John to Heathrow?

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

Can Cheapflights find flights from St John to Heathrow with no change fees?

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

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Cheapest flights from St John to Heathrow
Explore the most affordable flight options available from St John to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 July 2025.