How long is the flight from Saint John to London?

Airlines like Air Canada fly from Saint John to London in about 16h 05m. The time it takes to get you to your destination can typically vary by up to . Saint John and London are separated by a distance of 4712 km.

In terms of precipitation, rainfall in London 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 when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London, 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).

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

When flying from Saint John to London, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

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

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

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

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

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

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

Yes. Cheapflights offers flight deals from St John to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

C$ 779+ Cheap Flights from Saint John to London

Cheap flight deals from St John to London

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

Cheapest flights from St John to London
Explore the most affordable flight options available from St John to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 9 October 2026.

Wed 11/1111:05 a.m. -

1 stop16h 05m

Wed 18/116:00 a.m. -

2 stops32h 19m

Deal found 7/10C$ 1,125

Wed 14/104:40 p.m. -

2 stops20h 25m

Wed 28/106:50 a.m. -

2 stops30h 29m

Deal found 5/10C$ 1,133

Wed 14/105:00 a.m. -

2 stops36h 00m

Wed 28/106:50 a.m. -

2 stops30h 29m

Deal found 7/10C$ 1,145

Tue 13/104:40 p.m. -

2 stops33h 15m

Tue 27/104:20 p.m. -

2 stops44h 59m

Deal found 5/10C$ 1,155

Tue 13/104:40 p.m. -

1 stop9h 50m

Tue 27/106:00 p.m. -

2 stops43h 19m

Deal found 5/10C$ 1,224

Thu 5/1111:05 a.m. -

2 stops17h 25m

Mon 9/119:00 a.m. -

2 stops29h 19m

Deal found 5/10C$ 1,301

Find flight deals from St John to London

Round-trip from	C$ 1,125
One-way from	C$ 779

Air Canada
11/11-18/11
3 total stops
48h 24m total
Saint John to London

Search Deals

Air Canada
19/11-31/12
2 total stops
45h 50m total
Saint John to London

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Saint JohnLondon

YSJ Saint John - LHR London Heathrow

YSJLHR

Saint John

Thu 19/11

5:20 a.m.-7:10 a.m.

2 stops45h 50m

London Heathrow

Wed 31/12

12:00 a.m.-7:00 p.m.

Nonstop0h 00m

C$ 779

Saint JohnLondon

YSJ Saint John - LHR London Heathrow

YSJLHR

Saint John

Wed 11/11

11:05 a.m.-7:10 a.m.

1 stop16h 05m

London Heathrow

Wed 18/11

6:00 a.m.-10:19 a.m.

2 stops32h 19m

C$ 1,125

Saint JohnLondon

YSJ Saint John - LHR London Heathrow

YSJLHR

Saint John

Wed 20/1

11:05 a.m.-8:05 a.m.

2 stops17h 00m

London Heathrow

Fri 29/1

9:00 a.m.-10:25 a.m.

2 stops29h 25m

C$ 1,127

Saint JohnLondon

YSJ Saint John - LHR London Heathrow

YSJLHR

Saint John

Sat 21/11

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

2 stops56h 20m

London Heathrow

Wed 31/12

12:00 a.m.-7:00 p.m.

Nonstop0h 00m

C$ 1,135

Saint JohnLondon

YSJ Saint John - LHR London Heathrow

YSJLHR

Saint John

Mon 18/1

11:05 a.m.-7:10 a.m.

1 stop16h 05m

London Heathrow

Fri 22/1

6:00 a.m.-11:54 p.m.

2 stops21h 54m

C$ 1,144

Quickest round-trip

Saint JohnLondon

YSJ Saint John - LHR London Heathrow

YSJLHR

Saint John

Mon 14/12

11:05 a.m.-8:05 a.m.

2 stops17h 00m

London Heathrow

Wed 31/12

12:00 a.m.-7:00 p.m.

Nonstop0h 00m

C$ 1,150

Saint JohnLondon

YSJ Saint John - LHR London Heathrow

YSJLHR

Saint John

Mon 18/1

11:05 a.m.-5:55 a.m.

2 stops38h 50m

London Heathrow

Fri 22/1

12:00 p.m.-10:25 a.m.

2 stops26h 25m

C$ 1,170

Saint JohnLondon

YSJ Saint John - LHR London Heathrow

YSJLHR

Saint John

Thu 5/11

11:05 a.m.-8:30 a.m.

2 stops17h 25m

London Heathrow

Mon 9/11

9:00 a.m.-10:19 a.m.

2 stops29h 19m

C$ 1,301

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/10

Sorted by cheapest first

Best time to book a flight from St John to London

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

YSJ-LON

YSJ-LHR

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 Saint John to London

YSJ-LON

YSJ-LHR

No data available for this route at this time. Please check back soon.

Reviews of airlines servicing London

Check out reviews from past customers who have flown with Air Canada from Saint John to London to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Air Canada

7.1

Good

11,745 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Hazel,Sep 2026

YYC - FRA

Air Canada cancelled our flight and rebooked us on Lufthansa, where we had to pay for checked luggage. We originally chose Air Canada because our Aeroplan credit card includes a free checked bag. It’s frustrating to face an extra charge because of a change we didn’t choose.

Air Canada

7.1

Good

11,745 reviews

Air Canada

7.1

Good

11,745 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Hazel,Sep 2026

YYC - FRA

Related info for your journey

What airport do you fly from for flights from Saint John to London?
Located just 15.1 km from the city centre, Saint John is the airport most travellers will use when flying to London from Saint John. Booking flights from Saint John (YSJ) to London should be relatively easy as there are 0 daily outbound flights to London from 1 airline.
How long is the flight from Saint John to London?
Airlines like Air Canada fly from Saint John to London in about 16h 05m. The time it takes to get you to your destination can typically vary by up to . Saint John and London are separated by a distance of 4712 km.
Can I find deals for flights from St John to London that include hotel bookings?
Yes. In addition to deals on St John to London flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from St John to London?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St John to London.
Can I find deals for business class flights from St John to London?
Yes. Cheapflights offers flight deals from St John to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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Top airline flying from St John to London

Airline	Cheapest	Average	Flexibility	On-time
Air Canada	CheapestC$ 1,319	AverageC$ 1,492	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights

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

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to London from St John today with Cheapflights!

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

Cheapflights simply makes it quick and affordable to book flights from St John to London by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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

Certainly. Search results for flights to London from St John shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Of course! You can now track prices for flights from St John to London and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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Cheap flights from Saint John to London from C$ 779

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 19/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from St John to London

Cheapest flights from St John to LondonExplore the most affordable flight options available from St John to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 9 October 2026.

Explore the most affordable flight options available from St John to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 9 October 2026.

Best flights from St John to LondonDiscover carefully curated flight deals from St John to London that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 9 October 2026.

Discover carefully curated flight deals from St John to London that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 9 October 2026.

Last-minute flights from St John to LondonDiscover last-minute flight deals from St John to London. Data last updated 9 October 2026 and is based on user searches.

Discover last-minute flight deals from St John to London. Data last updated 9 October 2026 and is based on user searches.

One-way flights from St John to LondonSearch for one-way flight options from St John to London. Find affordable one-way fares based on user searches. Data last updated 9 October 2026.

Search for one-way flight options from St John to London. Find affordable one-way fares based on user searches. Data last updated 9 October 2026.

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Use the filters below to find and compare flights from Saint John to London that are best for you.

Best time to book a flight from St John to London

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

Cheapflights Insights

Reviews of airlines servicing London

Check out reviews from past customers who have flown with Air Canada from Saint John to London to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

How long is the flight from Saint John to London?

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

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

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

Travelling to a place near London?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for St John to London

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

Complete your trip

Complete your trip to London by adding a car rental and/or hotel reservation to your travel itinerary.

Direct flights to England

Book a non-stop flight to one of these other cities located in England.

Search flights from St John to London by cabin class

Find flights from St John to London, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Other flights to London

Explore flights to London departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 9 October 2026.

St John and London flights

Browse other St John and London flight options. Last updated on 9 October 2026.

Other flights from St John

Browse through other flights departing from St John. Flights are based on user searches made on Cheapflights and were last updated on 9 October 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

Top airline flying from St John to London

Fly with Cheapflights

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

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

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

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

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Cheapest flights from St John to London
Explore the most affordable flight options available from St John to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 9 October 2026.

Best flights from St John to London
Discover carefully curated flight deals from St John to London that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 9 October 2026.

Last-minute flights from St John to London
Discover last-minute flight deals from St John to London. Data last updated 9 October 2026 and is based on user searches.

One-way flights from St John to London
Search for one-way flight options from St John to London. Find affordable one-way fares based on user searches. Data last updated 9 October 2026.