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Cheap flights from Saint John to London from C$ 699

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Saint John to London departing on 27/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Saint John to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
4:15 p.m. - 7:10 a.m.YSJ-LHR
10h 55m1 stop
Air Canada Logo
12:05 p.m. - 3:35 p.m.LHR-YSJ
55h 30m2 stops
C$ 1,002Air Canada
Find Deal
Fri, 16 Jan - Mon, 26 Jan
Air Canada Logo
4:15 p.m. - 7:10 a.m.YSJ-LHR
10h 55m1 stop
Air Canada Logo
12:05 p.m. - 3:35 p.m.LHR-YSJ
55h 30m2 stops
C$ 1,003Air Canada
Find Deal
Fri, 16 Jan - Mon, 26 Jan
Air Canada Logo
4:15 p.m. - 9:20 a.m.YSJ-LHR
13h 05m2 stops
Air Canada Logo
1:45 p.m. - 11:29 p.m.LHR-YSJ
37h 44m2 stops
C$ 1,010Air Canada
Find Deal
Fri, 20 Feb - Tue, 24 Feb
Air Canada Logo
4:15 p.m. - 9:20 a.m.YSJ-LHR
13h 05m2 stops
Air Canada Logo
9:00 a.m. - 11:29 p.m.LHR-YSJ
18h 29m2 stops
C$ 1,012Air Canada
Find Deal
Fri, 20 Feb - Tue, 24 Feb
Air Canada Logo
4:15 p.m. - 9:20 a.m.YSJ-LHR
13h 05m2 stops
Air Canada Logo
6:50 a.m. - 3:35 p.m.LHR-YSJ
12h 45m2 stops
C$ 1,013Air Canada
Find Deal
Fri, 16 Jan - Mon, 26 Jan
Air Canada Logo
5:40 a.m. - 6:30 a.m.YSJ-LHR
20h 50m1 stop
Air Canada Logo
9:00 a.m. - 11:29 p.m.LHR-YSJ
18h 29m2 stops
C$ 1,020Air Canada
Find Deal
Fri, 20 Feb - Tue, 24 Feb
Air Canada Logo
5:40 a.m. - 8:30 a.m.YSJ-LHR
22h 50m1 stop
Air Canada Logo
9:00 a.m. - 11:29 p.m.LHR-YSJ
18h 29m2 stops
C$ 1,022Air Canada
Find Deal
Fri, 20 Feb - Tue, 24 Feb
Air Canada Logo
4:15 p.m. - 7:10 a.m.YSJ-LHR
10h 55m1 stop
Air Canada Logo
1:25 p.m. - 3:35 p.m.LHR-YSJ
30h 10m1 stop
C$ 1,027Air Canada
Find Deal
Fri, 16 Jan - Mon, 26 Jan
Multiple Airlines Logo
4:15 p.m. - 7:10 a.m.YSJ-LHR
10h 55m1 stop
Multiple Airlines Logo
6:50 a.m. - 3:33 p.m.LHR-YSJ
12h 43m2 stops
C$ 1,173Multiple Airlines
Find Deal
Sun, 14 Dec - Thu, 1 Jan
Multiple Airlines Logo
4:15 p.m. - 11:20 a.m.YSJ-LHR
15h 05m2 stops
Multiple Airlines Logo
6:50 a.m. - 3:33 p.m.LHR-YSJ
12h 43m2 stops
C$ 1,184Multiple Airlines
Find Deal
Sun, 14 Dec - Thu, 1 Jan

Air Canada flights from Saint John to London Heathrow Airport

Our best Air Canada deals on Saint John to London Heathrow Airport flight tickets
Air Canada
16 Jan
YSJ4:15 p.m.Saint John
10h 55m
1 stop
LHR7:10 a.m.London Heathrow
26 Jan
LHR12:05 p.m.London Heathrow
55h 30m
2 stops
YSJ3:35 p.m.Saint John
C$ 1,002
Find similar
Air Canada
16 Jan
YSJ4:15 p.m.Saint John
10h 55m
1 stop
LHR7:10 a.m.London Heathrow
26 Jan
LHR12:05 p.m.London Heathrow
55h 30m
2 stops
YSJ3:35 p.m.Saint John
C$ 1,003
Find similar
Air Canada
20 Feb
YSJ4:15 p.m.Saint John
13h 05m
2 stops
LHR9:20 a.m.London Heathrow
24 Feb
LHR1:45 p.m.London Heathrow
37h 44m
2 stops
YSJ11:29 p.m.Saint John
C$ 1,010
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Saint John to London Heathrow Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 96,600 searches. Data last updated 14 October 2025.
Use the filters below to find and compare flights from Saint John to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Fri 16/1

4:15 p.m.-7:10 a.m.

1 stop10h 55m

London Heathrow

Mon 26/1

12:05 p.m.-3:35 p.m.

2 stops55h 30m

C$ 1,002

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Fri 16/1

4:15 p.m.-7:10 a.m.

1 stop10h 55m

London Heathrow

Mon 26/1

12:05 p.m.-3:35 p.m.

2 stops55h 30m

C$ 1,003

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Fri 20/2

4:15 p.m.-9:20 a.m.

2 stops13h 05m

London Heathrow

Tue 24/2

1:45 p.m.-11:29 p.m.

2 stops37h 44m

C$ 1,010

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Fri 20/2

4:15 p.m.-9:20 a.m.

2 stops13h 05m

London Heathrow

Tue 24/2

9:00 a.m.-11:29 p.m.

2 stops18h 29m

C$ 1,012

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Fri 16/1

4:15 p.m.-9:20 a.m.

2 stops13h 05m

London Heathrow

Mon 26/1

6:50 a.m.-3:35 p.m.

2 stops12h 45m

C$ 1,013

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Fri 20/2

5:40 a.m.-6:30 a.m.

1 stop20h 50m

London Heathrow

Tue 24/2

9:00 a.m.-11:29 p.m.

2 stops18h 29m

C$ 1,020

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Fri 20/2

5:40 a.m.-8:30 a.m.

1 stop22h 50m

London Heathrow

Tue 24/2

9:00 a.m.-11:29 p.m.

2 stops18h 29m

C$ 1,022

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Fri 16/1

4:15 p.m.-7:10 a.m.

1 stop10h 55m

London Heathrow

Mon 26/1

1:25 p.m.-3:35 p.m.

1 stop30h 10m

C$ 1,027

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Sun 14/12

4:15 p.m.-7:10 a.m.

1 stop10h 55m

London Heathrow

Thu 1/1

6:50 a.m.-3:33 p.m.

2 stops12h 43m

C$ 1,173

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Sun 14/12

4:15 p.m.-11:20 a.m.

2 stops15h 05m

London Heathrow

Thu 1/1

6:50 a.m.-3:33 p.m.

2 stops12h 43m

C$ 1,184

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Saint John to London Heathrow Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to London Heathrow Airport?

According to our data, Wednesday is the cheapest day to fly to London Heathrow Airport from Saint John. The lowest ticket price found for a Wednesday departure recently was C$ 1,225. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. When flying out on a Tuesday, the most expensive travel day of the week, you can expect to see flight prices from Saint John to London Heathrow Airport for around C$ 1,440.

When to book flights from Saint John to London Heathrow Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Saint John to London Heathrow Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Saint John to London Heathrow Airport (YSJ to LHR) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Saint John to London Heathrow Airport

Direct flights

None
There are no direct flights from Saint John to London Heathrow Airport. There are no popular flight routes from Saint John to London Heathrow Airport.
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  • How far is Saint John to London Heathrow by plane?

    Saint John and London Heathrow are 4726.9 km apart from one another. By plane, this route typically takes 10h 55m.

  • When did momondo last update prices for flights from Saint John Airport to London Heathrow Airport?

    Prices for flights from Saint John Airport to London Heathrow Airport were last updated today.

  • How many operators does momondo search for flights from Saint John Airport to London Heathrow Airport?

  • How old do you have to be to fly from Saint John Airport to London Heathrow Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Saint John Airport to London Heathrow Airport.

  • What documentation or ID do you need to fly to London Heathrow Airport?

    The travel and health documents required for your trip to London Heathrow Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at London Heathrow Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Saint John to London Heathrow Airport?

Best airlines flying from Saint John to London Heathrow Airport

Compare and see reviews for airlines that fly from Saint John to London Heathrow Airport with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom C$ 1,170Free CancellationRating
7.1
10,297 reviews
Search Air Canada flights

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Why use momondo?

Why should I use momondo to find a flight deal from Saint John to London?

Finding the right flight to London from Saint John is quick and easy when you have a range of options in front of you, from reputable agents and recognizable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to London quick and easy, saving you time and money.

Can I find flights from Saint John to London with flexible booking policies on momondo?

momondo does allow users to show only those flights to London from Saint John which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Saint John to London?

Once you have performed a search for Saint John to London flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Saint John to London right now. Can momondo alert me if prices change?

Price alerts on flights to London from Saint John are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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