What is the cheapest airline that flies from Saint John to London Heathrow?

Air Canada is the most popular carrier operating from Saint John to London Heathrow

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?

There is 1 operator available for flights from Saint John Airport to London Heathrow Airport as of December 2025.

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.

C$ 1,080 Cheap Flights from Saint John to London Heathrow Airport in 2025/26

1 adult

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Find the cheapest flights from Saint John to London

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Cheap round-trip flights

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

YSJ

LHR

10h 55m1 stop

12:05 p.m. - 11:29 p.m.

LHR

YSJ

39h 24m2 stops

C$ 1,082Air Canada

Fri, 23 Jan - Tue, 27 Jan

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

YSJ

LHR

10h 55m1 stop

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

LHR

YSJ

18h 29m2 stops

C$ 1,085Air Canada

Sat, 17 Jan - Sat, 24 Jan

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

YSJ

LHR

13h 05m2 stops

6:50 a.m. - 3:40 p.m.

LHR

YSJ

12h 50m2 stops

C$ 1,087Air Canada

Fri, 23 Jan - Tue, 27 Jan

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

YSJ

LHR

13h 05m2 stops

6:50 a.m. - 3:40 p.m.

LHR

YSJ

12h 50m2 stops

C$ 1,089Air Canada

Fri, 23 Jan - Tue, 27 Jan

5:40 a.m. - 7:10 a.m.

YSJ

LHR

21h 30m2 stops

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

LHR

YSJ

18h 29m2 stops

C$ 1,093Air Canada

Sat, 17 Jan - Sat, 24 Jan

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

YSJ

LHR

10h 55m1 stop

11:10 a.m. - 11:29 p.m.

LHR

YSJ

16h 19m1 stop

C$ 1,105Air Canada

Fri, 23 Jan - Tue, 27 Jan

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

YSJ

LHR

10h 55m1 stop

1:00 p.m. - 10:39 a.m.

LHR

YSJ

25h 39m1 stop

C$ 1,108Air Canada

Sat, 17 Jan - Sat, 24 Jan

4:30 p.m. - 8:35 a.m.

YSJ

LHR

12h 05m2 stops

12:40 p.m. - 3:50 p.m.

LHR

YSJ

31h 10m2 stops

C$ 1,170Air Canada

Sat, 30 May - Mon, 15 Jun

12:20 p.m. - 11:50 a.m.

YSJ

LHR

19h 30m1 stop

2:05 p.m. - 3:50 p.m.

LHR

YSJ

29h 45m1 stop

C$ 1,174Air Canada

Sat, 30 May - Mon, 15 Jun

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

YSJ

LHR

10h 55m1 stop

11:10 a.m. - 11:29 p.m.

LHR

YSJ

16h 19m1 stop

C$ 1,206Air Canada

Fri, 23 Jan - Tue, 27 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

23 Jan

YSJ4:15 p.m.Saint John

10h 55m

1 stop

LHR7:10 a.m.London Heathrow

27 Jan

LHR12:05 p.m.London Heathrow

39h 24m

2 stops

YSJ11:29 p.m.Saint John

C$ 1,082

Find similar

Air Canada

17 Jan

YSJ4:15 p.m.Saint John

10h 55m

1 stop

LHR7:10 a.m.London Heathrow

24 Jan

LHR9:00 a.m.London Heathrow

18h 29m

2 stops

YSJ11:29 p.m.Saint John

C$ 1,084

Find similar

Air Canada

23 Jan

YSJ4:15 p.m.Saint John

13h 05m

2 stops

LHR9:20 a.m.London Heathrow

27 Jan

LHR6:50 a.m.London Heathrow

12h 50m

2 stops

YSJ3:40 p.m.Saint John

C$ 1,087

Find similar

momondo Fare Finder

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 23/1

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

1 stop10h 55m

London Heathrow

Tue 27/1

12:05 p.m.-11:29 p.m.

2 stops39h 24m

C$ 1,082

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Sat 17/1

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

1 stop10h 55m

London Heathrow

Sat 24/1

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

2 stops18h 29m

C$ 1,084

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Fri 23/1

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

2 stops13h 05m

London Heathrow

Tue 27/1

6:50 a.m.-3:40 p.m.

2 stops12h 50m

C$ 1,087

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Fri 23/1

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

2 stops13h 05m

London Heathrow

Tue 27/1

6:50 a.m.-3:40 p.m.

2 stops12h 50m

C$ 1,089

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Sat 17/1

5:40 a.m.-7:10 a.m.

2 stops21h 30m

London Heathrow

Sat 24/1

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

2 stops18h 29m

C$ 1,093

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Fri 23/1

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

1 stop10h 55m

London Heathrow

Tue 27/1

11:10 a.m.-11:29 p.m.

1 stop16h 19m

C$ 1,105

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Sat 17/1

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

1 stop10h 55m

London Heathrow

Sat 24/1

1:00 p.m.-10:39 a.m.

1 stop25h 39m

C$ 1,108

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Sat 30/5

4:30 p.m.-8:35 a.m.

2 stops12h 05m

London Heathrow

Mon 15/6

12:40 p.m.-3:50 p.m.

2 stops31h 10m

C$ 1,170

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Sat 30/5

12:20 p.m.-11:50 a.m.

1 stop19h 30m

London Heathrow

Mon 15/6

2:05 p.m.-3:50 p.m.

1 stop29h 45m

C$ 1,174

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Fri 23/1

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

1 stop10h 55m

London Heathrow

Tue 27/1

11:10 a.m.-11:29 p.m.

1 stop16h 19m

C$ 1,206

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first

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

Prices

Airlines

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$ 1,206. 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$ 1,418.

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

Fastest flight time	12h 05m
Direct flights	None

The fastest flight from Saint John to London Heathrow Airport takes 12h 05m

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.

Search flight deals

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 12h 05m.
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?
There is 1 operator available for flights from Saint John Airport to London Heathrow Airport as of December 2025.
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?
Based on momondo bookings for flights between Saint John and London Heathrow Airport, the leading airline is Air Canada, making up 100% of the total bookings.

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 Canada	PriceFrom C$ 1,152	Free Cancellation	Rating 7.1 10,551 reviews		Search Air Canada flights

Hounslow

Ipswich

Poole

Dartford

Gatwick

Ilford

Swindon

Chelmsford

Wokingham

Slough

Stratford-upon-Avon

Feltham

Hayes

Uxbridge

Wembley

Waterlooville

Newport

Basingstoke

Milton Keynes

Dover

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.

An easier way to manage your London Heathrow Airport trip

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Wed 28/1

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Cheap flights from Saint John to London from C$ 1,080

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 15/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

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Price Alerts

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Find the cheapest flights from Saint John to London

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Air Canada flights from Saint John to London Heathrow Airport

Our best Air Canada deals on Saint John to London Heathrow Airport flight tickets

momondo Fare Finder

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

See travel insights to London from

How to get the cheapest flight ticket from Saint John to London Heathrow Airport

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

What is the cheapest airline that flies from Saint John to London Heathrow?

Air Canada is the most popular carrier operating from Saint John to London Heathrow

When to book flights from Saint John to London Heathrow Airport

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

Fastest flight time

Direct flights

How far is Saint John to London Heathrow by plane?

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

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?

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

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

Travelling to a place near London?

Why use momondo?

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

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

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

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

An easier way to manage your London Heathrow Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to London

Popular Cities in the United Kingdom

Popular flights according to clicks in the last 7 days on momondo