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 August 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$ 997 Cheap Flights from Saint John to London Heathrow Airport in 2025

1 adult

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Find the cheapest flights from Saint John to London

Round-trip

One-way

Cheap round-trip flights

11:35 a.m. - 6:45 a.m.YSJ-LHR

15h 10m2 stops

9:30 a.m. - 10:49 a.m.LHR-YSJ

29h 19m2 stops

C$ 997United Airlines

Find Deal

Thu, 11 Sep - Thu, 18 Sep

11:35 a.m. - 10:40 a.m.YSJ-LHR

19h 05m2 stops

3:20 p.m. - 10:49 a.m.LHR-YSJ

23h 29m2 stops

C$ 998United Airlines

Find Deal

Sun, 28 Sep - Sun, 5 Oct

5:55 a.m. - 5:55 a.m.YSJ-LHR

20h 00m2 stops

3:20 p.m. - 10:49 a.m.LHR-YSJ

23h 29m2 stops

C$ 1,001United Airlines

Find Deal

Sat, 27 Sep - Sat, 4 Oct

11:35 a.m. - 10:40 a.m.YSJ-LHR

19h 05m2 stops

4:40 p.m. - 12:11 a.m.LHR-YSJ

35h 31m2 stops

C$ 1,006United Airlines

Find Deal

Wed, 10 Sep - Wed, 17 Sep

6:40 p.m. - 10:00 a.m.YSJ-LHR

11h 20m1 stop

6:50 a.m. - 10:49 a.m.LHR-YSJ

31h 59m2 stops

C$ 1,154Air Canada

Find Deal

Sat, 27 Sep - Sat, 4 Oct

6:40 p.m. - 10:00 a.m.YSJ-LHR

11h 20m1 stop

8:30 a.m. - 11:51 p.m.LHR-YSJ

19h 21m1 stop

C$ 1,173Air Canada

Find Deal

Sat, 27 Sep - Sat, 4 Oct

11:35 a.m. - 6:30 a.m.YSJ-LHR

14h 55m1 stop

5:40 p.m. - 10:49 a.m.LHR-YSJ

21h 09m2 stops

C$ 1,205Air Canada

Find Deal

Sun, 28 Sep - Sun, 5 Oct

11:35 a.m. - 9:35 a.m.YSJ-LHR

18h 00m1 stop

2:05 p.m. - 10:49 a.m.LHR-YSJ

24h 44m1 stop

C$ 1,227Air Canada

Find Deal

Wed, 10 Sep - Wed, 17 Sep

11:35 a.m. - 9:35 a.m.YSJ-LHR

18h 00m1 stop

3:50 p.m. - 10:49 a.m.LHR-YSJ

22h 59m2 stops

C$ 1,235Air Canada

Find Deal

Wed, 10 Sep - Wed, 17 Sep

5:55 a.m. - 9:00 p.m.YSJ-LHR

35h 05m3 stops

9:30 a.m. - 11:51 p.m.LHR-YSJ

18h 21m2 stops

C$ 1,447

Find Deal

Sat, 27 Sep - Sat, 4 Oct

United Airlines flights from Saint John to London Heathrow Airport

Our best United Airlines deals on Saint John to London Heathrow Airport flight tickets

United Airlines

11 Sep

YSJ11:35 a.m.Saint John

15h 10m

2 stops

LHR6:45 a.m.London Heathrow

18 Sep

LHR9:30 a.m.London Heathrow

29h 19m

2 stops

YSJ10:49 a.m.Saint John

C$ 997

Find similar

United Airlines

28 Sep

YSJ11:35 a.m.Saint John

19h 05m

2 stops

LHR10:40 a.m.London Heathrow

5 Oct

LHR3:20 p.m.London Heathrow

23h 29m

2 stops

YSJ10:49 a.m.Saint John

C$ 998

Find similar

United Airlines

27 Sep

YSJ5:55 a.m.Saint John

20h 00m

2 stops

LHR5:55 a.m.London Heathrow

4 Oct

LHR3:20 p.m.London Heathrow

23h 29m

2 stops

YSJ10:49 a.m.Saint John

C$ 1,001

Find similar

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

27 Sep

YSJ6:40 p.m.Saint John

11h 20m

1 stop

LHR10:00 a.m.London Heathrow

4 Oct

LHR6:50 a.m.London Heathrow

31h 59m

2 stops

YSJ10:49 a.m.Saint John

C$ 1,154

Find similar

Air Canada

27 Sep

YSJ6:40 p.m.Saint John

11h 20m

1 stop

LHR10:00 a.m.London Heathrow

4 Oct

LHR8:30 a.m.London Heathrow

19h 21m

1 stop

YSJ11:51 p.m.Saint John

C$ 1,173

Find similar

Air Canada

28 Sep

YSJ11:35 a.m.Saint John

14h 55m

1 stop

LHR6:30 a.m.London Heathrow

5 Oct

LHR5:40 p.m.London Heathrow

21h 09m

2 stops

YSJ10:49 a.m.Saint John

C$ 1,205

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

Thu 11/9

11:35 a.m.-6:45 a.m.

2 stops15h 10m

London Heathrow

Thu 18/9

9:30 a.m.-10:49 a.m.

2 stops29h 19m

C$ 997

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Sun 28/9

11:35 a.m.-10:40 a.m.

2 stops19h 05m

London Heathrow

Sun 5/10

3:20 p.m.-10:49 a.m.

2 stops23h 29m

C$ 998

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Sat 27/9

5:55 a.m.-5:55 a.m.

2 stops20h 00m

London Heathrow

Sat 4/10

3:20 p.m.-10:49 a.m.

2 stops23h 29m

C$ 1,001

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Wed 10/9

11:35 a.m.-10:40 a.m.

2 stops19h 05m

London Heathrow

Wed 17/9

4:40 p.m.-12:11 a.m.

2 stops35h 31m

C$ 1,006

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Sat 27/9

6:40 p.m.-10:00 a.m.

1 stop11h 20m

London Heathrow

Sat 4/10

6:50 a.m.-10:49 a.m.

2 stops31h 59m

C$ 1,154

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Sat 27/9

6:40 p.m.-10:00 a.m.

1 stop11h 20m

London Heathrow

Sat 4/10

8:30 a.m.-11:51 p.m.

1 stop19h 21m

C$ 1,173

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Sun 28/9

11:35 a.m.-6:30 a.m.

1 stop14h 55m

London Heathrow

Sun 5/10

5:40 p.m.-10:49 a.m.

2 stops21h 09m

C$ 1,205

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Wed 10/9

11:35 a.m.-9:35 a.m.

1 stop18h 00m

London Heathrow

Wed 17/9

2:05 p.m.-10:49 a.m.

1 stop24h 44m

C$ 1,227

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Wed 10/9

11:35 a.m.-9:35 a.m.

1 stop18h 00m

London Heathrow

Wed 17/9

3:50 p.m.-10:49 a.m.

2 stops22h 59m

C$ 1,235

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Sat 27/9

5:55 a.m.-9:00 p.m.

3 stops35h 05m

London Heathrow

Sat 4/10

9:30 a.m.-11:51 p.m.

2 stops18h 21m

C$ 1,447

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 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$ 1,204. 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$ 1,415.

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

Best price found	C$ 1,141
Fastest flight time	11h 20m
Direct flights	None

The best one-way flight to London Heathrow Airport from Saint John in the past 72 hours is C$ 1,141. The best round-trip flight deal from Saint John to London Heathrow Airport found on momondo in the last 72 hours is C$ 997.

The fastest flight from Saint John to London Heathrow Airport takes 11h 20m

There are no direct flights from Saint John to London Heathrow Airport. Popular non-direct route for this connection is Saint John Airport - 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 11h 20m.
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 August 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$ 1,149	Free Cancellation	Rating 7.1 9,949 reviews		Search Air Canada flights

Hounslow

Ipswich

Poole

Gatwick

Dartford

Canterbury

Crawley

Ilford

Wembley

Maidstone

Swindon

Chelmsford

Wokingham

Stratford-upon-Avon

Feltham

Hayes

Uxbridge

Waterlooville

Newport

Basingstoke

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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Cheap flights from Saint John to London from C$ 997

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Saint John to London departing on 11/9. 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

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Saint John to London

Cheap round-trip flights

Cheap one-way flights

United Airlines flights from Saint John to London Heathrow Airport

Our best United Airlines deals on Saint John to London Heathrow Airport flight tickets

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

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?

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

Best price found

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