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 2026.

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$ 578 Cheap Flights from Saint John to London Heathrow Airport in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Saint John to London

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

4:40 p.m. - 5:55 a.m.YSJ Saint John-LHR London Heathrow

33h 15m2 stops Montreal Pierre Elliott Trudeau Intl Newark

12:00 p.m. - 3:59 p.m.LHR London Heathrow-YSJ Saint John

31h 59m2 stops Newark Montreal Pierre Elliott Trudeau Intl

C$ 1,148United Airlines

Fri, 2 Oct - Sat, 10 Oct

11:05 a.m. - 6:40 a.m.YSJ Saint John-LHR London Heathrow

15h 35m2 stops Montreal Pierre Elliott Trudeau Intl Washington, D.C. Dulles Intl

6:00 p.m. - 10:25 a.m.LHR London Heathrow-YSJ Saint John

44h 25m2 stops Newark Montreal Pierre Elliott Trudeau Intl

C$ 1,148United Airlines

Sun, 29 Nov - Thu, 3 Dec

4:40 p.m. - 6:55 a.m.YSJ Saint John-LHR London Heathrow

34h 15m2 stops Montreal Pierre Elliott Trudeau Intl Washington, D.C. Dulles Intl

2:10 p.m. - 3:59 p.m.LHR London Heathrow-YSJ Saint John

29h 49m2 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl

C$ 1,149United Airlines

Fri, 2 Oct - Sat, 10 Oct

11:05 a.m. - 6:40 a.m.YSJ Saint John-LHR London Heathrow

15h 35m2 stops Montreal Pierre Elliott Trudeau Intl Washington, D.C. Dulles Intl

6:00 p.m. - 10:25 a.m.LHR London Heathrow-YSJ Saint John

44h 25m2 stops Newark Montreal Pierre Elliott Trudeau Intl

C$ 1,149United Airlines

Sun, 29 Nov - Thu, 3 Dec

4:40 p.m. - 8:40 p.m.YSJ Saint John-LHR London Heathrow

24h 00m2 stops Montreal Pierre Elliott Trudeau Intl Newark

2:10 p.m. - 3:59 p.m.LHR London Heathrow-YSJ Saint John

29h 49m2 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl

C$ 1,149United Airlines

Sat, 10 Oct - Sat, 17 Oct

4:40 p.m. - 10:25 a.m.YSJ Saint John-LHR London Heathrow

13h 45m2 stops Montreal Pierre Elliott Trudeau Intl Newark

6:00 p.m. - 3:59 p.m.LHR London Heathrow-YSJ Saint John

25h 59m2 stops Newark Montreal Pierre Elliott Trudeau Intl

C$ 1,149United Airlines

Tue, 15 Sep - Tue, 22 Sep

11:05 a.m. - 6:40 a.m.YSJ Saint John-LHR London Heathrow

15h 35m2 stops Montreal Pierre Elliott Trudeau Intl Washington, D.C. Dulles Intl

6:00 p.m. - 10:25 a.m.LHR London Heathrow-YSJ Saint John

44h 25m2 stops Newark Montreal Pierre Elliott Trudeau Intl

C$ 1,151United Airlines

Sun, 29 Nov - Thu, 3 Dec

5:40 a.m. - 10:25 a.m.YSJ Saint John-LHR London Heathrow

24h 45m2 stops Toronto Pearson Intl Newark

4:00 p.m. - 3:59 p.m.LHR London Heathrow-YSJ Saint John

27h 59m2 stops Newark Montreal Pierre Elliott Trudeau Intl

C$ 1,155United Airlines

Fri, 2 Oct - Sat, 10 Oct

4:40 p.m. - 6:30 a.m.YSJ Saint John-LHR London Heathrow

9h 50m1 stop Montreal Pierre Elliott Trudeau Intl

9:30 a.m. - 3:59 p.m.LHR London Heathrow-YSJ Saint John

10h 29m1 stop Montreal Pierre Elliott Trudeau Intl

C$ 1,285Air Canada

Tue, 15 Sep - Tue, 22 Sep

4:40 p.m. - 10:00 a.m.YSJ Saint John-LHR London Heathrow

13h 20m1 stop Montreal Pierre Elliott Trudeau Intl

5:15 p.m. - 3:59 p.m.LHR London Heathrow-YSJ Saint John

50h 44m2 stops Zurich Montreal Pierre Elliott Trudeau Intl

C$ 1,309Air Canada

Sat, 10 Oct - Sat, 17 Oct

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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

2 Oct

YSJ4:40 p.m.Saint John

33h 15m

2 stops

LHR5:55 a.m.London Heathrow

10 Oct

LHR12:00 p.m.London Heathrow

31h 59m

2 stops

YSJ3:59 p.m.Saint John

C$ 1,148

United Airlines

29 Nov

YSJ11:05 a.m.Saint John

15h 35m

2 stops

LHR6:40 a.m.London Heathrow

3 Dec

LHR6:00 p.m.London Heathrow

44h 25m

2 stops

YSJ10:25 a.m.Saint John

C$ 1,149

United Airlines

29 Nov

YSJ11:05 a.m.Saint John

15h 35m

2 stops

LHR6:40 a.m.London Heathrow

3 Dec

LHR6:00 p.m.London Heathrow

44h 25m

2 stops

YSJ10:25 a.m.Saint John

C$ 1,151

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

15 Sep

YSJ4:40 p.m.Saint John

9h 50m

1 stop

LHR6:30 a.m.London Heathrow

22 Sep

LHR9:30 a.m.London Heathrow

10h 29m

1 stop

YSJ3:59 p.m.Saint John

C$ 1,285

Air Canada

2 Oct

YSJ4:40 p.m.Saint John

13h 20m

1 stop

LHR10:00 a.m.London Heathrow

10 Oct

LHR12:10 p.m.London Heathrow

55h 49m

2 stops

YSJ3:59 p.m.Saint John

C$ 1,309

Air Canada

29 Nov

YSJ11:05 a.m.Saint John

16h 05m

1 stop

LHR7:10 a.m.London Heathrow

3 Dec

LHR6:00 a.m.London Heathrow

32h 25m

2 stops

YSJ10:25 a.m.Saint John

C$ 1,310

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

Cheapest round-trip

Saint JohnLondon

YSJ Saint John - LHR London Heathrow

YSJLHR

Saint John

Fri 2/10

4:40 p.m.-5:55 a.m.

2 stops33h 15m

London Heathrow

Sat 10/10

12:00 p.m.-3:59 p.m.

2 stops31h 59m

C$ 1,148

Saint JohnLondon

YSJ Saint John - LHR London Heathrow

YSJLHR

Saint John

Sun 29/11

11:05 a.m.-6:40 a.m.

2 stops15h 35m

London Heathrow

Thu 3/12

6:00 p.m.-10:25 a.m.

2 stops44h 25m

C$ 1,148

Saint JohnLondon

YSJ Saint John - LHR London Heathrow

YSJLHR

Saint John

Fri 2/10

4:40 p.m.-6:55 a.m.

2 stops34h 15m

London Heathrow

Sat 10/10

2:10 p.m.-3:59 p.m.

2 stops29h 49m

C$ 1,149

Saint JohnLondon

YSJ Saint John - LHR London Heathrow

YSJLHR

Saint John

Sun 29/11

11:05 a.m.-6:40 a.m.

2 stops15h 35m

London Heathrow

Thu 3/12

6:00 p.m.-10:25 a.m.

2 stops44h 25m

C$ 1,149

Saint JohnLondon

YSJ Saint John - LHR London Heathrow

YSJLHR

Saint John

Sat 10/10

4:40 p.m.-8:40 p.m.

2 stops24h 00m

London Heathrow

Sat 17/10

2:10 p.m.-3:59 p.m.

2 stops29h 49m

C$ 1,149

Saint JohnLondon

YSJ Saint John - LHR London Heathrow

YSJLHR

Saint John

Tue 15/9

4:40 p.m.-10:25 a.m.

2 stops13h 45m

London Heathrow

Tue 22/9

6:00 p.m.-3:59 p.m.

2 stops25h 59m

C$ 1,149

Saint JohnLondon

YSJ Saint John - LHR London Heathrow

YSJLHR

Saint John

Sun 29/11

11:05 a.m.-6:40 a.m.

2 stops15h 35m

London Heathrow

Thu 3/12

6:00 p.m.-10:25 a.m.

2 stops44h 25m

C$ 1,151

Saint JohnLondon

YSJ Saint John - LHR London Heathrow

YSJLHR

Saint John

Fri 2/10

5:40 a.m.-10:25 a.m.

2 stops24h 45m

London Heathrow

Sat 10/10

4:00 p.m.-3:59 p.m.

2 stops27h 59m

C$ 1,155

Quickest round-trip

Saint JohnLondon

YSJ Saint John - LHR London Heathrow

YSJLHR

Saint John

Tue 15/9

4:40 p.m.-6:30 a.m.

1 stop9h 50m

London Heathrow

Tue 22/9

9:30 a.m.-3:59 p.m.

1 stop10h 29m

C$ 1,285

Saint JohnLondon

YSJ Saint John - LHR London Heathrow

YSJLHR

Saint John

Sat 10/10

4:40 p.m.-10:00 a.m.

1 stop13h 20m

London Heathrow

Sat 17/10

5:15 p.m.-3:59 p.m.

2 stops50h 44m

C$ 1,309

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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

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

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$ 578
Fastest flight time	13h 45m
Direct flights	None

The best one-way flight to London Heathrow Airport from Saint John in the past 72 hours is C$ 578. The best round-trip flight deal from Saint John to London Heathrow Airport found on momondo in the last 72 hours is C$ 1,148.

The fastest flight from Saint John to London Heathrow Airport takes 13h 45m

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

Frequently asked questions about flying from Saint John to London Heathrow Airport

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 13h 45m.
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 2026.
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$ 1,272	Free Cancellation	Rating 7.1 11,506 reviews		Search Air Canada flights

Hounslow

Stratford-upon-Avon

Milton Keynes

Gatwick

Northampton

Wembley

Staines-upon-Thames

Slough

Banbury

Ramsgate

Kenilworth

Swindon

Watford

Wokingham

Poole

Dartford

Eastbourne

Salisbury

Feltham

Hayes

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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Cheap flights from Saint John to London from C$ 578

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 9/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Find the cheapest flights from Saint John to London

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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

What is the cheapest airline that flies 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

Best price found

Fastest flight time

Direct flights

Frequently asked questions about flying 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?

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

Saint John flight routes

According to popular flight searches on momondo this year

London Heathrow Airport flight routes

According to popular flight searches on momondo this year

Fly your favourite airline to London

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List of cabin classes available on flights landing in London. Availability may vary depending on flight origin and airline.

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