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

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

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

Prices for flights from London to Saint John Airport are updated daily.

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

The number of operators available for flights from London to Saint John Airport is 1 as of September 2026.

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

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London to Saint John Airport.

What documentation or ID do you need to fly to Saint John Airport?

The travel and health documents you'll need for your trip to Saint John Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Saint John Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

£507 Cheap Flights from London to Saint John in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from London to Saint John

Return

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

06:00 - 23:51LHR London Heathrow-YSJ Saint John

21h 51m2 stops Zurich Toronto Pearson Intl

05:00 - 06:30YSJ Saint John-LHR London Heathrow

21h 30m2 stops Toronto Pearson Intl Ottawa

£538Air Canada

Thu, 15 Oct - Mon, 19 Oct

06:00 - 23:51LHR London Heathrow-YSJ Saint John

21h 51m2 stops Zurich Toronto Pearson Intl

16:40 - 10:00YSJ Saint John-LHR London Heathrow

13h 20m1 stop Montreal Pierre Elliott Trudeau Intl

£538Air Canada

Thu, 15 Oct - Mon, 19 Oct

06:00 - 23:51LHR London Heathrow-YSJ Saint John

21h 51m2 stops Zurich Toronto Pearson Intl

05:00 - 06:30YSJ Saint John-LHR London Heathrow

21h 30m2 stops Toronto Pearson Intl Ottawa

£538Air Canada

Thu, 15 Oct - Mon, 19 Oct

06:00 - 23:51LHR London Heathrow-YSJ Saint John

21h 51m2 stops Zurich Toronto Pearson Intl

16:40 - 10:00YSJ Saint John-LHR London Heathrow

13h 20m1 stop Montreal Pierre Elliott Trudeau Intl

£539Air Canada

Thu, 15 Oct - Mon, 19 Oct

14:05 - 15:59LHR London Heathrow-YSJ Saint John

29h 54m1 stop Montreal Pierre Elliott Trudeau Intl

05:00 - 06:30YSJ Saint John-LHR London Heathrow

21h 30m2 stops Toronto Pearson Intl Ottawa

£565Air Canada

Thu, 15 Oct - Mon, 19 Oct

12:40 - 15:59LHR London Heathrow-YSJ Saint John

31h 19m2 stops Halifax Intl Montreal Pierre Elliott Trudeau Intl

05:00 - 06:30YSJ Saint John-LHR London Heathrow

21h 30m2 stops Toronto Pearson Intl Ottawa

£565Air Canada

Thu, 15 Oct - Mon, 19 Oct

14:05 - 15:59LHR London Heathrow-YSJ Saint John

29h 54m1 stop Montreal Pierre Elliott Trudeau Intl

05:00 - 06:30YSJ Saint John-LHR London Heathrow

21h 30m2 stops Toronto Pearson Intl Ottawa

£565Air Canada

Thu, 15 Oct - Mon, 19 Oct

12:40 - 15:59LHR London Heathrow-YSJ Saint John

31h 19m2 stops Halifax Intl Montreal Pierre Elliott Trudeau Intl

05:00 - 06:30YSJ Saint John-LHR London Heathrow

21h 30m2 stops Toronto Pearson Intl Ottawa

£565Air Canada

Thu, 15 Oct - Mon, 19 Oct

06:30 - 23:24LHR London Heathrow-YSJ Saint John

19h 54m2 stops Frankfurt am Main Toronto Pearson Intl

11:05 - 21:00YSJ Saint John-LHR London Heathrow

30h 55m2 stops Montreal Pierre Elliott Trudeau Intl Ottawa

£636Multiple Airlines

Tue, 16 Mar - Thu, 25 Mar

07:40 - 23:24LHR London Heathrow-YSJ Saint John

19h 44m2 stops Munich Franz Josef Strauss Toronto Pearson Intl

11:05 - 11:20YSJ Saint John-LHR London Heathrow

20h 15m3 stops Montreal Pierre Elliott Trudeau Intl Ottawa Toronto Pearson Intl

£729Multiple Airlines

Sat, 7 Nov - Sat, 14 Nov

Cheap last-minute flights

Enter your travel dates to find the best prices.

08:30 - 23:51LHR London Heathrow-YSJ Saint John

19h 21m1 stop Toronto Pearson Intl

05:00 - 06:35YSJ Saint John-LHR London Heathrow

21h 35m1 stop Toronto Pearson Intl

£572Air Canada

Thu, 1 Oct - Thu, 8 Oct

09:30 - 23:51LHR London Heathrow-YSJ Saint John

18h 21m2 stops Ottawa Toronto Pearson Intl

05:00 - 06:35YSJ Saint John-LHR London Heathrow

21h 35m1 stop Toronto Pearson Intl

£577Air Canada

Thu, 1 Oct - Thu, 8 Oct

09:30 - 15:59LHR London Heathrow-YSJ Saint John

34h 29m2 stops Ottawa Montreal Pierre Elliott Trudeau Intl

05:00 - 06:30YSJ Saint John-LHR London Heathrow

21h 30m2 stops Toronto Pearson Intl Ottawa

£606Air Canada

Thu, 1 Oct - Thu, 8 Oct

09:30 - 23:51LHR London Heathrow-YSJ Saint John

18h 21m2 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl

16:40 - 06:30YSJ Saint John-LHR London Heathrow

9h 50m1 stop Montreal Pierre Elliott Trudeau Intl

£630Air Canada

Tue, 29 Sep - Wed, 7 Oct

09:30 - 23:51LHR London Heathrow-YSJ Saint John

18h 21m2 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl

12:50 - 06:30YSJ Saint John-LHR London Heathrow

13h 40m2 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

£636Air Canada

Tue, 29 Sep - Wed, 7 Oct

09:30 - 15:59LHR London Heathrow-YSJ Saint John

10h 29m1 stop Montreal Pierre Elliott Trudeau Intl

16:40 - 06:30YSJ Saint John-LHR London Heathrow

9h 50m1 stop Montreal Pierre Elliott Trudeau Intl

£681Air Canada

Tue, 29 Sep - Wed, 7 Oct

17:50 - 15:59LHR London Heathrow-YSJ Saint John

26h 09m3 stops Toronto Pearson Intl Ottawa Montreal Pierre Elliott Trudeau Intl

06:55 - 11:10YSJ Saint John-LHR London Heathrow

24h 15m2 stops MET - Montreal Metropolitan Toronto Pearson Intl

£859Multiple Airlines

Thu, 1 Oct - Thu, 8 Oct

17:50 - 15:59LHR London Heathrow-YSJ Saint John

26h 09m3 stops Toronto Pearson Intl Ottawa Montreal Pierre Elliott Trudeau Intl

06:55 - 11:10YSJ Saint John-LHR London Heathrow

24h 15m3 stops MET - Montreal Metropolitan Québec City Toronto Pearson Intl

£1,127Multiple Airlines

Thu, 1 Oct - Thu, 8 Oct

12:05 - 23:15LHR London Heathrow-YSJ Saint John

15h 10m2 stops Toronto Pearson Intl MET - Montreal Metropolitan

06:55 - 10:20YSJ Saint John-LHR London Heathrow

23h 25m3 stops MET - Montreal Metropolitan Toronto Pearson Intl Lisbon Humberto Delgado

£1,156Multiple Airlines

Tue, 29 Sep - Wed, 7 Oct

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Air Canada flights from London to Saint John

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

Air Canada

15 Oct

LHR06:00London Heathrow

21h 51m

2 stops

YSJ23:51Saint John

19 Oct

YSJ05:00Saint John

21h 30m

2 stops

LHR06:30London Heathrow

£538

Air Canada

15 Oct

LHR06:00London Heathrow

21h 51m

2 stops

YSJ23:51Saint John

19 Oct

YSJ16:40Saint John

13h 20m

1 stop

LHR10:00London Heathrow

£538

Air Canada

15 Oct

LHR06:00London Heathrow

21h 51m

2 stops

YSJ23:51Saint John

19 Oct

YSJ16:40Saint John

13h 20m

1 stop

LHR10:00London Heathrow

£539

United Airlines flights from London to Saint John

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

United Airlines

11 Nov

LHR15:10London Heathrow

29h 44m

2 stops

YSJ16:54Saint John

18 Nov

YSJ11:05Saint John

20h 55m

2 stops

LHR12:00London Heathrow

£771

United Airlines

1 Nov

LHR09:30London Heathrow

17h 58m

3 stops

YSJ23:28Saint John

8 Nov

YSJ11:05Saint John

17h 20m

2 stops

LHR08:25London Heathrow

£1,680

United Airlines

16 Mar

LHR06:50London Heathrow

19h 34m

3 stops

YSJ23:24Saint John

25 Mar

YSJ18:00Saint John

15h 00m

2 stops

LHR12:00London Heathrow

£2,747

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonSaint John

LHR London Heathrow - YSJ Saint John

LHRYSJ

London Heathrow

Thu 15/10

06:00-23:51

2 stops21h 51m

Saint John

Mon 19/10

05:00-06:30

2 stops21h 30m

£538

Fastest return journey

LondonSaint John

LHR London Heathrow - YSJ Saint John

LHRYSJ

London Heathrow

Thu 15/10

06:00-23:51

2 stops21h 51m

Saint John

Mon 19/10

16:40-10:00

1 stop13h 20m

£538

LondonSaint John

LHR London Heathrow - YSJ Saint John

LHRYSJ

London Heathrow

Thu 15/10

06:00-23:51

2 stops21h 51m

Saint John

Mon 19/10

05:00-06:30

2 stops21h 30m

£538

LondonSaint John

LHR London Heathrow - YSJ Saint John

LHRYSJ

London Heathrow

Thu 15/10

06:00-23:51

2 stops21h 51m

Saint John

Mon 19/10

16:40-10:00

1 stop13h 20m

£539

LondonSaint John

LHR London Heathrow - YSJ Saint John

LHRYSJ

London Heathrow

Thu 15/10

14:05-15:59

1 stop29h 54m

Saint John

Mon 19/10

05:00-06:30

2 stops21h 30m

£565

LondonSaint John

LHR London Heathrow - YSJ Saint John

LHRYSJ

London Heathrow

Thu 15/10

12:40-15:59

2 stops31h 19m

Saint John

Mon 19/10

05:00-06:30

2 stops21h 30m

£565

LondonSaint John

LHR London Heathrow - YSJ Saint John

LHRYSJ

London Heathrow

Thu 15/10

14:05-15:59

1 stop29h 54m

Saint John

Mon 19/10

05:00-06:30

2 stops21h 30m

£565

LondonSaint John

LHR London Heathrow - YSJ Saint John

LHRYSJ

London Heathrow

Thu 15/10

12:40-15:59

2 stops31h 19m

Saint John

Mon 19/10

05:00-06:30

2 stops21h 30m

£565

LondonSaint John

LHR London Heathrow - YSJ Saint John

LHRYSJ

London Heathrow

Tue 16/3

06:30-23:24

2 stops19h 54m

Saint John

Thu 25/3

11:05-21:00

2 stops30h 55m

£636

LondonSaint John

LHR London Heathrow - YSJ Saint John

LHRYSJ

London Heathrow

Sat 7/11

07:40-23:24

2 stops19h 44m

Saint John

Sat 14/11

11:05-11:20

3 stops20h 15m

£729

Flights are sorted by cheapest return flights first.

Showing 1-10 of 16 resultsSorted by cheapest first

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

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 month to fly to Saint John?

The month of April is, on average, the cheapest month to fly to Saint John from London, with most prices found around £0. The month of February is another great option to travel to Saint John, with average flight prices from London averaging around £494.

When to book flights from London to Saint John

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

Estimated return price

Cheap London to Saint John (LON to YSJ) flight deals and tips

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

Best price found	£507
Direct flights	None

The best one-way flight to Saint John from London in the past 72 hours is £507. The best return flight deal from London to Saint John found on momondo in the last 72 hours is £538.

There are no direct flights from London to Saint John. There are no popular flight routes from London to Saint John.

Search flight deals

Frequently asked questions about flying from London to Saint John

How far is London to Saint John by plane?
The straight-line distance from London to Saint John is 2950.1 mi.
When did momondo last update prices for flights from London to Saint John Airport?
Prices for flights from London to Saint John Airport are updated daily.
How many operators does momondo search for flights from London to Saint John Airport?
The number of operators available for flights from London to Saint John Airport is 1 as of September 2026.
How old do you have to be to fly from London to Saint John Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London to Saint John Airport.
What documentation or ID do you need to fly to Saint John Airport?
The travel and health documents you'll need for your trip to Saint John Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Saint John Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from London to Saint John?
Based on momondo bookings for flights between London and Saint John, the leading airline is Air Canada, making up 100% of the total bookings.

Best airlines flying from London to Saint John

Compare and see reviews for airlines that fly from London to Saint John with momondo

Airline	Rating	Free Cancellation	Price
Air Canada	PriceFrom £481	Free Cancellation	Rating 7.1 11,696 reviews		Search Air Canada flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to Saint John for you.

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

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

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

Once you have performed a search for London to Saint John 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 London to Saint John right now. Can momondo alert me if prices change?

If you are not ready to book a flight from London to Saint John now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Saint John and let you know when they change.

An easier way to manage your Saint John trip

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Cheap flights from London to Saint John from £507

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London to Saint John departing on 10/11. 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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Filter for what you want

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Air Canada flights from London to Saint John

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

United Airlines flights from London to Saint John

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

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

What is the cheapest month to fly to Saint John?

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

When to book flights from London to Saint John

Cheap London to Saint John (LON to YSJ) flight deals and tips

Best price found

Direct flights

Frequently asked questions about flying from London to Saint John

Best airlines flying from London to Saint John

Compare and see reviews for airlines that fly from London to Saint John with momondo

Why use momondo?

An easier way to manage your Saint John trip

We make it super easy to schedule, organise 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 Canada

Airports servicing New Brunswick

Fly your favourite airline to Saint John

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