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 November 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.

£531 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

Cheap return flights

Enter your travel dates to find the best prices.

06:00 - 23:58LHR London Heathrow-YSJ Saint John

21h 58m2 stops Zurich Toronto Pearson Intl

05:20 - 21:00YSJ Saint John-LHR London Heathrow

35h 40m2 stops Toronto Pearson Intl Halifax Intl

£646Air Canada

Thu, 14 Jan - Sun, 17 Jan

09:00 - 17:19LHR London Heathrow-YSJ Saint John

36h 19m2 stops Ottawa Toronto Pearson Intl

11:05 - 07:10YSJ Saint John-LHR London Heathrow

16h 05m1 stop Montreal Pierre Elliott Trudeau Intl

£676Air Canada

Thu, 14 Jan - Sun, 17 Jan

09:30 - 00:17LHR London Heathrow-YSJ Saint John

18h 47m2 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl

16:30 - 10:00YSJ Saint John-LHR London Heathrow

13h 30m1 stop Montreal Pierre Elliott Trudeau Intl

£677Air Canada

Tue, 4 May - Thu, 13 May

12:40 - 15:50LHR London Heathrow-YSJ Saint John

31h 10m2 stops Halifax Intl Montreal Pierre Elliott Trudeau Intl

05:45 - 07:25YSJ Saint John-LHR London Heathrow

21h 40m2 stops Toronto Pearson Intl Halifax Intl

£678Air Canada

Tue, 4 May - Thu, 13 May

09:00 - 23:58LHR London Heathrow-YSJ Saint John

18h 58m2 stops Ottawa Toronto Pearson Intl

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

29h 55m2 stops Montreal Pierre Elliott Trudeau Intl Halifax Intl

£681Air Canada

Thu, 14 Jan - Sun, 17 Jan

13:00 - 10:25LHR London Heathrow-YSJ Saint John

25h 25m1 stop Montreal Pierre Elliott Trudeau Intl

05:20 - 21:00YSJ Saint John-LHR London Heathrow

35h 40m2 stops Toronto Pearson Intl Halifax Intl

£681Air Canada

Thu, 14 Jan - Sun, 17 Jan

12:40 - 10:25LHR London Heathrow-YSJ Saint John

25h 45m2 stops Halifax Intl Montreal Pierre Elliott Trudeau Intl

05:20 - 07:25YSJ Saint John-LHR London Heathrow

22h 05m2 stops Toronto Pearson Intl Halifax Intl

£682Air Canada

Fri, 16 Apr - Tue, 20 Apr

12:40 - 16:59LHR London Heathrow-YSJ Saint John

32h 19m2 stops Halifax Intl Toronto Pearson Intl

11:05 - 06:30YSJ Saint John-LHR London Heathrow

15h 25m1 stop Montreal Pierre Elliott Trudeau Intl

£682Air Canada

Fri, 16 Apr - Tue, 20 Apr

12:05 - 23:58LHR London Heathrow-YSJ Saint John

15h 53m2 stops Washington, D.C. Dulles Intl Toronto Pearson Intl

05:20 - 06:20YSJ Saint John-LHR London Heathrow

21h 00m2 stops Toronto Pearson Intl Newark

£995United Airlines

Thu, 24 Dec - Thu, 31 Dec

06:00 - 10:25LHR London Heathrow-YSJ Saint John

32h 25m2 stops Vienna Intl Montreal Pierre Elliott Trudeau Intl

05:20 - 12:00YSJ Saint John-LHR London Heathrow

50h 40m2 stops Toronto Pearson Intl Chicago O'Hare Intl

£1,007Multiple Airlines

Sat, 26 Dec - Sat, 2 Jan

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United Airlines flights from London to Saint John

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

United Airlines

24 Dec

LHR12:05London Heathrow

15h 53m

2 stops

YSJ23:58Saint John

31 Dec

YSJ05:20Saint John

21h 00m

2 stops

LHR06:20London Heathrow

£995

United Airlines

25 Dec

LHR12:50London Heathrow

25h 35m

2 stops

YSJ10:25Saint John

1 Jan

YSJ05:20Saint John

21h 00m

2 stops

LHR06:20London Heathrow

£1,044

Air Canada flights from London to Saint John

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

Air Canada

14 Jan

LHR06:00London Heathrow

21h 58m

2 stops

YSJ23:58Saint John

17 Jan

YSJ05:20Saint John

35h 40m

2 stops

LHR21:00London Heathrow

£646

Air Canada

14 Jan

LHR09:00London Heathrow

36h 19m

2 stops

YSJ17:19Saint John

17 Jan

YSJ11:05Saint John

16h 05m

1 stop

LHR07:10London Heathrow

£676

Air Canada

4 May

LHR09:30London Heathrow

18h 47m

2 stops

YSJ00:17Saint John

13 May

YSJ16:30Saint John

13h 30m

1 stop

LHR10:00London Heathrow

£677

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonSaint John

LHR London Heathrow - YSJ Saint John

LHRYSJ

London Heathrow

Thu 14/1

06:00-23:58

2 stops21h 58m

Saint John

Sun 17/1

05:20-21:00

2 stops35h 40m

£646

LondonSaint John

LHR London Heathrow - YSJ Saint John

LHRYSJ

London Heathrow

Thu 14/1

09:00-17:19

2 stops36h 19m

Saint John

Sun 17/1

11:05-07:10

1 stop16h 05m

£676

Fastest return journey

LondonSaint John

LHR London Heathrow - YSJ Saint John

LHRYSJ

London Heathrow

Tue 4/5

09:30-00:17

2 stops18h 47m

Saint John

Thu 13/5

16:30-10:00

1 stop13h 30m

£677

LondonSaint John

LHR London Heathrow - YSJ Saint John

LHRYSJ

London Heathrow

Tue 4/5

12:40-15:50

2 stops31h 10m

Saint John

Thu 13/5

05:45-07:25

2 stops21h 40m

£678

LondonSaint John

LHR London Heathrow - YSJ Saint John

LHRYSJ

London Heathrow

Thu 14/1

09:00-23:58

2 stops18h 58m

Saint John

Sun 17/1

11:05-21:00

2 stops29h 55m

£681

LondonSaint John

LHR London Heathrow - YSJ Saint John

LHRYSJ

London Heathrow

Thu 14/1

13:00-10:25

1 stop25h 25m

Saint John

Sun 17/1

05:20-21:00

2 stops35h 40m

£681

LondonSaint John

LHR London Heathrow - YSJ Saint John

LHRYSJ

London Heathrow

Fri 16/4

12:40-10:25

2 stops25h 45m

Saint John

Tue 20/4

05:20-07:25

2 stops22h 05m

£682

LondonSaint John

LHR London Heathrow - YSJ Saint John

LHRYSJ

London Heathrow

Fri 16/4

12:40-16:59

2 stops32h 19m

Saint John

Tue 20/4

11:05-06:30

1 stop15h 25m

£682

LondonSaint John

LHR London Heathrow - YSJ Saint John

LHRYSJ

London Heathrow

Thu 24/12

12:05-23:58

2 stops15h 53m

Saint John

Thu 31/12

05:20-06:20

2 stops21h 00m

£995

LondonSaint John

LHR London Heathrow - YSJ Saint John

LHRYSJ

London Heathrow

Sat 26/12

06:00-10:25

2 stops32h 25m

Saint John

Sat 2/1

05:20-12:00

2 stops50h 40m

£1,007

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 £492.

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	£531
Direct flights	None

The best one-way flight to Saint John from London in the past 72 hours is £531. The best return flight deal from London to Saint John found on momondo in the last 72 hours is £646.

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 November 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 £479	Free Cancellation	Rating 7.1 11,891 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 £531

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 3/12. 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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United Airlines flights from London to Saint John

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

Air Canada flights from London to Saint John

Our best Air Canada 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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