How do I get Price Alerts for flights from Saint John to London?

Price Alerts will notify you by email when the price for flights to London from Saint John decreases. To activate this, select your desired travel dates and search for offers. While browsing through offers you’ll see the Price Alert widget toggle. Click it to turn on notifications.

How can I save money on flights from Saint John to London with momondo?

With “Price Forecast”, learn how soon you should book your flight in advance. Down to the day of week and time of day, our information can inform you on the ideal time to book to save on your travel. Our “Price Calendar” shows you at a quick glance when to book your travel for lower rates. By setting “Price Alerts” you can monitor changes in price and target the ideal time to book. Search for your trip destination by budget amount via our “Explore” feature. Whether you’re looking for ideas for your next travel adventure or cost-cutting tips, our “Discover” content is a great place to start.

How does momondo find its flight prices?

We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

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

Prices for flights from Saint John Airport to London were last updated today.

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

There is 1 operator available for flights from Saint John Airport to London as of April 2026.

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

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.

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

The travel and health documents required for your trip to London 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. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

C$ 517 Cheap Flights from Saint John to London in 2026

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Find the cheapest flights from Saint John to London

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

4:30 p.m. - 11:55 a.m.

YSJ

LHR

15h 25m

2 stops

8:00 a.m. - 11:57 a.m.

LHR

YSJ

31h 57m

2 stops

C$ 1,145United Airlines

Wed, 6 May - Sun, 10 May

5:35 a.m. - 8:30 a.m.

YSJ

LHR

22h 55m

2 stops

10:25 a.m. - 11:52 p.m.

LHR

YSJ

17h 27m

2 stops

C$ 1,162United Airlines

Mon, 25 May - Fri, 29 May

4:30 p.m. - 8:40 p.m.

YSJ

LHR

24h 10m

2 stops

4:40 p.m. - 3:50 p.m.

LHR

YSJ

27h 10m

2 stops

C$ 1,189United Airlines

Tue, 2 Jun - Tue, 30 Jun

4:30 p.m. - 11:55 a.m.

YSJ

LHR

15h 25m

2 stops

12:00 p.m. - 11:57 a.m.

LHR

YSJ

27h 57m

2 stops

C$ 1,196United Airlines

Wed, 6 May - Wed, 13 May

5:35 a.m. - 6:45 a.m.

YSJ

LHR

21h 10m

2 stops

12:15 p.m. - 3:40 p.m.

LHR

YSJ

31h 25m

2 stops

C$ 1,200United Airlines

Mon, 25 May - Fri, 29 May

4:30 p.m. - 10:00 a.m.

YSJ

LHR

13h 30m

1 stop

9:30 a.m. - 3:50 p.m.

LHR

YSJ

10h 20m

1 stop

C$ 1,265Air Canada

Tue, 2 Jun - Tue, 30 Jun

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

YSJ

LHR

10h 00m

1 stop

5:40 p.m. - 3:50 p.m.

LHR

YSJ

26h 10m

2 stops

C$ 1,276Air Canada

Tue, 2 Jun - Tue, 30 Jun

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

YSJ

LHR

10h 00m

1 stop

6:00 a.m. - 3:40 p.m.

LHR

YSJ

37h 40m

2 stops

C$ 1,308Air Canada

Wed, 6 May - Wed, 13 May

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

YSJ

LHR

10h 00m

1 stop

9:30 a.m. - 3:40 p.m.

LHR

YSJ

10h 10m

1 stop

C$ 1,321Air Canada

Wed, 6 May - Wed, 13 May

12:00 p.m. - 8:45 p.m.

YSJ

LGW

28h 45m

3 stops

9:50 a.m. - 1:25 a.m.

LGW

YSJ

19h 35m

2 stops

C$ 1,632Multiple Airlines

Fri, 7 Aug - Fri, 4 Sep

United Airlines flights from Saint John to London

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

United Airlines

6 May

YSJ4:30 p.m.Saint John

15h 25m

2 stops

LHR11:55 a.m.London Heathrow

10 May

LHR8:00 a.m.London Heathrow

31h 57m

2 stops

YSJ11:57 a.m.Saint John

C$ 1,145

United Airlines

25 May

YSJ5:35 a.m.Saint John

22h 55m

2 stops

LHR8:30 a.m.London Heathrow

29 May

LHR10:25 a.m.London Heathrow

17h 27m

2 stops

YSJ11:52 p.m.Saint John

C$ 1,162

United Airlines

2 Jun

YSJ4:30 p.m.Saint John

24h 10m

2 stops

LHR8:40 p.m.London Heathrow

30 Jun

LHR4:40 p.m.London Heathrow

27h 10m

2 stops

YSJ3:50 p.m.Saint John

C$ 1,189

Air Canada flights from Saint John to London

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

Air Canada

2 Jun

YSJ4:30 p.m.Saint John

13h 30m

1 stop

LHR10:00 a.m.London Heathrow

30 Jun

LHR9:30 a.m.London Heathrow

10h 20m

1 stop

YSJ3:50 p.m.Saint John

C$ 1,265

Air Canada

2 Jun

YSJ4:30 p.m.Saint John

10h 00m

1 stop

LHR6:30 a.m.London Heathrow

30 Jun

LHR5:40 p.m.London Heathrow

26h 10m

2 stops

YSJ3:50 p.m.Saint John

C$ 1,276

Air Canada

6 May

YSJ4:30 p.m.Saint John

10h 00m

1 stop

LHR6:30 a.m.London Heathrow

13 May

LHR6:00 a.m.London Heathrow

37h 40m

2 stops

YSJ3:40 p.m.Saint John

C$ 1,308

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Wed 6/5

4:30 p.m.-11:55 a.m.

2 stops15h 25m

London Heathrow

Sun 10/5

8:00 a.m.-11:57 a.m.

2 stops31h 57m

C$ 1,145

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Mon 25/5

5:35 a.m.-8:30 a.m.

2 stops22h 55m

London Heathrow

Fri 29/5

10:25 a.m.-11:52 p.m.

2 stops17h 27m

C$ 1,162

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Tue 2/6

4:30 p.m.-8:40 p.m.

2 stops24h 10m

London Heathrow

Tue 30/6

4:40 p.m.-3:50 p.m.

2 stops27h 10m

C$ 1,189

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Wed 6/5

4:30 p.m.-11:55 a.m.

2 stops15h 25m

London Heathrow

Wed 13/5

12:00 p.m.-11:57 a.m.

2 stops27h 57m

C$ 1,196

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Mon 25/5

5:35 a.m.-6:45 a.m.

2 stops21h 10m

London Heathrow

Fri 29/5

12:15 p.m.-3:40 p.m.

2 stops31h 25m

C$ 1,200

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Tue 2/6

4:30 p.m.-10:00 a.m.

1 stop13h 30m

London Heathrow

Tue 30/6

9:30 a.m.-3:50 p.m.

1 stop10h 20m

C$ 1,265

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Tue 2/6

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

1 stop10h 00m

London Heathrow

Tue 30/6

5:40 p.m.-3:50 p.m.

2 stops26h 10m

C$ 1,276

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Wed 6/5

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

1 stop10h 00m

London Heathrow

Wed 13/5

6:00 a.m.-3:40 p.m.

2 stops37h 40m

C$ 1,308

Quickest round-trip

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Wed 6/5

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

1 stop10h 00m

London Heathrow

Wed 13/5

9:30 a.m.-3:40 p.m.

1 stop10h 10m

C$ 1,321

Saint JohnLondon

YSJ - LGW

YSJLGW

Saint John

Fri 7/8

12:00 p.m.-8:45 p.m.

3 stops28h 45m

London Gatwick

Fri 4/9

9:50 a.m.-1:25 a.m.

2 stops19h 35m

C$ 1,632

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

When to book flights from Saint John to London

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

Estimated round-trip price

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

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

Fastest flight time	17h 25m
Direct flights	None

The fastest flight from Saint John to London takes 17h 25m

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

Search flight deals

Frequently asked questions about flying from Saint John to London

How far is Saint John to London by plane?
There are 4747.7 km between Saint John and London. By plane, this route typically takes 17h 25m.
When did momondo last update prices for flights from Saint John Airport to London?
Prices for flights from Saint John Airport to London were last updated today.
How many operators does momondo search for flights from Saint John Airport to London?
There is 1 operator available for flights from Saint John Airport to London as of April 2026.
How old do you have to be to fly from Saint John Airport to London?
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.
What documentation or ID do you need to fly to London?
The travel and health documents required for your trip to London 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. 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?
Based on momondo bookings for flights between Saint John and London, the leading airline is Air Canada, making up 100% of the total bookings.

Best airlines flying from Saint John to London

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

Airline	Rating	Free Cancellation	Price
Air Canada	PriceFrom C$ 1,184	Free Cancellation	Rating 7.1 10,916 reviews		Search Air Canada flights

Frequently asked questions about flying from Saint John to London

How do I get Price Alerts for flights from Saint John to London?
Price Alerts will notify you by email when the price for flights to London from Saint John decreases. To activate this, select your desired travel dates and search for offers. While browsing through offers you’ll see the Price Alert widget toggle. Click it to turn on notifications.
How can I save money on flights from Saint John to London with momondo?
With “Price Forecast”, learn how soon you should book your flight in advance. Down to the day of week and time of day, our information can inform you on the ideal time to book to save on your travel. Our “Price Calendar” shows you at a quick glance when to book your travel for lower rates. By setting “Price Alerts” you can monitor changes in price and target the ideal time to book. Search for your trip destination by budget amount via our “Explore” feature. Whether you’re looking for ideas for your next travel adventure or cost-cutting tips, our “Discover” content is a great place to start.
How does momondo find its flight prices?
We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

Hounslow

Wembley

Ilford

Slough

Gatwick

Wokingham

Crawley

Feltham

Hayes

Waterlooville

Chelmsford

Basingstoke

Milton Keynes

Dover

Worthing

Ipswich

Woking

Maidstone

Enfield

Harrow

Why use momondo?

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

It is quick and easy to find Saint John to London flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to London that suits you.

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

Yes. All flights to London from Saint John on momondo can be compared and filtered by various policies on offer, including flexible booking.

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?

Of course. momondo tracks the price of Saint John to London flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Cheap flights from Saint John to London from C$ 517

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 22/5. 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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Find the cheapest flights from Saint John to London

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United Airlines flights from Saint John to London

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

Air Canada flights from Saint John to London

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

momondo Fare Finder

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

When to book flights from Saint John to London

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

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

Fastest flight time

Direct flights

Frequently asked questions about flying from Saint John to London

Best airlines flying from Saint John to London

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

Frequently asked questions about flying from Saint John to London

Travelling to a place near London?

Why use momondo?

An easier way to manage your London 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 the United Kingdom

Fly into one of these airports located in London

Airports listed have a maximum distance of 57.3 km from London

Fly your favourite airline to London

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to London

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

Popular Cities in the United Kingdom

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

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