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Cheap flights from Saint John to London from C$ 555

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 18/6. 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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Find the cheapest flights from Saint John to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
12:20 p.m. - 6:35 a.m.
YSJ
-
LHR
14h 15m
1 stop
Air Canada Logo
9:30 a.m. - 3:50 p.m.
LHR
-
YSJ
10h 20m
1 stop
C$ 1,057Air Canada
Tue, 2 Jun - Tue, 9 Jun
Air Canada Logo
4:30 p.m. - 6:30 a.m.
YSJ
-
LHR
10h 00m
1 stop
Air Canada Logo
9:30 a.m. - 3:50 p.m.
LHR
-
YSJ
10h 20m
1 stop
C$ 1,060Air Canada
Tue, 2 Jun - Tue, 9 Jun
Air Canada Logo
12:50 p.m. - 10:00 a.m.
YSJ
-
LHR
17h 10m
2 stops
Air Canada Logo
6:00 a.m. - 3:49 p.m.
LHR
-
YSJ
37h 49m
2 stops
C$ 1,068Air Canada
Fri, 2 Oct - Tue, 6 Oct
Air Canada Logo
4:30 p.m. - 9:35 a.m.
YSJ
-
LHR
13h 05m
2 stops
Air Canada Logo
9:30 a.m. - 3:50 p.m.
LHR
-
YSJ
10h 20m
1 stop
C$ 1,071Air Canada
Tue, 2 Jun - Tue, 9 Jun
Air Canada Logo
4:30 p.m. - 6:30 a.m.
YSJ
-
LHR
10h 00m
1 stop
Air Canada Logo
9:30 a.m. - 3:49 p.m.
LHR
-
YSJ
10h 19m
1 stop
C$ 1,077Air Canada
Fri, 2 Oct - Tue, 6 Oct
Air Canada Logo
4:30 p.m. - 9:35 a.m.
YSJ
-
LHR
13h 05m
2 stops
Air Canada Logo
2:05 p.m. - 11:52 p.m.
LHR
-
YSJ
13h 47m
2 stops
C$ 1,081Air Canada
Tue, 2 Jun - Tue, 9 Jun
Air Canada Logo
4:30 p.m. - 10:00 a.m.
YSJ
-
LHR
13h 30m
1 stop
Air Canada Logo
2:05 p.m. - 11:52 p.m.
LHR
-
YSJ
13h 47m
2 stops
C$ 1,086Air Canada
Tue, 2 Jun - Tue, 9 Jun
United Airlines Logo
4:30 p.m. - 9:25 p.m.
YSJ
-
LHR
24h 55m
2 stops
United Airlines Logo
4:40 p.m. - 3:40 p.m.
LHR
-
YSJ
27h 00m
2 stops
C$ 1,146United Airlines
Mon, 18 May - Wed, 27 May
United Airlines Logo
4:30 p.m. - 9:25 p.m.
YSJ
-
LHR
24h 55m
2 stops
United Airlines Logo
8:00 a.m. - 3:40 p.m.
LHR
-
YSJ
35h 40m
2 stops
C$ 1,147United Airlines
Mon, 18 May - Wed, 27 May
Multiple Airlines Logo
4:35 p.m. - 7:55 a.m.
YSJ
-
LGW
35h 20m
3 stops
Multiple Airlines Logo
11:35 a.m. - 11:50 p.m.
LGW
-
YSJ
16h 15m
2 stops
C$ 1,506Multiple Airlines
Sat, 20 Jun - Sat, 27 Jun

Air Canada flights from Saint John to London

Our best Air Canada deals on Saint John to London flight tickets
Air Canada
2 Jun
YSJ12:20 p.m.Saint John
14h 15m
1 stop
LHR6:35 a.m.London Heathrow
9 Jun
LHR9:30 a.m.London Heathrow
10h 20m
1 stop
YSJ3:50 p.m.Saint John
C$ 1,057
Air Canada
2 Jun
YSJ4:30 p.m.Saint John
10h 00m
1 stop
LHR6:30 a.m.London Heathrow
9 Jun
LHR9:30 a.m.London Heathrow
10h 20m
1 stop
YSJ3:50 p.m.Saint John
C$ 1,060
Air Canada
2 Oct
YSJ12:50 p.m.Saint John
17h 10m
2 stops
LHR10:00 a.m.London Heathrow
6 Oct
LHR6:00 a.m.London Heathrow
37h 49m
2 stops
YSJ3:49 p.m.Saint John
C$ 1,068

United Airlines flights from Saint John to London

Our best United Airlines deals on Saint John to London flight tickets
United Airlines
18 May
YSJ4:30 p.m.Saint John
24h 55m
2 stops
LHR9:25 p.m.London Heathrow
27 May
LHR4:40 p.m.London Heathrow
27h 00m
2 stops
YSJ3:40 p.m.Saint John
C$ 1,146
United Airlines
18 May
YSJ4:30 p.m.Saint John
24h 55m
2 stops
LHR9:25 p.m.London Heathrow
27 May
LHR8:00 a.m.London Heathrow
35h 40m
2 stops
YSJ3:40 p.m.Saint John
C$ 1,147
United Airlines
18 May
YSJ4:30 p.m.Saint John
24h 55m
2 stops
LHR9:25 p.m.London Heathrow
27 May
LHR6:00 p.m.London Heathrow
25h 40m
2 stops
YSJ3:40 p.m.Saint John
C$ 1,148

momondo Fare Finder

 
Customize your flight search to find flights from Saint John to London that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 96,600 searches. Data last updated 8 May 2026.
Use the filters below to find and compare flights from Saint John to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Tue 2/6

12:20 p.m.-6:35 a.m.

1 stop14h 15m

London Heathrow

Tue 9/6

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

1 stop10h 20m

C$ 1,057

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Tue 2/6

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

1 stop10h 00m

London Heathrow

Tue 9/6

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

1 stop10h 20m

C$ 1,060

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Fri 2/10

12:50 p.m.-10:00 a.m.

2 stops17h 10m

London Heathrow

Tue 6/10

6:00 a.m.-3:49 p.m.

2 stops37h 49m

C$ 1,068

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Tue 2/6

4:30 p.m.-9:35 a.m.

2 stops13h 05m

London Heathrow

Tue 9/6

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

1 stop10h 20m

C$ 1,071
Quickest round-trip

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Fri 2/10

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

1 stop10h 00m

London Heathrow

Tue 6/10

9:30 a.m.-3:49 p.m.

1 stop10h 19m

C$ 1,077

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Tue 2/6

4:30 p.m.-9:35 a.m.

2 stops13h 05m

London Heathrow

Tue 9/6

2:05 p.m.-11:52 p.m.

2 stops13h 47m

C$ 1,081

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Tue 2/6

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

1 stop13h 30m

London Heathrow

Tue 9/6

2:05 p.m.-11:52 p.m.

2 stops13h 47m

C$ 1,086

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Mon 18/5

4:30 p.m.-9:25 p.m.

2 stops24h 55m

London Heathrow

Wed 27/5

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

2 stops27h 00m

C$ 1,146

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Mon 18/5

4:30 p.m.-9:25 p.m.

2 stops24h 55m

London Heathrow

Wed 27/5

8:00 a.m.-3:40 p.m.

2 stops35h 40m

C$ 1,147

Saint JohnLondon

YSJ - LGW

YSJLGW

Saint John

Sat 20/6

4:35 p.m.-7:55 a.m.

3 stops35h 20m

London Gatwick

Sat 27/6

11:35 a.m.-11:50 p.m.

2 stops16h 15m

C$ 1,506

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to London from

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

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 month to fly to London?

In general, November is the cheapest month to fly from Saint John to London. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around C$ 0. If you aren’t able to travel to London during the month of November, then flying in January is also cheap. Prices for this month can be found on momondo for an average of C$ 0.

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

20h 15m

Direct flights

None
The fastest flight from Saint John to London takes 20h 15m
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 20h 15m.

  • 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?

  • 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?

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 CanadaPriceFrom C$ 1,116Free CancellationRating
7.1
11,002 reviews
Search Air Canada flights

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Hounslow
Milton Keynes
Wembley
Slough
Gatwick
Wokingham
Crawley
Feltham
Hayes
Waterlooville
Chelmsford
Basingstoke
Dover
Worthing
Woking
Ipswich
Enfield
Maidstone
Harrow
Luton

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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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
London City Airport
London Gatwick Airport
London Heathrow Airport
London Luton Airport
London Southend Airport
London Stansted Airport