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Cheap flights from Saint John to London from C$ 792

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 7/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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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.
United Airlines Logo
11:55 a.m. - 10:40 a.m.
YSJ
-
LHR
18h 45m
2 stops
United Airlines Logo
7:45 a.m. - 11:15 a.m.
LHR
-
YSJ
31h 30m
2 stops
C$ 1,149United Airlines
Thu, 16 Apr - Thu, 23 Apr
United Airlines Logo
11:55 a.m. - 9:25 p.m.
YSJ
-
LHR
29h 30m
2 stops
United Airlines Logo
10:25 a.m. - 11:15 a.m.
LHR
-
YSJ
28h 50m
2 stops
C$ 1,155United Airlines
Tue, 21 Apr - Tue, 28 Apr
United Airlines Logo
5:35 a.m. - 6:45 a.m.
YSJ
-
LHR
21h 10m
2 stops
United Airlines Logo
4:40 p.m. - 11:15 a.m.
LHR
-
YSJ
22h 35m
2 stops
C$ 1,156United Airlines
Tue, 14 Apr - Sun, 19 Apr
United Airlines Logo
5:35 a.m. - 11:55 a.m.
YSJ
-
LHR
26h 20m
2 stops
United Airlines Logo
12:15 p.m. - 3:40 p.m.
LHR
-
YSJ
31h 25m
2 stops
C$ 1,159United Airlines
Fri, 24 Apr - Sun, 3 May
United Airlines Logo
5:35 a.m. - 6:45 a.m.
YSJ
-
LHR
21h 10m
2 stops
United Airlines Logo
11:05 a.m. - 11:52 p.m.
LHR
-
YSJ
16h 47m
2 stops
C$ 1,166United Airlines
Fri, 24 Apr - Fri, 1 May
Air Canada Logo
11:55 a.m. - 10:00 a.m.
YSJ
-
LHR
18h 05m
1 stop
Air Canada Logo
8:45 a.m. - 11:15 a.m.
LHR
-
YSJ
30h 30m
2 stops
C$ 1,330Air Canada
Tue, 21 Apr - Tue, 28 Apr
Multiple Airlines Logo
5:35 a.m. - 7:15 a.m.
YSJ
-
LHR
21h 40m
2 stops
Multiple Airlines Logo
9:30 a.m. - 3:40 p.m.
LHR
-
YSJ
10h 10m
1 stop
C$ 1,346Multiple Airlines
Fri, 24 Apr - Fri, 1 May
Air Canada Logo
11:55 a.m. - 10:00 a.m.
YSJ
-
LHR
18h 05m
1 stop
Air Canada Logo
2:10 p.m. - 11:52 p.m.
LHR
-
YSJ
13h 42m
1 stop
C$ 1,351Air Canada
Tue, 21 Apr - Tue, 28 Apr
Multiple Airlines Logo
10:45 a.m. - 6:10 p.m.
YSJ
-
LGW
27h 25m
2 stops
Multiple Airlines Logo
8:55 a.m. - 11:52 p.m.
LGW
-
YSJ
18h 57m
2 stops
C$ 1,356Multiple Airlines
Fri, 8 May - Fri, 15 May
Air Canada Logo
11:55 a.m. - 6:30 a.m.
YSJ
-
LHR
14h 35m
1 stop
Air Canada Logo
2:05 p.m. - 11:10 a.m.
LHR
-
YSJ
25h 05m
1 stop
C$ 1,410Air Canada
Fri, 17 Apr - Wed, 22 Apr

Air Canada flights from Saint John to London

Our best Air Canada deals on Saint John to London flight tickets
Air Canada
21 Apr
YSJ11:55 a.m.Saint John
18h 05m
1 stop
LHR10:00 a.m.London Heathrow
28 Apr
LHR8:45 a.m.London Heathrow
30h 30m
2 stops
YSJ11:15 a.m.Saint John
C$ 1,330
Air Canada
21 Apr
YSJ11:55 a.m.Saint John
18h 05m
1 stop
LHR10:00 a.m.London Heathrow
28 Apr
LHR2:10 p.m.London Heathrow
13h 42m
1 stop
YSJ11:52 p.m.Saint John
C$ 1,351
Air Canada
17 Apr
YSJ11:55 a.m.Saint John
14h 35m
1 stop
LHR6:30 a.m.London Heathrow
22 Apr
LHR2:10 p.m.London Heathrow
25h 00m
2 stops
YSJ11:10 a.m.Saint John
C$ 1,410

United Airlines flights from Saint John to London

Our best United Airlines deals on Saint John to London flight tickets
United Airlines
16 Apr
YSJ11:55 a.m.Saint John
18h 45m
2 stops
LHR10:40 a.m.London Heathrow
22 Apr
LHR9:30 a.m.London Heathrow
29h 40m
2 stops
YSJ11:10 a.m.Saint John
C$ 1,149
United Airlines
21 Apr
YSJ11:55 a.m.Saint John
29h 30m
2 stops
LHR9:25 p.m.London Heathrow
28 Apr
LHR10:25 a.m.London Heathrow
28h 50m
2 stops
YSJ11:15 a.m.Saint John
C$ 1,155
United Airlines
14 Apr
YSJ5:35 a.m.Saint John
23h 25m
2 stops
LHR9:00 a.m.London Heathrow
23 Apr
LHR4:40 p.m.London Heathrow
22h 35m
2 stops
YSJ11:15 a.m.Saint John
C$ 1,156

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 28 March 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

Thu 16/4

11:55 a.m.-10:40 a.m.

2 stops18h 45m

London Heathrow

Thu 23/4

7:45 a.m.-11:15 a.m.

2 stops31h 30m

C$ 1,149

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Tue 21/4

11:55 a.m.-9:25 p.m.

2 stops29h 30m

London Heathrow

Tue 28/4

10:25 a.m.-11:15 a.m.

2 stops28h 50m

C$ 1,155

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Tue 14/4

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

2 stops21h 10m

London Heathrow

Sun 19/4

4:40 p.m.-11:15 a.m.

2 stops22h 35m

C$ 1,156

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Fri 24/4

5:35 a.m.-11:55 a.m.

2 stops26h 20m

London Heathrow

Sun 3/5

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

2 stops31h 25m

C$ 1,159

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Fri 24/4

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

2 stops21h 10m

London Heathrow

Fri 1/5

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

2 stops16h 47m

C$ 1,166

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Tue 21/4

11:55 a.m.-10:00 a.m.

1 stop18h 05m

London Heathrow

Tue 28/4

8:45 a.m.-11:15 a.m.

2 stops30h 30m

C$ 1,330

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Fri 24/4

5:35 a.m.-7:15 a.m.

2 stops21h 40m

London Heathrow

Fri 1/5

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

1 stop10h 10m

C$ 1,346
Quickest round-trip

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Tue 21/4

11:55 a.m.-10:00 a.m.

1 stop18h 05m

London Heathrow

Tue 28/4

2:10 p.m.-11:52 p.m.

1 stop13h 42m

C$ 1,351

Saint JohnLondon

YSJ - LGW

YSJLGW

Saint John

Fri 8/5

10:45 a.m.-6:10 p.m.

2 stops27h 25m

London Gatwick

Fri 15/5

8:55 a.m.-11:52 p.m.

2 stops18h 57m

C$ 1,356

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Fri 17/4

11:55 a.m.-6:30 a.m.

1 stop14h 35m

London Heathrow

Wed 22/4

2:05 p.m.-11:10 a.m.

1 stop25h 05m

C$ 1,410

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 airline that flies from Saint John to London?

Air Canada and United Airlines are the most popular carriers operating from Saint John to London

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

21h 10m

Direct flights

None
The fastest flight from Saint John to London takes 21h 10m
There are no direct flights from Saint John to London. There are no popular flight routes from Saint John to London.
Search flight deals

  • 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 21h 10m.

  • 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$ 1,172Free CancellationRating
7.1
10,853 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
Wembley
Ilford
Slough
Gatwick
Wokingham
Crawley
Feltham
Hayes
Waterlooville
Newport
Chelmsford
Basingstoke
Milton Keynes
Dover
Worthing
Guildford
Ipswich
Maidstone
Woking

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