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Cheap flights from Saint John to London from C$ 705

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 11/8. 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

Discover deals from 900+ travel sites with momondo.

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
5:40 a.m. - 11:50 a.m.
YSJ
-
LHR
26h 10m
1 stop
Air Canada Logo
11:05 a.m. - 3:59 p.m.
LHR
-
YSJ
32h 54m
2 stops
C$ 1,144Air Canada
Fri, 9 Oct - Sun, 11 Oct
Air Canada Logo
5:40 a.m. - 11:50 a.m.
YSJ
-
LHR
26h 10m
1 stop
Air Canada Logo
11:05 a.m. - 3:59 p.m.
LHR
-
YSJ
32h 54m
2 stops
C$ 1,147Air Canada
Fri, 9 Oct - Sun, 11 Oct
Air Canada Logo
4:40 p.m. - 11:50 a.m.
YSJ
-
LHR
15h 10m
2 stops
Air Canada Logo
11:05 a.m. - 3:59 p.m.
LHR
-
YSJ
32h 54m
2 stops
C$ 1,148Air Canada
Fri, 9 Oct - Sun, 11 Oct
Air Canada Logo
4:40 p.m. - 11:50 a.m.
YSJ
-
LHR
15h 10m
2 stops
Air Canada Logo
11:05 a.m. - 3:59 p.m.
LHR
-
YSJ
32h 54m
2 stops
C$ 1,151Air Canada
Fri, 9 Oct - Sun, 11 Oct
United Airlines Logo
6:00 p.m. - 9:10 a.m.
YSJ
-
LHR
36h 10m
2 stops
United Airlines Logo
6:00 p.m. - 10:25 a.m.
LHR
-
YSJ
44h 25m
2 stops
C$ 1,157United Airlines
Sat, 31 Oct - Tue, 10 Nov
United Airlines Logo
6:00 p.m. - 9:10 a.m.
YSJ
-
LHR
36h 10m
2 stops
United Airlines Logo
6:00 p.m. - 10:25 a.m.
LHR
-
YSJ
44h 25m
2 stops
C$ 1,160United Airlines
Sat, 31 Oct - Tue, 10 Nov
United Airlines Logo
6:00 p.m. - 9:10 a.m.
YSJ
-
LHR
36h 10m
2 stops
United Airlines Logo
7:40 a.m. - 11:24 p.m.
LHR
-
YSJ
19h 44m
2 stops
C$ 1,162United Airlines
Sat, 31 Oct - Thu, 12 Nov
United Airlines Logo
6:00 p.m. - 9:10 a.m.
YSJ
-
LHR
36h 10m
2 stops
United Airlines Logo
10:25 a.m. - 11:24 p.m.
LHR
-
YSJ
16h 59m
2 stops
C$ 1,167United Airlines
Sat, 31 Oct - Thu, 12 Nov
Multiple Airlines Logo
11:05 a.m. - 6:30 a.m.
YSJ
-
LHR
16h 25m
2 stops
Multiple Airlines Logo
9:00 a.m. - 11:24 p.m.
LHR
-
YSJ
18h 24m
2 stops
C$ 1,287Multiple Airlines
Sat, 31 Oct - Wed, 11 Nov
Multiple Airlines Logo
11:05 a.m. - 6:30 a.m.
YSJ
-
LHR
16h 25m
2 stops
Multiple Airlines Logo
9:00 a.m. - 11:24 p.m.
LHR
-
YSJ
18h 24m
2 stops
C$ 1,289Multiple Airlines
Sat, 31 Oct - Wed, 11 Nov

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Lufthansa flights from Saint John to London Heathrow Airport

Our best Lufthansa deals on Saint John to London Heathrow Airport flight tickets
Lufthansa
31 Oct
YSJ6:00 p.m.Saint John
14h 20m
1 stop
LHR11:20 a.m.London Heathrow
11 Nov
LHR1:00 p.m.London Heathrow
25h 25m
1 stop
YSJ10:25 a.m.Saint John
C$ 1,381
Lufthansa
31 Oct
YSJ5:15 a.m.Saint John
27h 05m
1 stop
LHR11:20 a.m.London Heathrow
11 Nov
LHR1:00 p.m.London Heathrow
25h 25m
1 stop
YSJ10:25 a.m.Saint John
C$ 1,395

Air Canada flights from Saint John to London Heathrow Airport

Our best Air Canada deals on Saint John to London Heathrow Airport flight tickets
Air Canada
9 Oct
YSJ5:40 a.m.Saint John
26h 10m
1 stop
LHR11:50 a.m.London Heathrow
11 Oct
LHR11:05 a.m.London Heathrow
32h 54m
2 stops
YSJ3:59 p.m.Saint John
C$ 1,144
Air Canada
9 Oct
YSJ5:40 a.m.Saint John
26h 10m
1 stop
LHR11:50 a.m.London Heathrow
11 Oct
LHR11:05 a.m.London Heathrow
32h 54m
2 stops
YSJ3:59 p.m.Saint John
C$ 1,147
Air Canada
9 Oct
YSJ4:40 p.m.Saint John
15h 10m
2 stops
LHR11:50 a.m.London Heathrow
11 Oct
LHR11:05 a.m.London Heathrow
32h 54m
2 stops
YSJ3:59 p.m.Saint John
C$ 1,148

momondo Fare Finder

 
Customize your flight search to find flights from Saint John to London Heathrow Airport 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 June 2026.
Use the filters below to find and compare flights from Saint John to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Fri 9/10

5:40 a.m.-11:50 a.m.

1 stop26h 10m

London Heathrow

Sun 11/10

11:05 a.m.-3:59 p.m.

2 stops32h 54m

C$ 1,144

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Fri 9/10

5:40 a.m.-11:50 a.m.

1 stop26h 10m

London Heathrow

Sun 11/10

11:05 a.m.-3:59 p.m.

2 stops32h 54m

C$ 1,147

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Fri 9/10

4:40 p.m.-11:50 a.m.

2 stops15h 10m

London Heathrow

Sun 11/10

11:05 a.m.-3:59 p.m.

2 stops32h 54m

C$ 1,148

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Fri 9/10

4:40 p.m.-11:50 a.m.

2 stops15h 10m

London Heathrow

Sun 11/10

11:05 a.m.-3:59 p.m.

2 stops32h 54m

C$ 1,151

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Sat 31/10

6:00 p.m.-9:10 a.m.

2 stops36h 10m

London Heathrow

Tue 10/11

6:00 p.m.-10:25 a.m.

2 stops44h 25m

C$ 1,157

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Sat 31/10

6:00 p.m.-9:10 a.m.

2 stops36h 10m

London Heathrow

Tue 10/11

6:00 p.m.-10:25 a.m.

2 stops44h 25m

C$ 1,160

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Sat 31/10

6:00 p.m.-9:10 a.m.

2 stops36h 10m

London Heathrow

Thu 12/11

7:40 a.m.-11:24 p.m.

2 stops19h 44m

C$ 1,162

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Sat 31/10

6:00 p.m.-9:10 a.m.

2 stops36h 10m

London Heathrow

Thu 12/11

10:25 a.m.-11:24 p.m.

2 stops16h 59m

C$ 1,167
Quickest round-trip

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Sat 31/10

11:05 a.m.-6:30 a.m.

2 stops16h 25m

London Heathrow

Wed 11/11

9:00 a.m.-11:24 p.m.

2 stops18h 24m

C$ 1,287

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Sat 31/10

11:05 a.m.-6:30 a.m.

2 stops16h 25m

London Heathrow

Wed 11/11

9:00 a.m.-11:24 p.m.

2 stops18h 24m

C$ 1,289

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 Heathrow Airport

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 Heathrow?

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

When to book flights from Saint John to London Heathrow Airport

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

Cheap Saint John to London Heathrow Airport (YSJ to LHR) flight deals and tips

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

Fastest flight time

16h 05m

Direct flights

None
The fastest flight from Saint John to London Heathrow Airport takes 16h 05m
There are no direct flights from Saint John to London Heathrow Airport. There are no popular flight routes from Saint John to London Heathrow Airport.
Search flight deals

Frequently asked questions about flying from Saint John to London Heathrow Airport

  • How far is Saint John to London Heathrow by plane?

    Saint John and London Heathrow are 4726.9 km apart from one another. By plane, this route typically takes 16h 05m.

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

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

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

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

    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 Heathrow Airport.

  • What documentation or ID do you need to fly to London Heathrow Airport?

    The travel and health documents required for your trip to London Heathrow Airport 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 Heathrow Airport. 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 Heathrow Airport?

Best airlines flying from Saint John to London Heathrow Airport

Compare and see reviews for airlines that fly from Saint John to London Heathrow Airport with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom C$ 1,215Free CancellationRating
7.1
11,269 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
Stratford-upon-Avon
Poole
Milton Keynes
Northampton
Wembley
Slough
Gatwick
Ramsgate
Kenilworth
Staines-upon-Thames
Swindon
Wokingham
Salisbury
Crawley
Croydon
Hayes
Feltham
Richmond
Chelmsford

Why use momondo?

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

Finding the right flight to London from Saint John is quick and easy when you have a range of options in front of you, from reputable agents and recognizable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to London quick and easy, saving you time and money.

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

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

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?

Price alerts on flights to London from Saint John are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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