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Cheap flights from Saint John to London from C$ 665

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 6/5. 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
3:20 p.m. - 11:10 a.m.
LHR
-
YSJ
23h 50m
2 stops
C$ 1,143United Airlines
Thu, 16 Apr - Fri, 24 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$ 1,149United Airlines
Tue, 21 Apr - Tue, 28 Apr
United Airlines Logo
5:35 a.m. - 6:55 a.m.
YSJ
-
LHR
21h 20m
2 stops
United Airlines Logo
9:30 a.m. - 11:10 a.m.
LHR
-
YSJ
29h 40m
2 stops
C$ 1,150United Airlines
Tue, 14 Apr - Wed, 22 Apr
United Airlines Logo
5:35 a.m. - 10:25 a.m.
YSJ
-
LHR
24h 50m
2 stops
United Airlines Logo
12:15 p.m. - 3:40 p.m.
LHR
-
YSJ
31h 25m
2 stops
C$ 1,153United Airlines
Fri, 24 Apr - Thu, 30 Apr
United Airlines Logo
4:30 p.m. - 10:25 a.m.
YSJ
-
LHR
13h 55m
2 stops
United Airlines Logo
2:10 p.m. - 11:52 p.m.
LHR
-
YSJ
37h 42m
2 stops
C$ 1,156United Airlines
Tue, 5 May - Tue, 12 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$ 1,160United Airlines
Fri, 24 Apr - Fri, 1 May
Air Canada Logo
4:30 p.m. - 10:00 a.m.
YSJ
-
LHR
13h 30m
1 stop
Air Canada Logo
9:30 a.m. - 3:49 p.m.
LHR
-
YSJ
10h 19m
1 stop
C$ 1,284Air Canada
Mon, 7 Sep - Wed, 23 Sep
Air Canada Logo
4:30 p.m. - 10:00 a.m.
YSJ
-
LHR
13h 30m
1 stop
Air Canada Logo
9:30 a.m. - 11:51 p.m.
LHR
-
YSJ
18h 21m
2 stops
C$ 1,295Air Canada
Mon, 7 Sep - Wed, 23 Sep
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$ 1,322Air 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$ 1,339Multiple Airlines
Fri, 24 Apr - Fri, 1 May

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
7 Sep
YSJ4:30 p.m.Saint John
13h 30m
1 stop
LHR10:00 a.m.London Heathrow
23 Sep
LHR9:30 a.m.London Heathrow
10h 19m
1 stop
YSJ3:49 p.m.Saint John
C$ 1,284
Air Canada
7 Sep
YSJ4:30 p.m.Saint John
13h 30m
1 stop
LHR10:00 a.m.London Heathrow
23 Sep
LHR9:30 a.m.London Heathrow
18h 21m
2 stops
YSJ11:51 p.m.Saint John
C$ 1,295
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$ 1,322

United Airlines flights from Saint John to London Heathrow Airport

Our best United Airlines deals on Saint John to London Heathrow Airport flight tickets
United Airlines
16 Apr
YSJ11:55 a.m.Saint John
18h 45m
2 stops
LHR10:40 a.m.London Heathrow
20 Apr
LHR10:25 a.m.London Heathrow
28h 50m
2 stops
YSJ11:15 a.m.Saint John
C$ 1,143
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$ 1,149
United Airlines
14 Apr
YSJ5:35 a.m.Saint John
23h 45m
2 stops
LHR9:20 a.m.London Heathrow
20 Apr
LHR4:40 p.m.London Heathrow
22h 35m
2 stops
YSJ11:15 a.m.Saint John
C$ 1,150

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 26 March 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

Thu 16/4

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

2 stops18h 45m

London Heathrow

Fri 24/4

3:20 p.m.-11:10 a.m.

2 stops23h 50m

C$ 1,143

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$ 1,149

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Tue 14/4

5:35 a.m.-6:55 a.m.

2 stops21h 20m

London Heathrow

Wed 22/4

9:30 a.m.-11:10 a.m.

2 stops29h 40m

C$ 1,150

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Fri 24/4

5:35 a.m.-10:25 a.m.

2 stops24h 50m

London Heathrow

Thu 30/4

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

2 stops31h 25m

C$ 1,153

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Tue 5/5

4:30 p.m.-10:25 a.m.

2 stops13h 55m

London Heathrow

Tue 12/5

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

2 stops37h 42m

C$ 1,156

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$ 1,160
Quickest round-trip

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Mon 7/9

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

1 stop13h 30m

London Heathrow

Wed 23/9

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

1 stop10h 19m

C$ 1,284

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Mon 7/9

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

1 stop13h 30m

London Heathrow

Wed 23/9

9:30 a.m.-11:51 p.m.

2 stops18h 21m

C$ 1,295

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$ 1,322

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$ 1,339

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 typical price of a round-trip flight between Saint John and London Heathrow Airport?

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

10h 00m

Direct flights

None
The fastest flight from Saint John to London Heathrow Airport takes 10h 00m
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

  • 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 10h 00m.

  • 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$ 1,166Free CancellationRating
7.1
10,842 reviews
Search Air Canada flights

Travelling to a place near London?

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Hayes
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Newport
Chelmsford
Basingstoke
Milton Keynes
Dover
Worthing

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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