YSJ - LHR

C$ 855 Find Cheap Flights from Saint John to London – Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
C$ 1,141
Typical prices: C$ 1,252-C$ 1,519
Air Canada
Thu 18/1Mon 22/1
YSJ - LHR • 1 stop
When to travel
January
Cheapest • 12% price drop
November
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Montreal Pierre Elliott Trudeau Intl (YUL)
Cheapest • Avg C$ 1,226 (round-trip)
Toronto Pearson Intl (YYZ)
Shortest trip • 14h 12m (one-way)
Insights
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We hope you enjoy your trip to London Heathrow Airport!
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Flight Deals

Cheap Flights from Saint John to Heathrow (YSJ-LHR)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Saint John to Heathrow

Mon, 18 Jan - Fri, 22 Jan
Air Canada Logo
11:05 a.m. - 7:10 a.m.YSJ  Saint John-LHR London Heathrow
16h 05m1 stop Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
6:00 a.m. - 11:54 p.m.LHR  London Heathrow-YSJ Saint John
21h 54m2 stops Zurich Toronto Pearson Intl
C$ 1,141Air Canada
3+ days ago
Mon, 18 Jan - Fri, 22 Jan
Air Canada Logo
11:05 a.m. - 8:30 a.m.YSJ  Saint John-LHR London Heathrow
17h 25m2 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl
Air Canada Logo
9:00 a.m. - 11:54 p.m.LHR  London Heathrow-YSJ Saint John
18h 54m2 stops Zurich Toronto Pearson Intl
C$ 1,152Air Canada
3+ days ago
Mon, 18 Jan - Fri, 22 Jan
Air Canada Logo
11:05 a.m. - 7:10 a.m.YSJ  Saint John-LHR London Heathrow
16h 05m1 stop Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
9:00 a.m. - 11:54 p.m.LHR  London Heathrow-YSJ Saint John
18h 54m2 stops Zurich Toronto Pearson Intl
C$ 1,158Air Canada
1 day ago
Mon, 18 Jan - Fri, 22 Jan
Air Canada Logo
11:05 a.m. - 7:10 a.m.YSJ  Saint John-LHR London Heathrow
16h 05m1 stop Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
6:00 a.m. - 11:54 p.m.LHR  London Heathrow-YSJ Saint John
21h 54m2 stops Zurich Toronto Pearson Intl
C$ 1,159Air Canada
2 days ago
Mon, 18 Jan - Fri, 22 Jan
Air Canada Logo
11:05 a.m. - 7:10 a.m.YSJ  Saint John-LHR London Heathrow
16h 05m1 stop Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
6:00 a.m. - 11:54 p.m.LHR  London Heathrow-YSJ Saint John
21h 54m2 stops Zurich Toronto Pearson Intl
C$ 1,161Air Canada
3+ days ago
Mon, 18 Jan - Fri, 22 Jan
Air Canada Logo
11:05 a.m. - 8:30 a.m.YSJ  Saint John-LHR London Heathrow
17h 25m2 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl
Air Canada Logo
9:00 a.m. - 11:54 p.m.LHR  London Heathrow-YSJ Saint John
18h 54m2 stops Zurich Toronto Pearson Intl
C$ 1,169Air Canada
1 day ago
Mon, 18 Jan - Fri, 22 Jan
Air Canada Logo
11:05 a.m. - 8:30 a.m.YSJ  Saint John-LHR London Heathrow
17h 25m2 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl
Air Canada Logo
9:00 a.m. - 11:54 p.m.LHR  London Heathrow-YSJ Saint John
18h 54m2 stops Zurich Toronto Pearson Intl
C$ 1,171Air Canada
2 days ago
Mon, 18 Jan - Fri, 22 Jan
Air Canada Logo
11:05 a.m. - 8:30 a.m.YSJ  Saint John-LHR London Heathrow
17h 25m2 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl
Air Canada Logo
9:00 a.m. - 11:54 p.m.LHR  London Heathrow-YSJ Saint John
18h 54m2 stops Zurich Toronto Pearson Intl
C$ 1,172Air Canada
3+ days ago
Mon, 18 Jan - Fri, 22 Jan
Air Canada Logo
11:05 a.m. - 7:10 a.m.YSJ  Saint John-LHR London Heathrow
16h 05m1 stop Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
3:00 p.m. - 11:54 p.m.LHR  London Heathrow-YSJ Saint John
12h 54m1 stop Toronto Pearson Intl
C$ 1,173Air Canada
3+ days ago
Mon, 18 Jan - Fri, 22 Jan
Air Canada Logo
5:15 a.m. - 8:30 a.m.YSJ  Saint John-LHR London Heathrow
23h 15m1 stop Toronto Pearson Intl
Air Canada Logo
6:50 a.m. - 10:25 a.m.LHR  London Heathrow-YSJ Saint John
31h 35m2 stops Brussels Bruxelles-National Montreal Pierre Elliott Trudeau Intl
C$ 1,175Air Canada
12 hours ago
Booking Insights

Price, demand, and travel trends for Saint John to London Heathrow Airport flights

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights with more confidence.

How much is a round-trip flight from Saint John to London Heathrow Airport?

Round-trip flights from Saint John to London Heathrow Airport typically range from C$ 1,252 to C$ 1,519. The lowest price found in the past 5 days was C$ 1,141, on Air Canada.

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Key details for Saint John to London Heathrow Airport flights

Low season

March

Cheapest flight

C$ 855
Beat the crowds with an average 74% drop in traveller numbers.
The most popular month to fly with an average 71% increase in traveller numbers.
One-way flight from Saint John to London Heathrow Airport

When to book flights from Saint John to Heathrow

Are your dates flexible? Find out the best times to travel from Saint John to Heathrow based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Saint John to London Heathrow Airport flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines, and booking tips.

  • Which cabin classes can I book on flights from Saint John to London Heathrow Airport?

    Only Economy Class is available on flights from Saint John to London Heathrow Airport.

  • How long does a flight from Saint John to London Heathrow Airport take?

    There are currently no direct flights available from Saint John to London Heathrow Airport. Flights with 1 layover take between 14h 12m and 14h 26m in total, depending on the connection.

  • Do I need a passport to fly from Saint John to London Heathrow Airport?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How much should I expect to pay for a Saint John to London Heathrow Airport flight?

    Round-trip flights from Saint John to London Heathrow Airport range from C$ 1,252 to C$ 1,519, with an average of C$ 1,366 over the past 12 months. Anything below C$ 1,252 counts as a good deal.

  • Have flight prices from Saint John to London Heathrow Airport changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about C$ 1,141 to C$ 6,382. That means the highest observed fare was about 6x higher than the lowest one.

  • What car rental options are available at London Heathrow Airport (LHR)?

    London Heathrow Airport (LHR) hosts 5 major car rental companies, with daily rates averaging C$ 54 for economy cars. Top options include:

    • GREEN MOTION
    • DRIVALIA
    • Europcar
    • Alamo
    • Hertz

  • Which airports can I use when flying from Saint John to London Heathrow Airport?

    Flights from Saint John to London Heathrow Airport usually depart from Saint John (YSJ) and arrive at London Heathrow (LHR).

  • Which airports do connecting flights from Saint John to London Heathrow Airport pass through?

    Connecting flights from Saint John to London Heathrow Airport most commonly pass through:

    • Montreal Pierre Elliott Trudeau Intl (YUL) – 54% of one-stop connections
    • Toronto Pearson Intl (YYZ) – 46% of one-stop connections

  • Can I save money by using flexible dates for flights from Saint John to London Heathrow Airport?

    Yes. Flexible dates can save you up to 19% on flights from Saint John to London Heathrow Airport. Friday is the cheapest departure day at C$ 1,252 round-trip on average, while Thursday is the most expensive at C$ 1,543, a difference of C$ 291.

    KAYAK's flexible dates feature shows options up to three days before and after your selected dates, making it easier to compare nearby fares.

  • How much time can I save by choosing a different layover airport when travelling from Saint John to London Heathrow Airport?

    Flying via Toronto Pearson Intl (YYZ) gives the shortest average 1-stop total travel time at 14h 12m, compared with 14h 26m via Montreal Pierre Elliott Trudeau Intl (YUL).

  • What is the time difference between Saint John and London Heathrow Airport?

    London Heathrow Airport is 3 hours ahead of Saint John (British Time vs Atlantic Time). Plan for the time shift when scheduling connections or first-day activities.

  • Which popular places can I visit in London Heathrow Airport?

    Some of the most popular sights in London Heathrow Airport are Trafalgar Square, Hyde Park, and London Eye. These are among the most viewed places in London Heathrow Airport on KAYAK.

Your guide to booking Saint John to London Heathrow Airport flights

Get tips on when to book, when to fly, and what to know before your trip.
  • If your dates are flexible, aim for a Friday departure and avoid flying on Thursday. On this route, Friday flights average C$ 1,252, about C$ 291 less than Thursday fares (19% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Saint John to London Heathrow Airport trip for January. Fares historically average C$ 1,204 round-trip in that month – typically C$ 359 less than the most expensive month, which is May (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to London Heathrow Airport.

    • Hilton London Heathrow Airport

More options for your flight from Saint John to Heathrow

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