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Cheap flights from London Heathrow Airport to Saint John from C$ 922

LHR — YSJ
26 Nov — 3 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Heathrow to St John

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to St John

Sun 8/116:00 a.m. -
2 stops32h 19m
Sun 15/115:35 p.m. -
2 stops32h 55m
Deal found 23/10C$ 1,102
Mon 7/129:00 a.m. -
2 stops29h 25m
Mon 14/125:20 a.m. -
2 stops21h 10m
Deal found 23/10C$ 1,123
Mon 23/119:00 a.m. -
2 stops29h 19m
Mon 30/115:20 a.m. -
2 stops21h 10m
Deal found 26/10C$ 1,125
Sun 22/116:00 a.m. -
2 stops32h 19m
Sun 29/115:35 p.m. -
2 stops23h 25m
Deal found 25/10C$ 1,127
Mon 16/119:00 a.m. -
2 stops29h 19m
Sun 22/115:35 p.m. -
2 stops23h 25m
Deal found 21/10C$ 1,130
Fri 6/116:50 a.m. -
2 stops31h 29m
Sun 8/115:20 a.m. -
2 stops35h 40m
Deal found 21/10C$ 1,148
Sat 21/116:00 a.m. -
2 stops21h 28m
Sat 28/115:20 a.m. -
2 stops21h 50m
Deal found 24/10C$ 1,163
Wed 9/129:00 a.m. -
2 stops29h 25m
Wed 16/125:20 a.m. -
2 stops21h 50m
Deal found 25/10C$ 1,183

Find flight deals from Heathrow to St John

Round-trip from

C$ 1,102

One-way from

C$ 922

Popular in

December

Cheapest in

February

Average price

C$ 977
Air Canada
  • Air Canada
  • 8/11-15/11
  • 4 total stops
  • 65h 14m total
  • London to Saint John
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Air Canada
  • Air Canada
  • 16/11-31/12
  • 2 total stops
  • 21h 26m total
  • London to Saint John
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (C$ 275 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 49 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2026
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Cheapflights Fare Finder

 
Use the filters below to find and compare flights from London Heathrow Airport to Saint John that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LondonSaint John

LHR London Heathrow - YSJ Saint John

LHRYSJ

London Heathrow

Tue 17/11

11:10 a.m.-10:19 a.m.

3 stops27h 09m

Saint John

Wed 31/12

12:00 a.m.-5:00 a.m.

Nonstop0h 00m

C$ 1,016

LondonSaint John

LHR London Heathrow - YSJ Saint John

LHRYSJ

London Heathrow

Mon 7/12

9:00 a.m.-10:25 a.m.

2 stops29h 25m

Saint John

Mon 14/12

5:20 a.m.-6:30 a.m.

2 stops21h 10m

C$ 1,123

LondonSaint John

LHR London Heathrow - YSJ Saint John

LHRYSJ

London Heathrow

Mon 23/11

9:00 a.m.-10:19 a.m.

2 stops29h 19m

Saint John

Mon 30/11

5:20 a.m.-6:30 a.m.

2 stops21h 10m

C$ 1,125

LondonSaint John

LHR London Heathrow - YSJ Saint John

LHRYSJ

London Heathrow

Mon 16/11

9:00 a.m.-10:19 a.m.

2 stops29h 19m

Saint John

Sun 22/11

5:35 p.m.-9:00 p.m.

2 stops23h 25m

C$ 1,130

LondonSaint John

LHR London Heathrow - YSJ Saint John

LHRYSJ

London Heathrow

Tue 3/11

3:00 p.m.-10:19 a.m.

2 stops23h 19m

Saint John

Wed 31/12

12:00 a.m.-5:00 a.m.

Nonstop0h 00m

C$ 1,148

LondonSaint John

LHR London Heathrow - YSJ Saint John

LHRYSJ

London Heathrow

Fri 6/11

6:50 a.m.-10:19 a.m.

2 stops31h 29m

Saint John

Sun 8/11

5:20 a.m.-9:00 p.m.

2 stops35h 40m

C$ 1,148

LondonSaint John

LHR London Heathrow - YSJ Saint John

LHRYSJ

London Heathrow

Wed 9/12

9:00 a.m.-10:25 a.m.

2 stops29h 25m

Saint John

Wed 16/12

5:20 a.m.-7:10 a.m.

2 stops21h 50m

C$ 1,183

LondonSaint John

LHR London Heathrow - YSJ Saint John

LHRYSJ

London Heathrow

Sun 22/11

3:00 p.m.-11:38 p.m.

1 stop12h 38m

Saint John

Sun 29/11

5:20 a.m.-7:10 a.m.

2 stops21h 50m

C$ 1,189

LondonSaint John

LHR London Heathrow - YSJ Saint John

LHRYSJ

London Heathrow

Sat 31/10

9:00 a.m.-11:25 a.m.

3 stops29h 25m

Saint John

Wed 31/12

12:00 a.m.-5:00 a.m.

Nonstop0h 00m

C$ 1,193

LondonSaint John

LHR London Heathrow - YSJ Saint John

LHRYSJ

London Heathrow

Sat 31/10

6:25 a.m.-12:28 a.m.

2 stops45h 03m

Saint John

Wed 31/12

12:00 a.m.-5:00 a.m.

Nonstop0h 00m

C$ 1,616

Flights are sorted by cheapest round-trip flights first.

Deals found on 22/10

Showing 1-10 of 14 resultsSorted by cheapest first
1
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Best time to book a flight from Heathrow to St John

Have a flexible travel schedule? Discover the best time to fly to St John from Heathrow with our price prediction graph.
Estimated round-trip price

Related info for your journey

  • What airport do you fly into for flights to Saint John from London Heathrow?

    For a flight from London Heathrow to Saint John, you will be flying into Saint John. Saint John (YSJ) is just 15.1 km from the centre of the city. Saint John is the only Saint John airport and it handles 0 inbound flights from London Heathrow per day. 0 airlines have flights to Saint John from London Heathrow on a regular basis.

  • How long is the flight from London Heathrow Airport to Saint John?

    A quick flight from London Heathrow Airport to Saint John can take about 29h 25m. Air Canada provides one of the quickest options available for as low as C$ 1,123. The distance between London Heathrow Airport and Saint John is about 4712 km.

  • Can I find deals for flights from Heathrow to St John that include hotel bookings?

    Yes. In addition to deals on Heathrow to St John flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Heathrow to St John?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to St John.

  • Can I find deals for business class flights from Heathrow to St John?

    Yes. Cheapflights offers flight deals from Heathrow to St John by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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Why should you use Cheapflights to find cheap flight tickets from Heathrow to St John?

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Can Cheapflights find flights from Heathrow to St John with no change fees?

Need flexible booking options for your flight to St John from Heathrow? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Heathrow to St John become cheaper?

Yes, Cheapflights offers price alerts on Heathrow to St John flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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