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Cheap flights from the United Kingdom to Saint John from C$ 602

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/6. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — YSJ
20 May — 27 May1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from United Kingdom to St John

Enter your travel dates to find the best prices.

Cheapest flights from United Kingdom to St John
Explore the most affordable flight options available from United Kingdom to St John. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 April 2026.

Sat 30/56:00 a.m.
LHR
-
YSJ
2 stops21h 52m
Air Canada
Sat 6/64:30 p.m.
YSJ
-
LHR
1 stop10h 00m
Air Canada
Deal found 15/4C$ 1,039
Fri 8/58:40 a.m.
LHR
-
YSJ
2 stops35h 00m
Air Canada
Fri 29/55:00 a.m.
YSJ
-
LHR
1 stop21h 35m
Air Canada
Deal found 17/4C$ 1,057
Mon 1/65:15 p.m.
LHR
-
YSJ
2 stops34h 37m
Air Canada
Mon 8/612:20 p.m.
YSJ
-
LHR
1 stop17h 15m
Air Canada
Deal found 17/4C$ 1,062
Thu 14/57:30 p.m.
LHR
-
YSJ
2 stops32h 22m
Air Canada
Mon 18/54:30 p.m.
YSJ
-
LHR
1 stop13h 30m
Air Canada
Deal found 19/4C$ 1,081

Find flight deals from United Kingdom to St John

Keep the following information in mind while searching for United Kingdom to St John flight deals. Data was last updated 20 April 2026.

Round-trip from

C$ 1,039

One-way from

C$ 602

Popular in

January

Cheapest in

February

Average price

C$ 991
Air Canada
  • Air Canada
  • 30/5-6/6
  • 3 total stops
  • 31h 52m total
  • United Kingdom to Saint John
Search Deals
1/6
  • 1/6
  • 3 total stops
  • 41h 10m total
  • United Kingdom to Saint John
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (C$ 211 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 47 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from United Kingdom to St John 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, Cheapflights users made 629,999 searches. Data last updated 20 April 2026.
Use the filters below to find and compare flights from the United Kingdom to Saint John that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

LondonSaint John

LHR - YSJ

LHRYSJ

London Heathrow

Sat 30/5

6:00 a.m.-11:52 p.m.

2 stops21h 52m

Saint John

Sat 6/6

4:30 p.m.-6:30 a.m.

1 stop10h 00m

C$ 1,039

LondonSaint John

LHR - YSJ

LHRYSJ

London Heathrow

Mon 1/6

5:15 p.m.-11:52 p.m.

2 stops34h 37m

Saint John

Mon 8/6

12:20 p.m.-9:35 a.m.

1 stop17h 15m

C$ 1,062

LondonSaint John

LHR - YSJ

LHRYSJ

London Heathrow

Fri 8/5

8:40 a.m.-3:40 p.m.

2 stops35h 00m

Saint John

Fri 29/5

4:30 p.m.-9:00 p.m.

2 stops24h 30m

C$ 1,073

LondonSaint John

LHR - YSJ

LHRYSJ

London Heathrow

Thu 14/5

7:30 p.m.-11:52 p.m.

2 stops32h 22m

Saint John

Mon 18/5

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

1 stop13h 30m

C$ 1,081

LondonSaint John

LHR - YSJ

LHRYSJ

London Heathrow

Thu 7/5

8:45 a.m.-11:52 p.m.

2 stops19h 07m

Saint John

Mon 11/5

12:50 p.m.-9:00 p.m.

2 stops28h 10m

C$ 1,147
Cheapest one-way

LondonSaint John

LHR - YSJ

LHRYSJ

London Heathrow

Mon 1/6

8:50 p.m.-10:00 a.m.

3 stops41h 10m

C$ 602

LondonSaint John

LHR - YSJ

LHRYSJ

London Heathrow

Fri 29/5

6:40 a.m.-11:57 a.m.

3 stops33h 17m

C$ 839
Quickest one-way

LondonSaint John

LHR - YSJ

LHRYSJ

London Heathrow

Mon 1/6

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

1 stop13h 42m

C$ 1,021

LondonSaint John

LHR - YSJ

LHRYSJ

London Heathrow

Tue 2/6

4:40 p.m.-3:50 p.m.

2 stops51h 10m

C$ 2,101

Flights are sorted by cheapest round-trip flights first.

Deals found on 17/4

Sorted by cheapest first

Best time to book a flight from United Kingdom to St John

Have a flexible travel schedule? Discover the best time to fly to St John from United Kingdom with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from the United Kingdom to Saint John

What is the cheapest month to book a flight from United Kingdom to Saint John?

Currently, October is the cheapest month in which you can book a flight from United Kingdom to Saint John (average of C$ 638). Flying from United Kingdom to Saint John in January is currently the most expensive (average of C$ 1,264). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from United Kingdom to St John. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Saint John from United Kingdom?

    For a flight from United Kingdom to Saint John, you will be flying into Saint John. Saint John (YSJ) is just 15.1 km from the centre of the city.

  • How long is the flight from United Kingdom to Saint John?

    Airlines like Air Canada fly from United Kingdom to Saint John in about 21h 52m. The time it takes to get you to your destination can typically vary by up to . The distance from United Kingdom to Saint John is about 4712 km.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from United Kingdom 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.

  • What is the cheapest month to book a flight from United Kingdom to Saint John?

    Currently, October is the cheapest month in which you can book a flight from United Kingdom to Saint John (average of C$ 638). Flying from United Kingdom to Saint John in January is currently the most expensive (average of C$ 1,264). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Deals for United Kingdom to St John flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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

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

Need flexible booking options for your flight to St John from United Kingdom? 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 United Kingdom to St John become cheaper?

Yes! Start tracking prices for United Kingdom to St John flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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