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Cheap flights from Saint John to the United Kingdom from C$ 797

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 12/3. Fares are subject to change and may not be available on all flights or dates of travel.
YSJ — LHR
26 Feb — 5 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from St John to United Kingdom

Enter your travel dates to find the best prices.

Cheapest flights from St John to United Kingdom
Explore the most affordable flight options available from St John to United Kingdom. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 January 2026.

Thu 12/34:15 p.m.
YSJ
-
LHR
1 stop11h 55m
Air Canada
Thu 19/36:00 a.m.
LHR
-
YSJ
2 stops36h 40m
Air Canada
Deal found 26/1C$ 1,032
Thu 19/34:15 p.m.
YSJ
-
LHR
1 stop11h 55m
Air Canada
Mon 23/31:25 p.m.
LHR
-
YSJ
1 stop29h 10m
Air Canada
Deal found 25/1C$ 1,074
Fri 13/34:15 p.m.
YSJ
-
LHR
1 stop11h 55m
Air Canada
Fri 20/31:25 p.m.
LHR
-
YSJ
1 stop29h 10m
Air Canada
Deal found 27/1C$ 1,131
Sat 21/34:15 p.m.
YSJ
-
LHR
1 stop11h 55m
Air Canada
Sat 28/36:00 p.m.
LHR
-
YSJ
2 stops20h 20m
Air Canada
Deal found 27/1C$ 1,154
Tue 31/311:30 a.m.
YSJ
-
LHR
1 stop15h 05m
Air Canada
Sun 5/46:00 a.m.
LHR
-
YSJ
2 stops21h 52m
Air Canada
Deal found 26/1C$ 1,156
Wed 11/34:15 p.m.
YSJ
-
GLA
2 stops16h 50m
Multiple Airlines
Wed 18/312:50 p.m.
GLA
-
YSJ
2 stops25h 00m
Multiple Airlines
Deal found 25/1C$ 1,751
Fri 13/34:15 p.m.
YSJ
-
LGW
3 stops14h 55m
Multiple Airlines
Fri 20/38:30 a.m.
LGW
-
YSJ
3 stops29h 19m
Multiple Airlines
Deal found 27/1C$ 1,980

Find flight deals from St John to United Kingdom

Keep the following information in mind while searching for St John to United Kingdom flight deals. Data was last updated 27 January 2026.

Round-trip from

C$ 1,032

One-way from

C$ 797

Popular in

December

Cheapest in

March

Average price

C$ 1,091
Air Canada
  • Air Canada
  • 12/3-19/3
  • 3 total stops
  • 48h 35m total
  • Saint John to United Kingdom
Search Deals
12/3
  • 12/3
  • 3 total stops
  • 25h 25m total
  • Saint John to United Kingdom
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (C$ 98 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 41 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from St John to United Kingdom 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 27 January 2026.
Use the filters below to find and compare flights from Saint John to the United Kingdom that are best for you.

Fly from

St John

Fly to

United Kingdom

Route

Depart

Return

Price

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Thu 12/3

4:15 p.m.-7:10 a.m.

1 stop11h 55m

London Heathrow

Thu 19/3

6:00 a.m.-3:40 p.m.

2 stops36h 40m

C$ 1,032

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Thu 19/3

4:15 p.m.-7:10 a.m.

1 stop11h 55m

London Heathrow

Mon 23/3

1:25 p.m.-3:35 p.m.

1 stop29h 10m

C$ 1,074

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Thu 19/3

4:15 p.m.-10:50 a.m.

2 stops15h 35m

London Heathrow

Mon 23/3

4:20 p.m.-3:35 p.m.

2 stops26h 15m

C$ 1,145

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Fri 13/3

4:15 p.m.-7:10 a.m.

1 stop11h 55m

London Heathrow

Fri 20/3

6:00 p.m.-3:35 p.m.

2 stops24h 35m

C$ 1,145

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Tue 31/3

11:45 a.m.-8:35 a.m.

2 stops16h 50m

London Heathrow

Sun 5/4

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

2 stops21h 52m

C$ 1,160

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Sat 21/3

11:25 a.m.-7:10 a.m.

2 stops16h 45m

London Heathrow

Sat 28/3

6:00 p.m.-11:20 a.m.

2 stops20h 20m

C$ 1,165

Saint JohnGlasgow

YSJ - GLA

YSJGLA

Saint John

Wed 11/3

4:15 p.m.-12:05 p.m.

2 stops16h 50m

Glasgow Intl

Wed 18/3

12:50 p.m.-10:50 a.m.

2 stops25h 00m

C$ 1,751

Saint JohnLondon

YSJ - LGW

YSJLGW

Saint John

Fri 13/3

4:15 p.m.-10:10 a.m.

3 stops14h 55m

London Gatwick

Fri 20/3

8:30 a.m.-10:49 a.m.

3 stops29h 19m

C$ 1,980

Saint JohnLondon

YSJ - LGW

YSJLGW

Saint John

Thu 12/3

4:15 p.m.-8:40 p.m.

3 stops25h 25m

C$ 797

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Thu 12/3

4:15 p.m.-6:55 p.m.

3 stops23h 40m

C$ 915

Flights are sorted by cheapest round-trip flights first.

Deals found on 26/1

Showing 1-10 of 13 results
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Best time to book a flight from St John to United Kingdom

Have a flexible travel schedule? Discover the best time to fly to United Kingdom from St John 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 Saint John to the United Kingdom

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

Currently, March is the cheapest month in which you can book a flight from Saint John to United Kingdom (average of C$ 738). Flying from Saint John to United Kingdom in December is currently the most expensive (average of C$ 1,268). 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.

Reviews of airlines servicing United Kingdom

Get insights into the airlines that provide service to United Kingdom. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to United Kingdom. Reviews last updated 27 January 2026.
Read reviews from past customers who have flown Air Canada from Saint John to the United Kingdom. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air Canada
7.1
Good
10,660 reviews
Check prices

Boarding

7.3

Entertainment

6.8

Comfort

7.1

Overall

7.1

Crew

7.8

Food

6.3

Reviews

1 / 20
4.0
Okay

Sugith,Jan 2026

YSB - YYZ

Left 2 hours late. Stuck on plane for an hour after boarding before take off.
Air Canada
7.1
Good
10,660 reviews
Air Canada
7.1
Good
10,660 reviews
Check prices

Boarding

7.3

Entertainment

6.8

Comfort

7.1

Overall

7.1

Crew

7.8

Food

6.3

Reviews

1 / 20
4.0
Okay

Sugith,Jan 2026

YSB - YYZ

Left 2 hours late. Stuck on plane for an hour after boarding before take off.

Related info for your journey

Find useful and relevant information for your journey from St John to United Kingdom. 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 from for flights from Saint John to United Kingdom?

    Located just 15.1 km from the city centre, Saint John (YSJ) is the airport most travellers will use when flying to United Kingdom from Saint John.

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

    For as low as C$ 1,032, Air Canada can have you in United Kingdom from Saint John in 11h 55m. The distance from Saint John to United Kingdom is about 4712 km.

  • What are the most popular routes from Saint John to United Kingdom?

    The most popular route from Saint John to United Kingdom is Saint John - Glasgow Intl. You may also consider Saint John - London Gatwick or Saint John - London Heathrow.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from St John to United Kingdom 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 Saint John to United Kingdom?

    Currently, March is the cheapest month in which you can book a flight from Saint John to United Kingdom (average of C$ 738). Flying from Saint John to United Kingdom in December is currently the most expensive (average of C$ 1,268). 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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Alternative routes for St John to United Kingdom

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Top airline flying from St John to United Kingdom

Discover the top airline that operate flights from St John to United Kingdom. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 27 January 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 1,157AverageC$ 1,265FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

Fly with Cheapflights

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How does Cheapflights help users find flights from St John to United Kingdom?

When you search for this flight from St John to United Kingdom, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from St John to United Kingdom.

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

Yes, we can. To see specific flights from St John to United Kingdom with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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

Yes, Cheapflights offers price alerts on St John to United Kingdom 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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