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Cheap flights from Saint John to the United Kingdom from C$ 674

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 28/10. Fares are subject to change and may not be available on all flights or dates of travel.
YSJ — LHR
14 Oct — 21 Oct1
1 adult
1 adult, Economy

Cheap 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 14 September 2025.

Round-trip from

C$ 961

One-way from

C$ 674

Popular in

December

Cheapest in

March

Average price

C$ 1,264
Air Canada
  • Air Canada
  • 28/10-4/11
  • 3 total stops
  • 34h 39m total
  • Saint John to United Kingdom
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28/10
  • 28/10
  • 2 total stops
  • 18h 45m total
  • Saint John to United Kingdom
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (C$ 185 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 34 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
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Find flight deals from St John to United Kingdom

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 14 September 2025.

Tue 28/1011:55 a.m.YSJ - LHR
1 stop16h 15mAir Canada
Tue 4/119:00 a.m.LHR - YSJ
2 stops18h 24mAir Canada
Deal found 13/9C$ 961
Sat 11/106:40 p.m.YSJ - LHR
2 stops55h 50mAir Canada
Sat 18/1012:05 p.m.LHR - YSJ
2 stops26h 44mAir Canada
Deal found 13/9C$ 1,048
Sat 15/115:40 a.m.YSJ - LHR
1 stop20h 50mMultiple Airlines
Sat 22/1111:10 a.m.LHR - YSJ
2 stops28h 05mMultiple Airlines
Deal found 13/9C$ 1,069
Sat 15/115:40 a.m.YSJ - LHR
1 stop22h 50mAir Canada
Sat 22/111:25 p.m.LHR - YSJ
1 stop25h 50mAir Canada
Deal found 13/9C$ 1,085
Wed 24/96:40 p.m.YSJ - LHR
1 stop13h 10mAir Canada
Wed 1/102:05 p.m.LHR - YSJ
1 stop24h 44mAir Canada
Deal found 11/9C$ 1,254
Wed 24/912:00 p.m.YSJ - LGW
1 stop17h 25mMultiple Airlines
Wed 1/1010:45 a.m.LGW - YSJ
2 stops33h 00mMultiple Airlines
Deal found 11/9C$ 1,267
Sat 11/106:40 p.m.YSJ - LGW
2 stops15h 40mMultiple Airlines
Sat 18/1010:45 a.m.LGW - YSJ
2 stops17h 06mMultiple Airlines
Deal found 13/9C$ 1,279
Tue 2/126:15 p.m.YSJ - GLA
2 stops33h 35mMultiple Airlines
Mon 5/18:10 p.m.GLA - YSJ
2 stops31h 19mMultiple Airlines
Deal found 12/9C$ 1,460
Tue 28/1011:55 a.m.YSJ - LHR
2 stops15h 45mMultiple Airlines
Tue 4/119:10 a.m.LHR - YSJ
3 stops18h 14mMultiple Airlines
Deal found 13/9C$ 1,512

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 14 September 2025.
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

Tue 28/10

11:55 a.m.-7:10 a.m.

1 stop16h 15m

London Heathrow

Tue 4/11

9:00 a.m.-11:24 p.m.

2 stops18h 24m

C$ 961

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Sat 11/10

6:40 p.m.-6:30 a.m.

2 stops55h 50m

London Heathrow

Sat 18/10

8:30 a.m.-11:51 p.m.

1 stop19h 21m

C$ 1,048

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Sat 15/11

5:40 a.m.-6:30 a.m.

1 stop20h 50m

London Heathrow

Sat 22/11

11:10 a.m.-11:15 a.m.

2 stops28h 05m

C$ 1,069

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Wed 24/9

6:40 p.m.-11:50 a.m.

1 stop13h 10m

London Heathrow

Wed 1/10

2:05 p.m.-10:49 a.m.

1 stop24h 44m

C$ 1,254

Saint JohnLondon

YSJ - LGW

YSJLGW

Saint John

Wed 24/9

12:00 p.m.-9:25 a.m.

1 stop17h 25m

London Gatwick

Wed 1/10

10:45 a.m.-3:45 p.m.

2 stops33h 00m

C$ 1,267

Saint JohnLondon

YSJ - LGW

YSJLGW

Saint John

Sat 11/10

6:40 p.m.-2:20 p.m.

2 stops15h 40m

London Gatwick

Sat 18/10

10:45 a.m.-11:51 p.m.

2 stops17h 06m

C$ 1,279

Saint JohnGlasgow

YSJ - GLA

YSJGLA

Saint John

Tue 2/12

6:15 p.m.-7:50 a.m.

2 stops33h 35m

Glasgow Intl

Mon 5/1

8:10 p.m.-11:29 p.m.

2 stops31h 19m

C$ 1,460

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Tue 28/10

11:55 a.m.-6:40 a.m.

2 stops15h 45m

London Heathrow

Tue 4/11

9:10 a.m.-11:24 p.m.

3 stops18h 14m

C$ 1,512

Saint JohnLondon

YSJ - LGW

YSJLGW

Saint John

Fri 20/2

11:55 a.m.-10:35 p.m.

2 stops30h 40m

London Gatwick

Tue 24/2

10:05 a.m.-11:15 a.m.

2 stops53h 10m

C$ 3,029

Saint JohnLondon

YSJ - LGW

YSJLGW

Saint John

Tue 28/10

12:00 p.m.-9:45 a.m.

2 stops18h 45m

C$ 674

Flights are sorted by cheapest round-trip flights first.

Deals found on 13/9

Showing 1-10 of 19 results
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2

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, January is the cheapest month in which you can book a flight from Saint John to United Kingdom (average of C$ 560). Flying from Saint John to United Kingdom in July is currently the most expensive (average of C$ 856). 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 14 September 2025.
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
10,000 reviews
Check prices

Overall

7.1

Food

6.3

Boarding

7.3

Comfort

7.1

Entertainment

6.8

Crew

7.8

Reviews

1 / 20
8.0
Excellent

Graeme,Sep 2025

YWG - YVR

Why not start boarding from the higher seat numbers? Easier movement for everyone. Easier to put baggage in over head lockers. Unable to get a coffee due to air turbulence, but not offered the chance to have a coffee once it had ceased.
Air Canada
7.1
Good
10,000 reviews
Air Canada
7.1
Good
10,000 reviews
Check prices

Overall

7.1

Food

6.3

Boarding

7.3

Comfort

7.1

Entertainment

6.8

Crew

7.8

Reviews

1 / 20
8.0
Excellent

Graeme,Sep 2025

YWG - YVR

Why not start boarding from the higher seat numbers? Easier movement for everyone. Easier to put baggage in over head lockers. Unable to get a coffee due to air turbulence, but not offered the chance to have a coffee once it had ceased.

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$ 961, Air Canada can have you in United Kingdom from Saint John in 16h 15m. 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 - London Heathrow. You may also consider Saint John - London Gatwick or Saint John - Glasgow Intl.

  • 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, January is the cheapest month in which you can book a flight from Saint John to United Kingdom (average of C$ 560). Flying from Saint John to United Kingdom in July is currently the most expensive (average of C$ 856). 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 14 September 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 1,156AverageC$ 1,205FlexibilityNo 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.

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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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