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Cheap flights from Saint John to the United Kingdom from C$ 690

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 13/12. Fares are subject to change and may not be available on all flights or dates of travel.
YSJ — LHR
28 Nov — 5 Dec1
1 adult
1 adult, Economy, 0 bags

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 29 October 2025.

Round-trip from

C$ 1,003

One-way from

C$ 690

Popular in

December

Cheapest in

March

Average price

C$ 1,196
Air Canada
  • Air Canada
  • 26/11-3/12
  • 3 total stops
  • 23h 38m total
  • Saint John to United Kingdom
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13/12
  • 13/12
  • 3 total stops
  • 24h 25m total
  • Saint John to United Kingdom
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (C$ 230 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 31 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
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Find 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 29 October 2025.

Wed 26/114:15 p.m.YSJ - LHR
1 stop10h 55mAir Canada
Wed 3/126:50 a.m.LHR - YSJ
2 stops12h 43mAir Canada
Deal found 26/10C$ 1,003
Mon 3/114:15 p.m.YSJ - LHR
2 stops34h 25mUnited Airlines
Mon 10/1112:05 p.m.LHR - YSJ
2 stops31h 28mUnited Airlines
Deal found 27/10C$ 1,358
Thu 13/114:15 p.m.YSJ - LHR
2 stops37h 05mAir Canada
Tue 18/111:45 p.m.LHR - YSJ
2 stops53h 48mAir Canada
Deal found 27/10C$ 1,417
Mon 3/114:15 p.m.YSJ - LHR
2 stops35h 40mMultiple Airlines
Mon 10/111:25 p.m.LHR - YSJ
1 stop30h 08mMultiple Airlines
Deal found 27/10C$ 1,455
Fri 7/114:15 p.m.YSJ - LHR
1 stop10h 55mAir Canada
Sun 16/111:25 p.m.LHR - YSJ
2 stops25h 34mAir Canada
Deal found 26/10C$ 1,974
Mon 3/114:15 p.m.YSJ - LHR
1 stop10h 55mAir Canada
Mon 10/116:00 p.m.LHR - YSJ
1 stop20h 59mAir Canada
Deal found 27/10C$ 2,029
Fri 7/114:15 p.m.YSJ - LHR
2 stops34h 05mMultiple Airlines
Sun 16/1111:05 a.m.LHR - YSJ
2 stops32h 28mMultiple Airlines
Deal found 26/10C$ 2,048
Thu 13/1111:45 a.m.YSJ - LGW
1 stop18h 00mMultiple Airlines
Tue 18/1111:40 a.m.LGW - YSJ
1 stop15h 49mMultiple Airlines
Deal found 27/10C$ 2,426
Mon 3/1112:00 p.m.YSJ - LGW
2 stops17h 45mMultiple Airlines
Mon 10/117:00 a.m.LGW - YSJ
3 stops36h 45mMultiple Airlines
Deal found 27/10C$ 2,483
Wed 26/114:15 p.m.YSJ - LGW
2 stops26h 20mMultiple Airlines
Wed 3/125:05 p.m.LGW - YSJ
2 stops34h 24mMultiple Airlines
Deal found 26/10C$ 3,661

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 29 October 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

Wed 26/11

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

1 stop10h 55m

London Heathrow

Wed 3/12

6:50 a.m.-3:33 p.m.

2 stops12h 43m

C$ 1,003

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Fri 20/2

4:15 p.m.-9:20 a.m.

2 stops13h 05m

London Heathrow

Tue 24/2

6:50 a.m.-3:35 p.m.

2 stops12h 45m

C$ 1,010

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Wed 11/3

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

1 stop11h 55m

London Heathrow

Mon 23/3

1:25 p.m.-10:49 a.m.

2 stops24h 24m

C$ 1,035

Saint JohnGlasgow

YSJ - GLA

YSJGLA

Saint John

Mon 20/4

11:55 a.m.-4:40 p.m.

2 stops24h 45m

Glasgow Intl

Fri 1/5

5:30 p.m.-10:49 a.m.

2 stops45h 19m

C$ 1,438

Saint JohnLondon

YSJ - LGW

YSJLGW

Saint John

Thu 13/11

11:45 a.m.-9:45 a.m.

1 stop18h 00m

London Gatwick

Tue 18/11

11:40 a.m.-11:29 p.m.

1 stop15h 49m

C$ 2,426

Saint JohnLondon

YSJ - LGW

YSJLGW

Saint John

Wed 26/11

4:15 p.m.-10:35 p.m.

2 stops26h 20m

London Gatwick

Wed 3/12

5:05 p.m.-11:29 p.m.

2 stops34h 24m

C$ 3,661

Saint JohnLondon

YSJ - LGW

YSJLGW

Saint John

Sat 13/12

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

3 stops24h 25m

C$ 690

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Sat 13/12

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

3 stops28h 50m

C$ 848

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Sat 13/12

5:40 a.m.-12:50 p.m.

2 stops27h 10m

C$ 876

Saint JohnLondon

YSJ - LGW

YSJLGW

Saint John

Fri 7/11

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

2 stops41h 45m

C$ 1,306

Flights are sorted by cheapest round-trip flights first.

Deals found on 29/10

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$ 766). Flying from Saint John to United Kingdom in December is currently the most expensive (average of C$ 1,294). 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 29 October 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
10,372 reviews
Check prices

Overall

7.1

Comfort

7.1

Entertainment

6.8

Food

6.3

Boarding

7.3

Crew

7.8

Reviews

1 / 20
2.0
Mediocre

robert,Sep 2025

YEG - YVR

There was nothing that I liked about air canada. My experience was terrible.
Air Canada
7.1
Good
10,372 reviews
Air Canada
7.1
Good
10,372 reviews
Check prices

Overall

7.1

Comfort

7.1

Entertainment

6.8

Food

6.3

Boarding

7.3

Crew

7.8

Reviews

1 / 20
2.0
Mediocre

robert,Sep 2025

YEG - YVR

There was nothing that I liked about air canada. My experience was terrible.

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$ 1,003, Air Canada can have you in United Kingdom from Saint John in 10h 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 - 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, March is the cheapest month in which you can book a flight from Saint John to United Kingdom (average of C$ 766). Flying from Saint John to United Kingdom in December is currently the most expensive (average of C$ 1,294). 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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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 29 October 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 1,166AverageC$ 1,283FlexibilityNo 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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