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Cheap flights from Saint John to London from C$ 492

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 6/7. Fares are subject to change and may not be available on all flights or dates of travel.
YSJ — LON
24 Jun — 1 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from St John to London

Enter your travel dates to find the best prices.

Cheapest flights from St John to London
Explore the most affordable flight options available from St John to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 25 May 2026.

Sun 7/612:20 p.m.
YSJ
-
LHR
1 stop17h 15m
Air Canada
Thu 11/66:00 a.m.
LHR
-
YSJ
2 stops33h 27m
Air Canada
Deal found 21/5C$ 1,067
Thu 15/104:30 p.m.
YSJ
-
LHR
1 stop13h 30m
Air Canada
Mon 19/102:05 p.m.
LHR
-
YSJ
1 stop29h 44m
Air Canada
Deal found 23/5C$ 1,074
Sun 7/65:35 a.m.
YSJ
-
LHR
2 stops21h 10m
United Airlines
Sat 13/66:00 p.m.
LHR
-
YSJ
2 stops49h 50m
United Airlines
Deal found 20/5C$ 1,156
Tue 1/94:30 p.m.
YSJ
-
LHR
2 stops13h 55m
United Airlines
Tue 15/911:05 a.m.
LHR
-
YSJ
2 stops16h 46m
United Airlines
Deal found 21/5C$ 1,231
Fri 4/910:45 a.m.
YSJ
-
LGW
2 stops21h 10m
Multiple Airlines
Tue 15/910:45 a.m.
LGW
-
YSJ
1 stop30h 45m
Multiple Airlines
Deal found 21/5C$ 1,234
Wed 2/911:30 a.m.
YSJ
-
LGW
1 stop17h 55m
Multiple Airlines
Tue 15/98:45 p.m.
LGW
-
YSJ
2 stops44h 45m
Multiple Airlines
Deal found 21/5C$ 1,250
Mon 31/810:45 a.m.
YSJ
-
LGW
2 stops18h 40m
Multiple Airlines
Tue 15/910:45 a.m.
LGW
-
YSJ
1 stop30h 45m
Multiple Airlines
Deal found 21/5C$ 1,329
Thu 3/911:30 a.m.
YSJ
-
LGW
2 stops17h 55m
Multiple Airlines
Tue 15/910:45 a.m.
LGW
-
YSJ
1 stop30h 45m
Multiple Airlines
Deal found 21/5C$ 1,510
Tue 1/911:30 a.m.
YSJ
-
LGW
2 stops17h 55m
Multiple Airlines
Tue 15/910:45 a.m.
LGW
-
YSJ
1 stop30h 45m
Multiple Airlines
Deal found 21/5C$ 1,513

Find flight deals from St John to London

Discover tips and strategies to find the most affordable flight options for your journey from St John (YSJ) to London (LON). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 25 May 2026.

Round-trip from

C$ 1,067

One-way from

C$ 492
Air Canada
  • Air Canada
  • 7/6-11/6
  • 3 total stops
  • 50h 42m total
  • Saint John to London
Search Deals
6/7
  • 6/7
  • 3 total stops
  • 42h 20m total
  • Saint John to London
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from St John to London 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 25 May 2026.
Use the filters below to find and compare flights from Saint John to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Sun 7/6

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

1 stop17h 15m

London Heathrow

Thu 11/6

6:00 a.m.-11:27 a.m.

2 stops33h 27m

C$ 1,067
Quickest round-trip

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Thu 15/10

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

1 stop13h 30m

London Heathrow

Mon 19/10

12:40 p.m.-3:49 p.m.

2 stops31h 09m

C$ 1,074

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Sun 7/6

5:35 a.m.-6:45 a.m.

2 stops21h 10m

London Heathrow

Sat 13/6

6:00 p.m.-3:50 p.m.

2 stops49h 50m

C$ 1,156

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Mon 8/6

5:35 a.m.-5:55 a.m.

2 stops20h 20m

London Heathrow

Sat 13/6

6:00 p.m.-3:50 p.m.

2 stops25h 50m

C$ 1,156

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Wed 2/9

4:30 p.m.-9:20 p.m.

2 stops24h 50m

London Heathrow

Tue 15/9

10:25 a.m.-11:56 a.m.

2 stops29h 31m

C$ 1,231

Saint JohnLondon

YSJ - LGW

YSJLGW

Saint John

Wed 2/9

11:30 a.m.-9:25 a.m.

1 stop17h 55m

London Gatwick

Tue 15/9

8:45 p.m.-1:30 p.m.

2 stops44h 45m

C$ 1,250

Saint JohnLondon

YSJ - LGW

YSJLGW

Saint John

Mon 31/8

10:45 a.m.-9:25 a.m.

2 stops18h 40m

London Gatwick

Tue 15/9

10:45 a.m.-1:30 p.m.

1 stop30h 45m

C$ 1,329

Saint JohnLondon

YSJ - LGW

YSJLGW

Saint John

Fri 4/9

10:45 a.m.-10:45 a.m.

1 stop20h 00m

London Gatwick

Tue 15/9

10:45 a.m.-1:30 p.m.

1 stop30h 45m

C$ 1,451
Cheapest one-way

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Mon 6/7

10:45 a.m.-9:05 a.m.

3 stops42h 20m

C$ 492

Saint JohnLondon

YSJ - LGW

YSJLGW

Saint John

Sun 5/7

4:40 p.m.-4:05 p.m.

3 stops19h 25m

C$ 767

Flights are sorted by cheapest round-trip flights first.

Deals found on 21/5

Showing 1-10 of 15 resultsSorted by cheapest first
1
2

Best time to book a flight from St John to London

Have a flexible travel schedule? Discover the best time to fly to London 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 London
No data available for this route at this time. Please check back soon.

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. 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 London. Reviews last updated 25 May 2026.
Check out reviews from past customers who have flown with Air Canada from Saint John to London to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air Canada
7.1
Good
11,083 reviews
Check prices

Crew

7.8

Overall

7.1

Comfort

7.1

Food

6.3

Boarding

7.3

Entertainment

6.8

Reviews

1 / 20
2.0
Mediocre

Lori,May 2026

YYZ - YFC

Didn't land, sent back to Toronto. No food, no accommodation, no help at all!!
Air Canada
7.1
Good
11,083 reviews
Air Canada
7.1
Good
11,083 reviews
Check prices

Crew

7.8

Overall

7.1

Comfort

7.1

Food

6.3

Boarding

7.3

Entertainment

6.8

Reviews

1 / 20
2.0
Mediocre

Lori,May 2026

YYZ - YFC

Didn't land, sent back to Toronto. No food, no accommodation, no help at all!!

Related info for your journey

Find useful and relevant information for your journey from St John to London. 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 London?

    Located just 15.1 km from the city centre, Saint John is the airport most travellers will use when flying to London from Saint John. Booking flights from Saint John (YSJ) to London should be relatively easy as there are 0 daily outbound flights to London from 1 airline.

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

    Airlines like Air Canada fly from Saint John to London in about 17h 15m. The time it takes to get you to your destination can typically vary by up to . Saint John and London are separated by a distance of 4712 km.

  • What is the cheapest airline to fly from Saint John to London round-trip?

    Currently priced at C$ 1,183, Air Canada will fly you from Saint John to London and back. In addition to Air Canada, many other airlines offer competitively priced options for your trip.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from St John to London 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

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Gatwick
Romford
Twickenham
Ilford
Bromley
Sutton
Hounslow
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Watford
Luton
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Top airline flying from St John to London

Discover the top airline that operate flights from St John to London. 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 25 May 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 1,183AverageC$ 1,400FlexibilityNo 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 London?

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

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

Certainly. Search results for flights to London from St John shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Of course! You can now track prices for flights from St John to London and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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