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Cheap flights from Saint John to London from C$ 700

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 10/9. Fares are subject to change and may not be available on all flights or dates of travel.
YSJ — LON
30 Aug — 6 Sep1
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 31 July 2026.

Tue 29/94:40 p.m.
YSJ
-
LHR
2 stops13h 45m
United Airlines
Tue 6/1012:00 p.m.
LHR
-
YSJ
2 stops27h 56m
United Airlines
Deal found 29/7C$ 1,152
Fri 2/1012:50 p.m.
YSJ
-
LHR
2 stops16h 10m
United Airlines
Sat 10/1012:00 p.m.
LHR
-
YSJ
2 stops31h 59m
United Airlines
Deal found 30/7C$ 1,155
Thu 10/912:50 p.m.
YSJ
-
LHR
2 stops17h 50m
Lufthansa
Thu 17/911:05 a.m.
LHR
-
YSJ
2 stops16h 46m
Lufthansa
Deal found 27/7C$ 1,176
Fri 2/1010:45 a.m.
YSJ
-
LHR
1 stop18h 50m
Multiple Airlines
Sat 10/106:50 a.m.
LHR
-
YSJ
2 stops21h 01m
Multiple Airlines
Deal found 30/7C$ 1,181
Thu 10/912:50 p.m.
YSJ
-
LHR
2 stops19h 05m
Multiple Airlines
Thu 17/98:30 a.m.
LHR
-
YSJ
1 stop19h 21m
Multiple Airlines
Deal found 27/7C$ 1,273
Tue 29/94:40 p.m.
YSJ
-
LHR
2 stops15h 15m
Multiple Airlines
Tue 6/109:30 a.m.
LHR
-
YSJ
1 stop10h 29m
Multiple Airlines
Deal found 29/7C$ 1,289
Fri 2/104:40 p.m.
YSJ
-
LHR
1 stop13h 20m
Air Canada
Sat 10/106:00 a.m.
LHR
-
YSJ
2 stops37h 59m
Air Canada
Deal found 30/7C$ 1,308
Thu 10/95:00 a.m.
YSJ
-
LGW
2 stops24h 50m
Multiple Airlines
Thu 17/98:40 a.m.
LGW
-
YSJ
2 stops19h 11m
Multiple Airlines
Deal found 27/7C$ 1,320
Thu 10/95:00 a.m.
YSJ
-
LHR
1 stop21h 35m
Air Canada
Thu 17/92:10 p.m.
LHR
-
YSJ
1 stop13h 41m
Air Canada
Deal found 27/7C$ 1,341
Tue 4/84:40 p.m.
YSJ
-
LHR
2 stops24h 20m
Air Canada
Wed 19/82:10 p.m.
LHR
-
YSJ
2 stops29h 50m
Air Canada
Deal found 30/7C$ 1,452
Wed 5/86:55 a.m.
YSJ
-
LGW
1 stop22h 55m
Multiple Airlines
Thu 20/811:35 a.m.
LGW
-
YSJ
1 stop15h 40m
Multiple Airlines
Deal found 30/7C$ 1,477
Tue 29/912:50 p.m.
YSJ
-
LGW
2 stops17h 00m
Multiple Airlines
Tue 6/1012:40 p.m.
LGW
-
YSJ
1 stop15h 11m
Multiple Airlines
Deal found 29/7C$ 1,545

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 31 July 2026.

Round-trip from

C$ 1,152

One-way from

C$ 700
United Airlines
  • United Airlines
  • 29/9-6/10
  • 4 total stops
  • 41h 41m total
  • Saint John to London
Search Deals
10/9
  • 10/9
  • 2 total stops
  • 24h 50m 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 31 July 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

Tue 29/9

4:40 p.m.-10:25 a.m.

2 stops13h 45m

London Heathrow

Tue 6/10

12:00 p.m.-11:56 a.m.

2 stops27h 56m

C$ 1,152

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Fri 2/10

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

2 stops16h 10m

London Heathrow

Sat 10/10

12:00 p.m.-3:59 p.m.

2 stops31h 59m

C$ 1,155

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Thu 10/9

12:50 p.m.-10:40 a.m.

2 stops17h 50m

London Heathrow

Thu 17/9

11:05 a.m.-11:51 p.m.

2 stops16h 46m

C$ 1,176

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Fri 2/10

10:45 a.m.-6:30 a.m.

2 stops15h 45m

London Heathrow

Sat 10/10

5:40 p.m.-3:59 p.m.

3 stops26h 19m

C$ 1,216

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Thu 10/9

12:50 p.m.-11:55 a.m.

2 stops19h 05m

London Heathrow

Thu 17/9

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

1 stop19h 21m

C$ 1,273

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Tue 29/9

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

2 stops15h 15m

London Heathrow

Tue 6/10

9:30 a.m.-3:59 p.m.

1 stop10h 29m

C$ 1,289

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Fri 2/10

4:40 p.m.-10:00 a.m.

1 stop13h 20m

London Heathrow

Sat 10/10

6:00 a.m.-3:59 p.m.

2 stops37h 59m

C$ 1,308

Saint JohnLondon

YSJ - LGW

YSJLGW

Saint John

Thu 10/9

5:00 a.m.-9:50 a.m.

2 stops24h 50m

London Gatwick

Thu 17/9

8:40 a.m.-11:51 p.m.

2 stops19h 11m

C$ 1,320

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Thu 10/9

5:00 a.m.-6:35 a.m.

1 stop21h 35m

London Heathrow

Thu 17/9

2:10 p.m.-11:51 p.m.

1 stop13h 41m

C$ 1,341

Saint JohnLondon

YSJ - LGW

YSJLGW

Saint John

Tue 29/9

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

2 stops17h 00m

London Gatwick

Tue 6/10

12:40 p.m.-11:51 p.m.

1 stop15h 11m

C$ 1,545

Flights are sorted by cheapest round-trip flights first.

Deals found on 27/7

Showing 1-10 of 22 resultsSorted by cheapest first
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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 31 July 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
11,413 reviews
Check prices

Food

6.3

Overall

7.1

Boarding

7.3

Entertainment

6.8

Crew

7.8

Comfort

7.1

Reviews

1 / 20
8.0
Excellent

Tanis,Jul 2026

YVR - YXC

I needed assistance due to a knee injury and the staff at Air Canada from the checkin right to boarding the plane was incredible! Then on the plane although it was almost full they made it so I DID NOT have anyone seated next to me so I could put my legs up onto the edge of the seat which made things so much easier to travel the hour & a half flight! Very impressed!
Air Canada
7.1
Good
11,413 reviews
Air Canada
7.1
Good
11,413 reviews
Check prices

Food

6.3

Overall

7.1

Boarding

7.3

Entertainment

6.8

Crew

7.8

Comfort

7.1

Reviews

1 / 20
8.0
Excellent

Tanis,Jul 2026

YVR - YXC

I needed assistance due to a knee injury and the staff at Air Canada from the checkin right to boarding the plane was incredible! Then on the plane although it was almost full they made it so I DID NOT have anyone seated next to me so I could put my legs up onto the edge of the seat which made things so much easier to travel the hour & a half flight! Very impressed!

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 United Airlines and Lufthansa fly from Saint John to London in about 13h 45m. The time it takes to get you to your destination can typically vary by up to 4h 05m. Saint John and London are separated by a distance of 4712 km. This flight may include one or multiple stops.

  • 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?

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Watford
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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 31 July 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 1,289AverageC$ 1,470FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

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

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to London from St John today with Cheapflights!

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

Cheapflights simply makes it quick and affordable to book flights from St John to London by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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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