Find flights
When to book
Airlines
FAQs

Cheap flights from Saint John to London from C$ 496

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
12 Jul — 19 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 12 June 2026.

Wed 16/95:40 a.m.
YSJ
-
LHR
2 stops20h 15m
United Airlines
Sun 20/99:30 a.m.
LHR
-
YSJ
2 stops34h 29m
United Airlines
Deal found 11/6C$ 1,157
Thu 11/612:20 p.m.
YSJ
-
LHR
2 stops17h 00m
United Airlines
Mon 15/68:00 a.m.
LHR
-
YSJ
2 stops19h 52m
United Airlines
Deal found 10/6C$ 1,291
Wed 8/710:45 a.m.
YSJ
-
LGW
2 stops23h 15m
Multiple Airlines
Tue 14/710:45 a.m.
LGW
-
YSJ
2 stops27h 15m
Multiple Airlines
Deal found 10/6C$ 1,295
Thu 11/64:30 p.m.
YSJ
-
LHR
2 stops24h 30m
Air Canada
Mon 15/66:00 a.m.
LHR
-
YSJ
2 stops37h 50m
Air Canada
Deal found 9/6C$ 1,313
Wed 16/94:40 p.m.
YSJ
-
LHR
1 stop13h 20m
Air Canada
Sun 20/96:00 a.m.
LHR
-
YSJ
2 stops21h 51m
Air Canada
Deal found 11/6C$ 1,316
Thu 1/105:40 a.m.
YSJ
-
LGW
2 stops22h 45m
Multiple Airlines
Sat 10/109:25 a.m.
LGW
-
YSJ
2 stops42h 26m
Multiple Airlines
Deal found 12/6C$ 1,349
Tue 7/74:40 p.m.
YSJ
-
LHR
1 stop9h 50m
Air Canada
Tue 14/72:10 p.m.
LHR
-
YSJ
2 stops29h 35m
Air Canada
Deal found 9/6C$ 1,469
Wed 8/75:00 a.m.
YSJ
-
LHR
2 stops21h 30m
Air Canada
Tue 14/79:30 a.m.
LHR
-
YSJ
2 stops18h 20m
Air Canada
Deal found 10/6C$ 1,481
Sat 26/96:55 a.m.
YSJ
-
LGW
2 stops22h 30m
Multiple Airlines
Sun 11/1012:40 p.m.
LGW
-
YSJ
1 stop25h 20m
Multiple Airlines
Deal found 12/6C$ 1,742

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 12 June 2026.

Round-trip from

C$ 1,157

One-way from

C$ 496
United Airlines
  • United Airlines
  • 16/9-20/9
  • 4 total stops
  • 54h 44m total
  • Saint John to London
Search Deals
6/7
  • 6/7
  • 3 total stops
  • 41h 35m 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 12 June 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

Wed 16/9

5:40 a.m.-5:55 a.m.

2 stops20h 15m

London Heathrow

Sun 20/9

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

2 stops34h 29m

C$ 1,157

Saint JohnLondon

YSJ - LGW

YSJLGW

Saint John

Wed 8/7

10:45 a.m.-2:00 p.m.

2 stops23h 15m

London Gatwick

Tue 14/7

10:45 a.m.-10:00 a.m.

2 stops27h 15m

C$ 1,295

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Wed 16/9

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

1 stop13h 20m

London Heathrow

Sun 20/9

6:00 a.m.-11:51 p.m.

2 stops21h 51m

C$ 1,316

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Tue 7/7

4:40 p.m.-6:30 a.m.

1 stop9h 50m

London Heathrow

Tue 14/7

2:10 p.m.-3:45 p.m.

2 stops29h 35m

C$ 1,469
Quickest round-trip

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Wed 8/7

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

1 stop13h 20m

London Heathrow

Tue 14/7

9:30 a.m.-11:50 p.m.

2 stops18h 20m

C$ 1,469

Saint JohnLondon

YSJ - LGW

YSJLGW

Saint John

Thu 1/10

12:50 p.m.-10:55 p.m.

3 stops30h 05m

London Gatwick

Sat 10/10

9:45 a.m.-11:51 p.m.

2 stops18h 06m

C$ 1,698

Saint JohnLondon

YSJ - LGW

YSJLGW

Saint John

Sat 26/9

6:55 a.m.-9:25 a.m.

2 stops22h 30m

London Gatwick

Sun 11/10

12:40 p.m.-10:00 a.m.

1 stop25h 20m

C$ 1,742

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Sun 5/7

5:00 a.m.-5:55 a.m.

2 stops20h 55m

London Heathrow

Sun 12/7

9:30 a.m.-3:45 p.m.

2 stops34h 15m

C$ 2,150
Cheapest one-way

Saint JohnLondon

YSJ - LGW

YSJLGW

Saint John

Mon 6/7

10:45 a.m.-8:20 a.m.

3 stops41h 35m

C$ 511

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Mon 6/7

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

3 stops42h 20m

C$ 591

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/6

Showing 1-10 of 11 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 12 June 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
11,168 reviews
Check prices

Boarding

7.3

Comfort

7.1

Crew

7.8

Entertainment

6.8

Food

6.3

Overall

7.1

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jun 2026

YUL - LYS

The flight was cancelled. We were rebooked the next day on Air France but had a 12 hour layover in Paris. We lost 1 1/2 days of our vacation.
Air Canada
7.1
Good
11,168 reviews
Air Canada
7.1
Good
11,168 reviews
Check prices

Boarding

7.3

Comfort

7.1

Crew

7.8

Entertainment

6.8

Food

6.3

Overall

7.1

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jun 2026

YUL - LYS

The flight was cancelled. We were rebooked the next day on Air France but had a 12 hour layover in Paris. We lost 1 1/2 days of our vacation.

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 Air Canada fly from Saint John to London in about 13h 20m. The time it takes to get you to your destination can typically vary by up to 6h 55m. Saint John and London are separated by a distance of 4712 km. This flight may include one or multiple stops.

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

    Currently priced at C$ 1,196, 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
Slough
Marlow
Cobham
Watford
Luton
High Wycombe

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 12 June 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 1,196AverageC$ 1,463FlexibilityNo 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.