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Cheap flights from Saint John to London from C$ 466

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 15/6. Fares are subject to change and may not be available on all flights or dates of travel.
YSJ — LON
3 Jun — 10 Jun1
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 4 May 2026.

Tue 29/94:30 p.m.
YSJ
-
LHR
1 stop10h 00m
Air Canada
Tue 6/106:00 a.m.
LHR
-
YSJ
2 stops37h 49m
Air Canada
Deal found 30/4C$ 1,046
Fri 2/104:30 p.m.
YSJ
-
LHR
1 stop13h 30m
Air Canada
Tue 6/106:00 a.m.
LHR
-
YSJ
2 stops37h 49m
Air Canada
Deal found 3/5C$ 1,053
Mon 18/54:30 p.m.
YSJ
-
LHR
2 stops24h 55m
United Airlines
Wed 27/512:15 p.m.
LHR
-
YSJ
2 stops31h 25m
United Airlines
Deal found 30/4C$ 1,137
Tue 26/54:30 p.m.
YSJ
-
LHR
2 stops24h 10m
United Airlines
Tue 2/69:30 a.m.
LHR
-
YSJ
2 stops34h 20m
United Airlines
Deal found 29/4C$ 1,139
Fri 14/810:45 a.m.
YSJ
-
LGW
2 stops29h 10m
Multiple Airlines
Sun 16/83:55 p.m.
LGW
-
YSJ
2 stops25h 35m
Multiple Airlines
Deal found 3/5C$ 1,682
Sun 1/116:55 a.m.
YSJ
-
LGW
3 stops22h 55m
Multiple Airlines
Wed 11/116:55 p.m.
LGW
-
YSJ
3 stops32h 59m
Multiple Airlines
Deal found 1/5C$ 2,390

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 4 May 2026.

Round-trip from

C$ 1,046

One-way from

C$ 466
Air Canada
  • Air Canada
  • 29/9-6/10
  • 3 total stops
  • 47h 49m total
  • Saint John to London
Search Deals
15/6
  • 15/6
  • 2 total stops
  • 28h 45m 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 4 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

Tue 29/9

4:30 p.m.-8:35 a.m.

2 stops36h 05m

London Heathrow

Tue 6/10

6:00 a.m.-3:49 p.m.

2 stops37h 49m

C$ 1,049

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Fri 2/10

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

1 stop13h 30m

London Heathrow

Tue 6/10

6:00 a.m.-3:49 p.m.

2 stops37h 49m

C$ 1,053

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Mon 18/5

4:30 p.m.-9:25 p.m.

2 stops24h 55m

London Heathrow

Wed 27/5

12:15 p.m.-3:40 p.m.

2 stops31h 25m

C$ 1,137

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Tue 26/5

4:30 p.m.-8:40 p.m.

2 stops24h 10m

London Heathrow

Tue 2/6

9:30 a.m.-3:50 p.m.

2 stops34h 20m

C$ 1,139
Quickest round-trip

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Fri 29/5

4:30 p.m.-11:55 a.m.

2 stops15h 25m

London Heathrow

Fri 5/6

10:25 a.m.-3:50 p.m.

2 stops33h 25m

C$ 1,141

Saint JohnLondon

YSJ - LGW

YSJLGW

Saint John

Fri 14/8

10:45 a.m.-7:55 p.m.

2 stops29h 10m

London Gatwick

Sun 16/8

3:55 p.m.-1:30 p.m.

2 stops25h 35m

C$ 1,682
Cheapest one-way

Saint JohnLondon

YSJ - LGW

YSJLGW

Saint John

Mon 15/6

10:45 a.m.-7:30 p.m.

2 stops28h 45m

C$ 466

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Mon 15/6

10:45 a.m.-4:00 p.m.

2 stops25h 15m

C$ 568

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Thu 18/6

11:30 a.m.-8:05 a.m.

3 stops40h 35m

C$ 635

Saint JohnLondon

YSJ - LHR

YSJLHR

Saint John

Tue 16/6

11:30 a.m.-1:55 p.m.

2 stops22h 25m

C$ 718

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/5

Showing 1-10 of 12 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 4 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
10,995 reviews
Check prices

Food

6.3

Boarding

7.3

Entertainment

6.8

Comfort

7.1

Overall

7.1

Crew

7.8

Reviews

1 / 20
8.0
Excellent

John,Apr 2026

YVR - YOW

Crew was very attentive and meals were good. My wife required a wheel chair due to an accident on vacation. The service in Toronto was poor and Ottawa no better. Southeast Asia could teach them lots. Flight originated in Manila on ANA which was cancelled due to a mechanical issue. We were put up overnight in the Savoy Hotel with dinner and breakfast. The airline staff and hotel staff were fantastic.
Air Canada
7.1
Good
10,995 reviews
Air Canada
7.1
Good
10,995 reviews
Check prices

Food

6.3

Boarding

7.3

Entertainment

6.8

Comfort

7.1

Overall

7.1

Crew

7.8

Reviews

1 / 20
8.0
Excellent

John,Apr 2026

YVR - YOW

Crew was very attentive and meals were good. My wife required a wheel chair due to an accident on vacation. The service in Toronto was poor and Ottawa no better. Southeast Asia could teach them lots. Flight originated in Manila on ANA which was cancelled due to a mechanical issue. We were put up overnight in the Savoy Hotel with dinner and breakfast. The airline staff and hotel staff were fantastic.

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 36h 05m. 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$ 1,112, 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

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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 4 May 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 1,112AverageC$ 1,377FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

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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.

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