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Cheap flights from London, ON to Saint John from C$ 394

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 21/6. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — YSJ
26 May — 2 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from London to St John

Enter your travel dates to find the best prices.

Cheapest flights from London to St John
Explore the most affordable flight options available from London to St John. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 April 2026.

Sat 6/66:10 p.m.
YXU
-
YSJ
1 stop4h 42m
Air Canada
Sat 13/65:35 a.m.
YSJ
-
YXU
1 stop4h 08m
Air Canada
Deal found 22/4C$ 827
Tue 7/76:20 p.m.
YXU
-
YSJ
1 stop4h 30m
Air Canada
Sat 11/712:50 p.m.
YSJ
-
YXU
1 stop5h 55m
Air Canada
Deal found 23/4C$ 846
Sat 13/66:10 p.m.
YXU
-
YSJ
1 stop4h 42m
Air Canada
Sat 20/65:40 a.m.
YSJ
-
YXU
1 stop4h 37m
Air Canada
Deal found 25/4C$ 895
Fri 22/55:10 a.m.
YXU
-
YSJ
1 stop5h 47m
Air Canada
Mon 25/55:35 a.m.
YSJ
-
YXU
1 stop4h 18m
Air Canada
Deal found 23/4C$ 924

Find flight deals from London to St John

Discover tips and strategies to find the most affordable flight options for your journey from London (YXU) to St John (YSJ). 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 26 April 2026.

Round-trip from

C$ 827

One-way from

C$ 394
Air Canada
  • Air Canada
  • 6/6-13/6
  • 2 total stops
  • 8h 50m total
  • London to Saint John
Search Deals
21/6
  • 21/6
  • 2 total stops
  • 18h 20m total
  • London to Saint John
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from London to St John 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 26 April 2026.
Use the filters below to find and compare flights from London to Saint John that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

LondonSaint John

YXU - YSJ

YXUYSJ

London

Sat 6/6

6:10 p.m.-11:52 p.m.

1 stop4h 42m

Saint John

Sat 13/6

5:35 a.m.-8:43 a.m.

1 stop4h 08m

C$ 827

LondonSaint John

YXU - YSJ

YXUYSJ

London

Sat 13/6

6:10 p.m.-11:52 p.m.

1 stop4h 42m

Saint John

Sat 20/6

5:40 a.m.-9:17 a.m.

1 stop4h 37m

C$ 895

LondonSaint John

YXU - YSJ

YXUYSJ

London

Fri 22/5

5:10 a.m.-11:57 a.m.

1 stop5h 47m

Saint John

Mon 25/5

5:35 a.m.-8:53 a.m.

1 stop4h 18m

C$ 924
Cheapest one-way

LondonSaint John

YXU - YSJ

YXUYSJ

London

Sun 21/6

2:40 p.m.-10:00 a.m.

2 stops18h 20m

C$ 394
Quickest one-way

LondonSaint John

YXU - YSJ

YXUYSJ

London

Sun 21/6

5:10 a.m.-11:55 a.m.

1 stop5h 45m

C$ 414

LondonSaint John

YXU - YSJ

YXUYSJ

London

Sun 10/5

6:10 a.m.-10:00 a.m.

2 stops26h 50m

C$ 644

Flights are sorted by cheapest round-trip flights first.

Deals found on 25/4

Sorted by cheapest first

Best time to book a flight from London to St John

Have a flexible travel schedule? Discover the best time to fly to St John from London 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.

Reviews of airlines servicing St John

Get insights into the airlines that provide service to St John. 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 St John. Reviews last updated 26 April 2026.
Check out reviews from past customers who have flown with Air Canada from London to Saint John 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
10,970 reviews
Check prices

Entertainment

6.8

Food

6.3

Crew

7.8

Overall

7.1

Boarding

7.3

Comfort

7.1

Reviews

1 / 20
6.0
Good

Thomas,Apr 2026

YYZ - LHR

Food is sub par. I travel a lot and AC food is not good
Air Canada
7.1
Good
10,970 reviews
Air Canada
7.1
Good
10,970 reviews
Check prices

Entertainment

6.8

Food

6.3

Crew

7.8

Overall

7.1

Boarding

7.3

Comfort

7.1

Reviews

1 / 20
6.0
Good

Thomas,Apr 2026

YYZ - LHR

Food is sub par. I travel a lot and AC food is not good

Related info for your journey

Find useful and relevant information for your journey from London to St John. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    There are many flights that can get you from London, Ontario to Saint John in 4h 42m. Fly via Air Canada to get the fastest option. Airlines will cover a distance of 1241 km.

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

    Cheapflights users have booked flights from London, Ontario to Saint John round-trip from C$ 792.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from London to St John 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

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from London to St John

Discover the top airline that operate flights from London to St John. 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 26 April 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 792AverageC$ 1,157FlexibilityNo 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 London to St John?

Cheapflights makes it easy to find London to St John flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

Millions of users choose and trust Cheapflights to book the best flight deals from London to St John for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Certainly. Search results for flights to St John from London 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 London to St John become cheaper?

Not ready to book yet? You can track prices for flights from London to St John on Cheapflights with our Price Alert feature and get notified when better prices are available.

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