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Cheap flights from London, ON to Saint John from C$ 355

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 18/8. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — YSJ
22 Aug — 29 Aug1
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 23 July 2026.

Sat 12/96:20 p.m.
YXU
-
YSJ
1 stop4h 31m
Air Canada
Sat 19/912:55 p.m.
YSJ
-
YXU
1 stop5h 48m
Air Canada
Deal found 22/7C$ 1,012
Thu 24/96:20 p.m.
YXU
-
YSJ
1 stop4h 31m
Air Canada
Mon 28/912:50 p.m.
YSJ
-
YXU
1 stop5h 53m
Air Canada
Deal found 20/7C$ 1,139

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 23 July 2026.

Round-trip from

C$ 1,012

One-way from

C$ 355
Air Canada
  • Air Canada
  • 12/9-19/9
  • 2 total stops
  • 10h 19m total
  • London to Saint John
Search Deals
18/8
  • 18/8
  • 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 23 July 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

Thu 24/9

6:20 p.m.-11:51 p.m.

1 stop4h 31m

Saint John

Mon 28/9

12:50 p.m.-5:43 p.m.

1 stop5h 53m

C$ 1,139

LondonSaint John

YXU - YSJ

YXUYSJ

London

Fri 21/8

5:40 a.m.-11:50 a.m.

1 stop5h 10m

Saint John

Fri 28/8

5:00 a.m.-9:20 a.m.

1 stop5h 20m

C$ 1,213

LondonSaint John

YXU - YSJ

YXUYSJ

London

Sat 12/9

6:10 a.m.-11:15 p.m.

3 stops40h 05m

Saint John

Sat 19/9

6:55 a.m.-5:20 a.m.

3 stops23h 25m

C$ 1,429
Cheapest one-way

LondonSaint John

YXU - YSJ

YXUYSJ

London

Tue 18/8

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

3 stops18h 20m

C$ 420

LondonSaint John

YXU - YSJ

YXUYSJ

London

Tue 18/8

6:20 p.m.-1:25 a.m.

1 stop6h 05m

C$ 466
Quickest one-way

LondonSaint John

YXU - YSJ

YXUYSJ

London

Mon 31/8

5:40 a.m.-11:50 a.m.

1 stop5h 10m

C$ 688

Flights are sorted by cheapest round-trip flights first.

Deals found on 19/7

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.

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 31m. Fly via Air Canada to get the fastest option. Airlines will cover a distance of 1241 km.

  • 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

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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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