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Cheap flights from Saint John to London, ON from C$ 439

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 9/5. Fares are subject to change and may not be available on all flights or dates of travel.
YSJ — YXU
25 May — 1 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 25 April 2026.

Mon 1/612:20 p.m.
YSJ
-
YXU
1 stop6h 13m
Air Canada
Fri 5/65:10 a.m.
YXU
-
YSJ
1 stop5h 17m
Air Canada
Deal found 20/4C$ 940
Sun 23/812:50 p.m.
YSJ
-
YXU
1 stop5h 55m
Air Canada
Sun 30/85:40 a.m.
YXU
-
YSJ
1 stop5h 15m
Air Canada
Deal found 23/4C$ 953
Sat 23/54:30 p.m.
YSJ
-
YXU
2 stops6h 08m
Air Canada
Tue 26/56:10 p.m.
YXU
-
YSJ
1 stop4h 42m
Air Canada
Deal found 24/4C$ 1,065

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 (YXU). 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 25 April 2026.

Round-trip from

C$ 940

One-way from

C$ 439
Air Canada
  • Air Canada
  • 1/6-5/6
  • 2 total stops
  • 8h 50m total
  • Saint John to London
Search Deals
Air Canada
  • Air Canada
  • 9/5
  • 1 total stop
  • 4h 53m 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 25 April 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 - YXU

YSJYXU

Saint John

Mon 1/6

12:20 p.m.-5:33 p.m.

1 stop6h 13m

London

Fri 5/6

5:10 a.m.-11:27 a.m.

1 stop5h 17m

C$ 940

Saint JohnLondon

YSJ - YXU

YSJYXU

Saint John

Sun 23/8

12:50 p.m.-5:45 p.m.

1 stop5h 55m

London

Sun 30/8

5:40 a.m.-11:55 a.m.

1 stop5h 15m

C$ 953
Quickest round-trip

Saint JohnLondon

YSJ - YXU

YSJYXU

Saint John

Sat 23/5

4:30 p.m.-9:38 p.m.

2 stops6h 08m

London

Tue 26/5

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

1 stop4h 42m

C$ 1,065
Cheapest one-way
Quickest one-way

Saint JohnLondon

YSJ - YXU

YSJYXU

Saint John

Sat 9/5

5:00 a.m.-8:53 a.m.

1 stop4h 53m

C$ 439

Flights are sorted by cheapest round-trip flights first.

Deals found on 24/4

Sorted by cheapest first

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.

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.

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

    Air Canada can get you from Saint John to London, Ontario in just under 6h 13m. Your travel time can differ by up to . There are 1241 km between Saint John and London, Ontario.

  • 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
Port Stanley
Grand Bend

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