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Cheap flights from Saint John to London, ON from C$ 1,095

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/10. Fares are subject to change and may not be available on all flights or dates of travel.
YSJ — YXU
11 Oct — 18 Oct1
1 adult
1 adult, Economy

Cheap 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 11 September 2025.

Round-trip from

C$ 1,095
Air Canada
  • Air Canada
  • 10/10-14/10
  • 2 total stops
  • 28h 33m total
  • Saint John to London
Search Deals

Find flight deals from St John to London

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 11 September 2025.

Fri 10/106:40 p.m.YSJ - YXU
1 stop21h 22mAir Canada
Tue 14/103:40 p.m.YXU - YSJ
1 stop7h 11mAir Canada
Deal found 11/9C$ 1,095

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 11 September 2025.
Use the filters below to find and compare flights from Saint John to London that are best for you.

Fly from

St John

Fly to

London

Route

Depart

Return

Price

Saint JohnLondon

YSJ - YXU

YSJYXU

Saint John

Fri 10/10

6:40 p.m.-3:02 p.m.

1 stop21h 22m

London

Tue 14/10

3:40 p.m.-11:51 p.m.

1 stop7h 11m

C$ 1,095

Saint JohnLondon

YSJ - YXU

YSJYXU

Saint John

Thu 19/2

11:55 a.m.-9:21 p.m.

2 stops10h 26m

London

Fri 20/2

5:40 p.m.-11:29 p.m.

1 stop4h 49m

C$ 1,181

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/9

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

What is the cheapest month to book a flight from Saint John to London, Ontario?

Currently, October is the cheapest month in which you can book a flight from Saint John to London, Ontario (average of C$ 243). Flying from Saint John to London, Ontario in December is currently the most expensive (average of C$ 478). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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 21h 22m. 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.

  • What is the cheapest month to book a flight from Saint John to London, Ontario?

    Currently, October is the cheapest month in which you can book a flight from Saint John to London, Ontario (average of C$ 243). Flying from Saint John to London, Ontario in December is currently the most expensive (average of C$ 478). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Grand Bend
Port Stanley

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