Cheap flights from Saint John to London, ON from C$ 1,092
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 25/6. Fares are subject to change and may not be available on all flights or dates of travel.
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 12 June 2025.
Find flight deals from St John to London
Cheapest flights from St John to LondonExplore 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 12 June 2025.
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 12 June 2025.
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 12 June 2025.
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
Saint JohnLondon
YSJ - YXU
YSJYXU
Saint John
Wed 25/6
11:25 a.m.-9:27 p.m.
2 stops11h 02m
London
Thu 24/7
5:45 p.m.-11:50 p.m.
1 stop5h 05m
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.
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.
Rainfall in London by month
Plan your trip to London by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in London, Ontario ranges from 70.0 - 100.0 mm per month. January is typically the wettest month, when rainfall can reach 100.0 mm. March is typically the driest time to visit London, Ontario when rainfall is around 70.0 mm.
Temperature in London by month
Plan your trip to London by taking into account the average temperature totals by month.
If weather is an important factor for your trip to London, Ontario, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 20.0 C. Travellers hoping to avoid the cold should look outside of February, when temperatures are typically at their lowest (around -6.0 C).
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 12 June 2025.
Overall
Entertainment
Food
Boarding
Comfort
Crew
Reviews
rita,May 2025
YWG - YYZ
Overall
Entertainment
Food
Boarding
Comfort
Crew
Reviews
rita,May 2025
YWG - YYZ
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.
Travelling to a place near Saint John?
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Alternative routes for St John to London
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Can Cheapflights find flights from St John to London with no change fees?
Users can book flights with no change fees policies with our dedicated filters. Book flights from St John to London flexibly with Cheapflights today.
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