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Cheap Flights from Saint John to London

Compare Saint John to London flight deals

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Flight deals from Saint John to London

Looking for a cheap last-minute deal or the best return flight from Saint John Airport to London? If you want to travel next month, return fares start from $1,767. Find the lowest prices on one-way and return tickets right here.
London.$1,327 per passenger.Departing Thu, 4 Jun, returning Tue, 9 Jun.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Saint John on Thu, 4 Jun, arriving in London Heathrow.Inbound indirect flight with Air Canada, departs from London Heathrow on Tue, 9 Jun, arriving in Saint John.Price includes taxes and charges.From $1,327, select.
London.$1,532 per passenger.Departing Wed, 27 May, returning Wed, 3 Jun.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Saint John on Wed, 27 May, arriving in London Heathrow.Inbound indirect flight with Air Canada, departs from London Heathrow on Wed, 3 Jun, arriving in Saint John.Price includes taxes and charges.From $1,532, select.
London.$1,570 per passenger.Departing Tue, 9 Jun, returning Tue, 7 Jul.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Saint John on Tue, 9 Jun, arriving in London Heathrow.Inbound indirect flight with Air Canada, departs from London Heathrow on Tue, 7 Jul, arriving in Saint John.Price includes taxes and charges.From $1,570, select.
London.$1,704 per passenger.Departing Mon, 10 Aug, returning Tue, 25 Aug.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Saint John on Mon, 10 Aug, arriving in London Heathrow.Inbound indirect flight with Air Canada, departs from London Heathrow on Tue, 25 Aug, arriving in Saint John.Price includes taxes and charges.From $1,704, select.
London.$1,721 per passenger.Departing Thu, 5 Nov, returning Mon, 9 Nov.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Saint John on Thu, 5 Nov, arriving in London Heathrow.Inbound indirect flight with Air Canada, departs from London Heathrow on Mon, 9 Nov, arriving in Saint John.Price includes taxes and charges.From $1,721, select.
London.$1,767 per passenger.Departing Fri, 1 May, returning Fri, 8 May.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Saint John on Fri, 1 May, arriving in London Heathrow.Inbound indirect flight with Air Canada, departs from London Heathrow on Fri, 8 May, arriving in Saint John.Price includes taxes and charges.From $1,767, select.
London.$1,822 per passenger.Departing Thu, 9 Jul, returning Tue, 21 Jul.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Saint John on Thu, 9 Jul, arriving in London Heathrow.Inbound indirect flight with Air Canada, departs from London Heathrow on Tue, 21 Jul, arriving in Saint John.Price includes taxes and charges.From $1,822, select.

Find the cheapest month to fly from Saint John to London

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Saint John to London flights are currently cheapest in June.
Apr
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May
from $1,767
Jun
from $1,327
Jul
from $1,822
Aug
from $1,704
Sep
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Oct
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Nov
from $1,721
Dec
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Jan
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Feb
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Mar
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Alternative Saint John to London routes

Looking for the cheapest, fastest or easiest route from Saint John to London? You could fly into the following airports instead.

London City

12km from central London
Closest
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London Heathrow

23km from central London
Cheapest
from $1,327
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London Gatwick

40km from central London
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London Luton

45km from central London
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London Stansted

49km from central London
from $2,597
Search flights

London Southend

57km from central London
Search flights

Saint John to London: Flight information

The things to know before you go.
Cheapest flight found$1,327
Cheapest month to flyJune

Finding cheap flights from Saint John to London: Frequently asked questions

There are 6 airports in London: London City, London Heathrow, London Gatwick, London Luton, London Stansted, and London Southend.
The best price we found for a return flight from Saint John to London is $1,327. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Saint John to London. But we found flights with one or more stops from $1,327.
As of April 2026, there are no flights flying from Saint John to London.
The cheapest month to fly from Saint John to London is usually June.
If you're flying from Saint John Airport, the cheapest airport near London is London Heathrow – which is 22.9 km away from the centre of London. We've found flights into this airport from $1,327.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Saint John Airport to London on Thursday, 4 June 2026.
No airlines currently offer direct flights between Saint John Airport and London. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to London but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to London is around 40 days in advance, so don’t leave your flight to the last minute.
In April, the average temperature is usually around 9°C. August is typically the warmest month in London, when it usually averages around 22°C. You can expect the least rain in March. The coldest month is January, with temperatures averaging 1°C. The rainiest month is October.
Currently, Air Canada offers the cheapest flight tickets to London.

Travelling from Saint John Airport (YSJ) to London: what you need to know

  • The timezone in London is UTC+0. The city is three hours ahead of Saint John, where Saint John Airport is located.

  • For a relaxed start to your YSJ to London flight, allow plenty of time to check in and drop off your luggage. Turning up two hours before international departures and an hour before domestic flights is the standard rule.

  • Flying during a peak time such as August? Public holidays and other popular periods can lead to longer queues and delays at check-in and security. Play it safe and arrive up to four hours ahead of an international flight and two hours before domestic departures.

  • Located around 14 kilometres from the centre of Saint John, YSJ can be reached in about 20 minutes by car, depending on traffic. Travelling on public transport will take roughly 55 minutes.

  • Catching an early flight from Saint John Airport to London? Avoid the stress of rushing to the airport (and sneak in some extra precious sleep) by choosing one of these hotels near YSJ:

  • When it comes to Saint John Airport's on-time performance, data shows 77.05% of flights complete their journey on time.

How to find the cheapest flights from Saint John Airport (YSJ) to London

  • The best price we've seen for a one-way Saint John Airport to London flight is $1,500. The cheapest price for a return flight is $1,327. Bear in mind fares may change due to demand at the time of booking.

  • To find cheap flights from YSJ to London, book in advance. Airlines typically offer lower fares when flights first go on sale.

  • Scoring cheap tickets from Saint John Airport to London is easier if you're flexible with your travel dates. Try using the 'Whole month' search function to access the lowest fares across each month and score a sweet deal.

  • Spend less time searching for cheap flights from YSJ to London by creating a Price Alert. You'll receive an email or notification on the app when a special offer becomes available.

  • Save money on your flight from Saint John Airport to London with the help of our filters. Choose your preferred departure time, duration and airlines, then sort the results by 'Cheapest' to see the best deals.

Airports in London

London Heathrow Airport (LHR)

  • London Heathrow Airport (LHR) to the centre of London takes about 55 minutes to reach by car. The centre is roughly 31 kilometres away.

  • Getting to the centre on public transport will take you around 1 hour.

  • If you're arriving on a late flight from Saint John Airport to London, few things beat the convenience of staying close to the terminal. Grab your bags from the carousel and then be showered and snoozing not long after at one of these hotels near LHR:

  • Travel at your own pace with a London Heathrow Airport rental car. Pick up your wheels from Surprice, U-Save or Green Motion and venture far and wide through London and beyond.

  • Reserving your ride from London Heathrow Airport about one week in advance of your flight from YSJ to London can help you lock in the lowest rate.

London Gatwick Airport (LGW)

  • The centre of London is about 80 kilometres from London Gatwick Airport (LGW). Once your flight from Saint John Airport to London has landed and you've made your way through the terminal, the drive should be around 1 hour 20 minutes.

  • Public transport will get you there in around 30 minutes.

  • Following your YSJ to London flight, settle in at a hotel close to LGW. These are some comfortable accommodation options that'll help you sink into relaxation mode:

  • Green Motion, U-Save and Drivalia make collecting a London Gatwick Airport rental car simple. These providers are located in or around the terminal and will get you on your way in no time.

  • Don't pay more than you need to. Reserving your ride three weeks before your arrival at LGW will save you money.

Stansted Airport (STN)

  • Set your sights on the city centre after your flight from Saint John Airport to London has arrived. Central London is around 64 kilometres from Stansted Airport (STN) and takes roughly 1 hour to get to by car.

  • If you use public transport, the journey will take you about 1 hour 25 minutes.

  • If you don't want to make the journey into the centre, choose a hotel close to STN. Settle in at one of these options after your YSJ to London flight:

  • Be in the driver's seat of the next part of your trip with a Stansted Airport rental car. Green Motion, Drivalia and Europcar make getting on the road effortless.

  • Around four weeks before your flight from Saint John Airport to London is the ideal time to book your vehicle from STN. You're likely to snag a better deal or catch some early booking discounts.

Best time to go to London

  • Carefully consider your dates before locking in your flight from Saint John Airport to London. The city comes alive in peak season, but hotel rates are often higher and major attractions can be crowded. Plan your trip to London in low season if you want a more relaxed vibe.

  • The warmest month in London is July, with temperatures ranging between 11ºC and 26ºC. Book your Saint John Airport to London flight ticket then if you enjoy this type of weather.

  • Look for cheap tickets from YSJ to London in January if you'd rather travel when it's cooler. Temperatures are at their lowest then, ranging between 0ºC and 9ºC on average.

More about London

Explore more of United Kingdom

  • You've done London, now it's time to explore other parts of United Kingdom. Journey around 161 kilometres north-west to Birmingham to tick off its popular sights. From Cadbury World to The Library of Birmingham and National Sea Life Centre, you'll have a full itinerary ahead.

  • Around 177 kilometres west of London, Bristol is another essential stop in United Kingdom. Experience major highlights starting with Clifton Suspension Bridge, Cabot Tower and Brandon Hill Nature Park.

Plan the rest of your trip from Saint John to London

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.