Search for cheap flights and last-minute deals with Netflights. We've scanned all the flights from London Heathrow to Saint John, across the two airlines that offer this route. We've found that 11 / Sep / 2025 is the cheapest date to travel at the moment, but it's best to go through the results to see which flight suits you.
There are 30 flights from London Heathrow to or via Saint John every week. Out of the two available airlines, the most popular ones are Air Canada & Lufthansa. But that doesn’t necessarily mean they’ll be the best option for your travel dates. To see as many flights as possible, try widening your search to include other departure airports.
Generally speaking, the flight from London Heathrow to Saint John takes around 12 hrs. The fastest flight takes 12 hrs to cover the 4719 km distance. You can view all flight times yourself in the results list.
You can also search by month, which will reveal the cheapest time of the week to fly.
