We've gone through lots of different flights, to help you find the cheapest way to get from London Heathrow to Thunder Bay. You can choose from four airlines. At the moment, 28 / Oct / 2025 is the cheapest date to travel, but scroll through the results to find the option that works best for you.
There are 38 flights from London Heathrow to or via Thunder Bay every week. Out of the four available airlines, the most popular ones are Air Canada, Lufthansa & British Airways. 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.
The distance between London Heathrow to Thunder Bay is 5968 km. Normally, it takes about 13 hrs 20 mins to fly, and you can definitely expect the journey to be at least 12 hrs 50 mins. You can see the various flight times in the results.
Searching by month, for instance, will show you the best time of the week to fly.
