Go through your results for flights to Gander in Canada with Netflights. The most popular airlines for this route are Lufthansa & Air Canada, with Lufthansa claiming the top spot. Although Brussels Airlines usually has the best prices, it's best to double check what's available for your travel dates.
If these flights are too expensive, try searching for a different time of year. So if your dates are flexible, consider looking at different times of year.
ten direct and indirect flights go to Gander every week and we scan them all. Look out for flights with Brussels Airlines, as they often have good deals. Or broaden your search by looking at other airports in Canada.
Looking at a few different departure airports will give you even more choice. See what you can find. And remember, it's best to book your flights in advance wherever possible.