Go through your results for flights to Flint in the USA with Netflights. The most popular airlines for this route are American Airlines, British Airways & United Airlines, with American Airlines claiming the top spot. Although American Airlines usually has the best prices, it's best to double check what's available for your travel dates.
Flexible on dates? Conducting your search by month allows you to compare prices to Flint throughout the year. Accommodation prices will also be higher at this time of year.
Flint receives 47 direct and indirect flights every week, but the cheapest airline is normally American Airlines. So, if the flights to Flint don't work for you, you could always try searching for flights to other airports in the USA.
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.