On top of the cost of the flight, there may be additional fees, depending on your destination and the cost of fuel. A fuel surcharge may be added if there’s a rise in the cost of fuel. If you’re flying internationally, there may be fees associated with the trip due to customs charges, handling costs, and other expenses that can be incurred. If your flight travels overnight, you could incur a fee for keeping the crew overnight. Depending on the broker or operator, there may be fees for additional passengers as well.