In general, when looking for the cheapest flight to Stuttgart, try to choose a flight departing in March for the best deal.
Most flyers found that booking flight tickets 52 days in advance of their planned departure date is, on average, the best time to get cheap flights to Stuttgart.
On average, the cheapest flights to Stuttgart are found when departing on a Tuesday. Try to avoid departing on a Monday, as this is usually the most expensive day.
On average you can find the best deals on plane tickets to Stuttgart when looking for flights with evening departure times.