Question : Would you be willing to change your travel days if it saved you money?
Answer : For the month of December, the cheapest day to fly is Saturday. Flexibility is paramount when booking travel plans in order to keep costs down.
Question : How does Louisville to Sioux Falls stack up against the rest of the world in overall promptness?
Answer : SDF to FSD currently scores 1.6 out of a possible 5 stars in promptness. This score combines both the number of delayed flights and total delayed minutes. With 1.6 stars, you should plan on being extra flexible with your arrival plans.