Question : How many days should you spend in Prague if you're flying in from Louisville?
Answer : Of course you're not most people, but if you were, you'd stay roughly 17 days.
Question : If your plans are flexible, have you considered changing your departure day?
Answer : The lowest-cost day to fly in February is Thursday. Having flexibility in your travel plans means you can save, so be sure to plan ahead when possible.
Question : Are prices changing frequently for this route?
Answer : Flight prices for SDF to PRG fluctuate much more than the majority of routes. Prices tend to be lower the further out you book.