Question : How long are most people's visits to Busan when they fly in from Santa Ana?
Answer : Of course you're not most people, but if you were, you'd stay roughly 13 days.
Question : If your plans are flexible, have you considered changing your departure day?
Answer : Saturday is your lowest-cost day to fly in February. Being flexible with your travel days garners you even more savings during your booking.
Question : How often are prices changing for this route?
Answer : Prices are fluctuating much more for this route than most routes. Prices tend to be lower the further out you book.