Question : Do travelers from Eugene typically stay in Amsterdam for very long?
Answer : Of course you're not most people, but if you were, you'd stay roughly 15 days.
Question : Is price more important than specific travel days for you?
Answer : The lowest-cost day to fly in December is Sunday. Being flexible with your travel days garners you even more savings during your booking.
Question : How often is the price changing when booking a trip from Eugene Airport (EUG) to Amsterdam Airport Schiphol (AMS)?
Answer : Prices for this trip tend to change much more than others. Prices tend to be lower the further out you book.