Question : How many days should you spend in Moscow if you're flying in from Osaka?
Answer : Of course you're not most people, but if you were, you'd stay roughly seven days.
Question : Is price more important than specific travel days for you?
Answer : For the month of February, the cheapest day to fly is Monday. 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 for this trip tend to change much more than others. However, the sooner you book, the better price you tend to get.