Question : How long do most people stay in Stockholm?
Answer : Of course you're not most people, but if you were, you'd stay roughly 11 days.
Question : If your plans are flexible, have you considered changing your departure day?
Answer : For the month of November, Tuesday is your cheapest day to fly. Flexibility is paramount when booking travel plans in order to keep travel costs down.
Question : Is there another local airport that can get you to Stockholm?
Answer : Departing from Vnukovo Airport is not the only way to get to Stockholm Arlanda Airport. Try searching for flights from Sheremetyevo International Airport (SVO) as well. Over the upcoming months, flights from SVO to ARN are being booked 21% cheaper than flights from VKO to ARN. Being only 26 miles away, it's easily accessible for most.