Question : Should you take that vacation to Oslo in the next 30 days?
Answer : As of December 5th, the best day for booking to Oslo (OSL) from Chicago (ORD) is December 28th. Bookings have been made roughly 20% below the average price for this route.
Question : How long are most people's visits to Oslo when they fly in from Chicago?
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 : Friday is your lowest-cost day to fly in December. Flexibility is paramount when booking travel plans in order to keep costs down.
Question : Are prices changing frequently for this route?
Answer : Prices for ORD to OSL do fluctuate much more than most. However, the sooner you book, the better price you tend to get.