Question : Looking for the cheapest flight over the next 30 days?
Answer : As of November 28th, the best day for deals to Shanghai (PVG) from Portland (PDX) is December 8th. Bookings have been made roughly 43% below the average price for this route.
Question : How many days should you spend in Shanghai if you're flying in from Portland?
Answer : Of course you're not most people, but if you were, you'd stay roughly 18 days.
Question : If your plans are flexible, have you considered changing your departure day?
Answer : In December, Saturday is your cheapest day to fly. 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 a lot more for this route than the majority of routes. Remember, you can save by booking further in advance.