Question : How many days should you spend in Changsha?
Answer : Passengers from PDX to CSX stay 27 days on average.
Question : Which airline is offering the cheapest flight from PDX to CSX?
Answer : Delta Air Lines is your best bet for finding that coveted low fare. They're offering fares as low as $614, while prices for other flights are as high as $1,917.
Question : Is the price you found a good deal?
Answer : Prices for this trip tend to change a lot more than other flights from the United States. They can vary anywhere from $614 to $1,917. Prices tend to be lower the further out you book.
Question : Will you do what it takes to get the absolute cheapest flight?
Answer : The best day to fly on a budget this month is Friday. Being flexible with your travel days garners even more savings during booking.