In general when looking for the cheapest flight to Asia, try to book your flight during the month of September for the best deal.
From most locations, booking your flights to Asia around 60 days prior to your departure date finds the best deals.
On average, the cheapest flights to Asia are found when departing on a Wednesday. Try to avoid departing on a Tuesday, as this is usually the most expensive day.
Typically, cheap prices to Asia are most often found for midday flights. Cheap prices are less likely for afternoon flights.