The air fare is always high during high season (starting early June to Aug)
due to summer vocations when school children are off. Typical price is
always USD1,200 economic.
This year, due to the Expo, you may have to pay full price which is over
USD1,400.
That price I saw was TOTAL at THAT website. Online pricing is changing all the time. you have to search around, search different date, at different time -- searching at 2AM in the morning you can often get better price than than at 2PM in the afternoon.