There is an Error Fare currently available from Portland Oregon to Guangzhou in China for around $300 with Alaska and All Nippon Airways. Dates in November and December. This is great value should you be based on the west coast. Flights connect in San Francisco and Tokyo.
Guangzhou is in southern China and is the third largest city in the country. It is a short hop to Hong Kong and there are connections to all over Asia.
These fares will likely expire soon, so if your feeling adventurous grab them now.