Asiana Airlines have round trip airfares travelling from Seattle (SEA) to Hong Kong (HKG) for $509, making 1 stop in South Korea.
Departs SEA: Feb 18-19, 26; March 4-6, 11-13, 18-20, 25-27; April 1-3, 9, 15-17, 22-23, 28, 30; May 1-2, 5
Returns: wide and good availability returns thru June 30, 2019
To book this, enter travel information on Skyscanner [skyscanner.com]
and then select your flights and favorite OTA to book with. For hotels, check out Hotwire's Hot Rates [hotwire.com]
hotels or look for latest promotions here [hotels.com]
Hong Kong Travel Guide [discoverhongkong.com]