$574 round trip is a low fare for San Francisco to Hong Kong round trip on Korean Air via ICN Incheon airport Seoul, South Korea. These $574 fares begin in late August and are available many weekdays into December 2015. Korean has had this route on sale much of the past week at $575.
Los Angeles LAX – HKG Hong Kong is very consistently $666 and $667 nearly all dates from late August into December.
Loyalty Traveler – San Francisco to Hong Kong $575 Korean, LAX $613 Air China (May 6). LAX was $613 last week with Air China.
$665.78 Korean Air
Los Angeles – Hong Kong September 1-10
On the miles front, Korean N class does not earn miles in Delta Skymiles. You can earn 50% miles with Alaska Mileage Plan. You can earn 70% flight miles with Korean Skypass for economy N class tickets.