The best month to fly between Hong Kong and Seoul is September and the most expensive month to fly is June. (Average prices, based on 310 datapoints.)
The best day to arrive at Hong Kong is Monday and it would be best to avoid Saturday, as prices are on average 39.38% higher than on Monday. (Average prices, based on 888 datapoints.)
The cheapest airline flying from Hong Kong to Seoul is Hong Kong Express. They are 70% cheaper than Cathay Pacific. (Average prices, based on 316 datapoints.)
The best time to fly is at around 2. (Average prices, based on 545 datapoints.)