Please be aware that Seoul has multiple airports and that these results are only for Incheon International Airport.
The best month to arrive at Seoul is December and the most expensive month to fly is May. (Average prices, based on 526 datapoints.)
The best day to arrive at Seoul is Wednesday and it would be best to avoid Saturday, as prices are on average 13.03% higher than on Wednesday. (Average prices, based on 3590 datapoints.)
The cheapest airline flying to Seoul is Air China. They are 37% cheaper than Jeju Air. (Average prices, based on 648 datapoints.)
At Seoul the most flights depart around 23:00. (Hourly flights, based on 861 datapoints.)
From Seoul it is on average the cheapest to fly to Osaka and to Kuala Lumpur. (Average prices, based on 3225 datapoints.)
From Seoul most of the flights depart to Tokyo, second best connected from Seoul is Shanghai. (Daily flights, based on 133 datapoints.)
