Please be aware that Seoul has multiple airports and that these results are only for Gimpo International airport.
The best month to arrive at Seoul is April and the most expensive month to fly is September. (Average prices, based on 278 datapoints.)
The best day to arrive at Seoul is Tuesday and it would be best to avoid Friday, as prices are on average 154.06% higher than on Tuesday. (Average prices, based on 240 datapoints.)
At Seoul the most flights depart around 23:00. (Hourly flights, based on 295 datapoints.)
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