Booking with Korean Air 42 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seoul to Jeju City. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Currently, the most affordable month to book a Korean Air flight from Seoul to Jeju City in March, with an average price of HK$257. Conversely, traveling with Korean Air from Seoul to Jeju City in August will be the most expensive, with an average cost of HK$576. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.
The most Korean Air flights from SEL to CJU are scheduled on a Saturday (29 on average). You will have fewer Korean Air flight options on Tuesday, which is when the least amount of flights are scheduled (27 on average).
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