Cheap flights from Seoul to Jeju
Cheapest current fares: $35 in June 2026, 439 km direct flight in ~31m.
Cheapest month-by-month fares
Lowest available fare per calendar month from Seoul (ICN) to Jeju (CJU). Refreshed daily.
Seoul (ICN) → Jeju (CJU)
- June 2026 $35
- July 2026 $41
- May 2026 $42
- August 2026 $72
- September 2026 $229
- October 2026 $229
Frequently asked questions
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What is the cheapest month to fly from Seoul to Jeju?
Based on current 6-month forward fare data, June 2026 is the cheapest month to fly from Seoul (ICN) to Jeju (CJU), with fares starting from $35.
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What is the lowest current fare from ICN to CJU?
The lowest currently-listed fare from Seoul (ICN) to Jeju (CJU) is $35 on 2026-06-01.
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How long is the flight from Seoul to Jeju?
Direct flights from ICN to CJU cover approximately 439 km (273 miles), with an estimated flight time of 31m. Operating airlines: 7C.
Related guides for this route
Sibling pages — full route detail, airport overviews, visa context, per-airline routes.