Seoul (ICN) → Jeju (CJU)
Incheon International Airport to Jeju International Airport · 238 nm (441 km) · about 1 h nonstop
Cheapest economy fares, checked daily · 39 days of history
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Economy
last checked 24h agoCoyne Aviation · nonstop · 1h 15m · travel Nov 25 · sold via Clickavia
When it's cheapest to travel
Travel dates of the cheapest fare found at each of our 48 daily checks — where the low fares were, not every date.
| Sep 2026 | $23 | 2× |
| Oct 2026 | $19 | 19× |
| Nov 2026 | $18 | 18× |
| Dec 2026 | $19 | 9× |
| Tuecheapest | $19 | 9× |
| Mon | $20 | 27× |
| Wed | $20 | 12× |
| Checked | Fare | Airline | Stops | Travel | Sold via | |
|---|---|---|---|---|---|---|
| 2026-10-24 | $20 | Coyne Aviation | nonstop | Nov 25 | Clickavia | Book ↗ |
| 2026-10-23 | $20 | Coyne Aviation | nonstop | Nov 25 | Авиасейлс | Book ↗ |
| 2026-10-21 | $21 | Coyne Aviation | nonstop | Nov 30 | Clickavia | Book ↗ |
| 2026-10-20 | $23 | Coyne Aviation | nonstop | Nov 23 | Clickavia | Book ↗ |
| 2026-10-19 | $22 | Coyne Aviation | nonstop | Nov 30 | Clickavia | Book ↗ |
| 2026-10-19 | $22 | Coyne Aviation | nonstop | Nov 30 | — | Book ↗ |
| 2026-10-18 | $22 | Coyne Aviation | nonstop | Oct 26 | — | Book ↗ |
| 2026-10-16 | $21 | Coyne Aviation | nonstop | Dec 2 | — | Book ↗ |
| 2026-10-16 | $21 | Coyne Aviation | nonstop | Dec 2 | — | Book ↗ |
| 2026-10-15 | $21 | Coyne Aviation | nonstop | Dec 2 | — | Book ↗ |
| 2026-10-14 | $21 | Coyne Aviation | nonstop | Dec 2 | — | Book ↗ |
| 2026-10-13 | $20 | Coyne Aviation | nonstop | Dec 7 | — | Book ↗ |
Airlines selling the cheapest fares
Which carrier had the lowest fare on each of our checks over the last 90 days.
- Coyne Aviation ×48
About this route
Seoul (ICN) to Jeju (CJU) is one of the busiest air routes in its market (Asia-Pacific). It links Incheon International Airport in South Korea with Jeju International Airport in South Korea. The great-circle distance is about 238 nautical miles (274 statute miles), so expect roughly 1 hours in the air nonstop.
Every night we ask our fare provider for the cheapest one-way economy fare other travellers recently found on this route and record it, with the airline and the seller it was found with. A fare is flagged as a deal when it falls at least 30% below the route's 90-day typical price. Prices are a research starting point, not live availability — the booking links open the itinerary so you can confirm what's on sale right now.
Fares are approximate, from public sources, and can be stale — always verify before booking.