Route guide

Seoul to Jeju (ICN-CJU): Nonstop Upgrade & Award Space

Coyne Aviation flies nonstop from Seoul (ICN) to Jeju (CJU) just twice a week. With so few departures, each one carries the only premium seats on the route that day. 2LNR tracks confirmed upgrade and award space on all of them, so a rare opening doesn't slip past you.

Data current as of July 21, 2026, refreshed on an ongoing basis as new schedules and seats are confirmed.

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2
Nonstop flights a week
273 mi
Nonstop distance
Free
To get started

Confirmed upgrade & award space on every ICN to CJU departure

2LNR tracks confirmed upgrade and award availability on American, Delta, and Alaska and across 30 airlines, segment by segment, date by date. Open the calendar for Seoul to Jeju to see which departures have real space, or watch the route and get alerted when space opens.

See real availability

Confirmed upgrade and award seats on each ICN to CJU departure, checked against live inventory so you know what is open before you book.

Set an alert

Premium inventory turns over fast. Watch this route and 2LNR notifies you when space appears on a date you are tracking.

Plan on the map

See ICN to CJU on the interactive route map, with schedules, connections, and route statistics.

Airlines flying Seoul to Jeju nonstop

Carriers operating ICN to CJU nonstop in the current schedule. 2LNR tracks confirmed upgrade and award space on each of them.

  • Coyne Aviation
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Frequently asked questions about ICN to CJU

How far is Jeju from Seoul?
ICN to CJU covers about 273 miles nonstop. Flight times vary by aircraft and season; each scheduled departure on this page lists its own times.
Which airlines fly nonstop from ICN to CJU?
Coyne Aviation is currently the only airline flying ICN to CJU nonstop. 2LNR tracks confirmed upgrade and award space on every Coyne Aviation departure.
How often does ICN to CJU operate?
The nonstop currently runs twice a week, on Coyne Aviation. Thin schedules like this change by season, and an alert will catch anything added.
How do I check upgrade or award availability on ICN to CJU?
Open the ICN to CJU calendar on this page to see confirmed upgrade and award space by date. You can also set an alert on the Seoul to Jeju route, and 2LNR will notify you when space opens. It's free to start.

Never miss ICN to CJU upgrade or award space

Track confirmed availability, set alerts, and book with confidence. Free to start, no credit card required.

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