Airport route guide

Upgrade & Award Space from Jeju (CJU)

From Jeju International Airport (CJU) in KR, Jin Air, Korean Air, and Coyne Aviation fly nonstop to 31 destinations. It's enough volume to carry real upgrade and award inventory, though the best seats to Seoul tend to go quickly. 2LNR monitors confirmed space on each Jeju route so you can act while it's still available.

Data current as of July 22, 2026, refreshed on an ongoing basis as new schedules and seats are confirmed.

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31
Nonstop destinations
30+
Airlines in award search
Free
To get started

Confirmed upgrade & award space on every CJU route

2LNR tracks confirmed upgrade and award availability on American, Delta, and Alaska and across 30 airlines, segment by segment, date by date. Pick any Jeju destination below to open a calendar of departures with real availability, or watch a route and get alerted when space opens.

See real availability

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

Set an alert

Premium inventory turns over fast. Watch a Jeju route and 2LNR notifies you when space appears.

Plan on the map

Explore every CJU nonstop on the interactive route map, with connections and route statistics.

All nonstop destinations from Jeju (CJU)

31 nonstop destinations with active service from Jeju International Airport. Each route links to its confirmed upgrade and award availability.

Explore CJU routes on the interactive map →

Frequently asked questions about Jeju (CJU)

How many nonstop destinations does Jeju International Airport (CJU) serve?
Jeju International Airport has active nonstop service to 31 destinations. The busiest markets from CJU are Seoul, Busan, and Cheongju-si. The full list, with live upgrade and award availability for each route, is on this page.
Which airlines fly upgrade-trackable routes from CJU?
Jin Air, Korean Air, and Coyne Aviation operate the most tracked routes from Jeju, in that order. 2LNR covers upgrade and award space on more than 30 airlines, so other carriers serving CJU appear on their routes as well.
How do I check upgrade or award availability from CJU?
Pick any destination on this page, such as Seoul, to open a calendar of CJU departures with confirmed upgrade and award space, date by date. You can also set an alert so 2LNR notifies you when space opens on a route you care about.
Does 2LNR track flights from CJU?
Yes. Every active nonstop route from Jeju International Airport is tracked, 31 destinations in total, and what's shown is confirmed availability rather than a forecast. It's free to start.

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