Route guide

Sapporo to Seoul (CTS-ICN): Nonstop Upgrade & Award Space

Korean Air, Hahn Air Systems, Arcus-Air Logistic, Jin Air, and Asiana Airlines fly nonstop between Sapporo (CTS) and Seoul (ICN), roughly 95 times a week. Because so many carriers compete on this route, premium seats turn over daily, and upgrade or award space can open and close within hours. 2LNR tracks confirmed availability on every CTS to ICN departure, so you know which flights have space before you book.

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

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95
Nonstop flights a week
884 mi
Nonstop distance
Free
To get started

Confirmed upgrade & award space on every CTS to ICN 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 Sapporo to Seoul 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 CTS to ICN 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 CTS to ICN on the interactive route map, with schedules, connections, and route statistics.

Airlines flying Sapporo to Seoul nonstop

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

  • Korean Air
  • Hahn Air Systems
  • Arcus-Air Logistic
  • Jin Air
  • Asiana Airlines
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Frequently asked questions about CTS to ICN

How far is Seoul from Sapporo?
CTS to ICN covers about 884 miles nonstop. Flight times vary by aircraft and season; each scheduled departure on this page lists its own times.
Which airlines fly nonstop from CTS to ICN?
Korean Air, Hahn Air Systems, Arcus-Air Logistic, Jin Air, and Asiana Airlines fly the route nonstop. 2LNR tracks confirmed upgrade and award space on each of them.
How many flights a week are there from CTS to ICN?
About 95 nonstop flights a week run between Sapporo and Seoul in the current schedule, operated by Korean Air, Hahn Air Systems, Arcus-Air Logistic, Jin Air, and Asiana Airlines. Frequency shifts by season; the calendar on this page reflects what's currently scheduled.
How do I check upgrade or award availability on CTS to ICN?
Open the CTS to ICN calendar on this page to see confirmed upgrade and award space by date. You can also set an alert on the Sapporo to Seoul route, and 2LNR will notify you when space opens. It's free to start.

Never miss CTS to ICN upgrade or award space

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