Route guide

Karatsu to Nagasaki (IKI-NGS): Nonstop Upgrade & Award Space

OC flies nonstop between Karatsu (IKI) and Nagasaki (NGS), roughly 14 times a week. With OC operating this route so often, premium seats still turn over daily, and upgrade or award space can open and close within hours. 2LNR tracks confirmed availability on every IKI to NGS 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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14
Nonstop flights a week
58 mi
Nonstop distance
Free
To get started

Confirmed upgrade & award space on every IKI to NGS 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 Karatsu to Nagasaki 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 IKI to NGS 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 IKI to NGS on the interactive route map, with schedules, connections, and route statistics.

Airlines flying Karatsu to Nagasaki nonstop

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

  • OC
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Frequently asked questions about IKI to NGS

How far is Nagasaki from Karatsu?
IKI to NGS covers about 58 miles nonstop. Flight times vary by aircraft and season; each scheduled departure on this page lists its own times.
Which airlines fly nonstop from IKI to NGS?
OC is currently the only airline flying IKI to NGS nonstop. 2LNR tracks confirmed upgrade and award space on every OC departure.
How many flights a week are there from IKI to NGS?
About 14 nonstop flights a week run between Karatsu and Nagasaki in the current schedule, operated by OC. Frequency shifts by season; the calendar on this page reflects what's currently scheduled.
How do I check upgrade or award availability on IKI to NGS?
Open the IKI to NGS calendar on this page to see confirmed upgrade and award space by date. You can also set an alert on the Karatsu to Nagasaki route, and 2LNR will notify you when space opens. It's free to start.

Never miss IKI to NGS upgrade or award space

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

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