Are there nonstop flights from Nagasaki (NGS) to Seoul (GMP)?

No. The fastest connection is via Osaka, about 2h 36m of total flying time.

What is the fastest connection from Nagasaki (NGS) to Seoul (GMP)?

via Osaka ≈ 2h 36m, via Nagoya ≈ 2h 54m (estimated flying time, excluding layovers).

Nagasaki Airport (NGS) to Seoul Gimpo International Airport (GMP)・589 km

No nonstop flights. The fastest connection is via Osaka (KIX), about 2h 36m of flying time (layover not included).

None.

2 one-stop options, sorted by estimated flying time. Tap one to see the airlines on each leg and booking links.

Times are estimated from distance. Check schedules, frequency and availability with the airline or a booking site.