Are there nonstop flights from Hanoi (HAN) to Jeju City (CJU)?

No. The fastest connection is via Hangzhou, about 3h 53m of total flying time.

What is the fastest connection from Hanoi (HAN) to Jeju City (CJU)?

via Hangzhou ≈ 3h 53m, via Shanghai ≈ 3h 53m, via Nanjing ≈ 3h 55m (estimated flying time, excluding layovers).

from 15,000 JAL miles, from 18,500 ANA miles (economy, one way, based on the published award charts).

Noi Bai International Airport (HAN) to Jeju International Airport (CJU)・2,450 km

No nonstop flights. The fastest connection is via Hangzhou (HGH), about 3h 53m of flying time (layover not included).

With milesJAL 15,000 miles+ (via PVG)ANA 18,500 miles+ (via SZX)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

19 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.