Are there nonstop flights from Boston (BOS) to Kitakyushu (KKJ)?

No. The fastest connection is via Seoul, about 14h 35m of total flying time.

What is the fastest connection from Boston (BOS) to Kitakyushu (KKJ)?

via Seoul ≈ 14h 35m (estimated flying time, excluding layovers).

Boston Logan International Airport (BOS) to Kitakyushu Airport (KKJ)・11,248 km

No nonstop flights. The fastest connection is via Seoul (ICN), about 14h 35m of flying time (layover not included).

None.

1 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.