Are there nonstop flights from Osaka (KIX) to Athens (ATH)?

No. The fastest connection is via Istanbul, about 11h 56m of total flying time.

What is the fastest connection from Osaka (KIX) to Athens (ATH)?

via Istanbul ≈ 11h 56m, via Beijing ≈ 12h 1m, via Shanghai ≈ 12h 36m (estimated flying time, excluding layovers).

from 31,000 ANA miles, from 45,000 JAL miles (economy, one way, based on the published award charts).

Kansai International Airport (KIX) to Athens Eleftherios Venizelos International Airport (ATH)・9,297 km

No nonstop flights. The fastest connection is via Istanbul (IST), about 11h 56m of flying time (layover not included).

With milesANA 31,000 miles+ (via IST)JAL 45,000 miles+ (via DXB)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

13 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.