Are there nonstop flights from Santorini (JTR) to Katowice (KTW)?

No. The fastest connection is via Athens, about 2h 57m of total flying time.

What is the fastest connection from Santorini (JTR) to Katowice (KTW)?

via Athens ≈ 2h 57m, via Budapest ≈ 2h 58m, via Heraklion ≈ 3h 13m (estimated flying time, excluding layovers).

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

Santorini International Airport (JTR) to Katowice Wojciech Korfanty International Airport (KTW)・1,647 km

No nonstop flights. The fastest connection is via Athens (ATH), about 2h 57m of flying time (layover not included).

With milesANA 15,000 miles+ (via RHO)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

12 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.