Are there nonstop flights from Rome (CIA) to Bangkok (BKK)?

No. The fastest connection is via Sofia, about 11h 24m of total flying time.

What is the fastest connection from Rome (CIA) to Bangkok (BKK)?

via Sofia ≈ 11h 24m, via Amman ≈ 11h 49m, via Manchester ≈ 14h 20m (estimated flying time, excluding layovers).

Ciampino–G. B. Pastine International Airport (CIA) to Suvarnabhumi Airport (BKK)・8,848 km

No nonstop flights. The fastest connection is via Sofia (SOF), about 11h 24m of flying time (layover not included).

None.

3 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.