Are there nonstop flights from Barcelona (BCN) to Bangkok (DMK)?

No. The fastest connection is via Dubai, about 12h 49m of total flying time.

What is the fastest connection from Barcelona (BCN) to Bangkok (DMK)?

via Dubai ≈ 12h 49m, via Riyadh ≈ 13h 2m, via Shenzhen ≈ 14h 48m (estimated flying time, excluding layovers).

Josep Tarradellas Barcelona-El Prat Airport (BCN) to Don Mueang International Airport (DMK)・9,685 km

No nonstop flights. The fastest connection is via Dubai (DXB), about 12h 49m of flying time (layover not included).

None.

6 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.