Are there nonstop flights from Bangkok (DMK) to Karachi (KHI)?

No. The fastest connection is via Colombo, about 6h 37m of total flying time.

What is the fastest connection from Bangkok (DMK) to Karachi (KHI)?

via Colombo ≈ 6h 37m, via Kuala Lumpur ≈ 7h 42m, via Dubai ≈ 8h 8m (estimated flying time, excluding layovers).

Don Mueang International Airport (DMK) to Jinnah International Airport (KHI)・3,702 km

No nonstop flights. The fastest connection is via Colombo (CMB), about 6h 37m of flying time (layover not included).

None.

4 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.