About 9 hours flight time if you could fly direct, but all current flights connect through Sydney, which is a 2 hour eastward flight and at least an hour layover. The flight from Sydney is about 9.5 hours in the air. The total travel time Adelaide to Bangkok is about 14 to 16 hours airport to airport.
A random search for flights from Adelaide (ADL) to Bangkok (BKK) shows:
OPTION 1: 12hr 30min via Sydney (SYD)
ADL - SYD Virgin Blue Flt 429 Dep 04:00pm 15Oct,Thu
SYD - BKK Emirates Airlines Flt 419 Dep 07:45pm 15Oct,Thu
Flight Duration: 11hr 10min; Layover Time: 1hr 20min; Total Trip Time: 12hr 30min
A flight from Frankfurt to Bangkok is 12 hours.
A flight from Bangkok to Phuket is about 1 hour.
A flight from Heathrow to Adelaide would take about 21 hours.
It is around 4,5 hrs flight time from Bangkok to Denpasar (Bali)
The flight will be 10 hours.
Approximately 7 hours flight from Karachi to Bangkok
26hours
The flight time from Tehran, Iran to Adelaide, Australia is 15 hours, 21 minutes.
The flight time from Kiev, Ukraine to Bangkok, Thailand is: 9 hours, 44 minutes
it takes 1 hour it takes 1 hour
4520mi/ 7274km
17 hours.