Yes, there are multiple flights from Bangkok Intl to Obihiro for under ฿ 20,975. The cheapest flight booked recently is on ANA for just ฿ 19,088, but on average you can expect to pay ฿ 39,883.
There are no direct flights from Bangkok Intl to Obihiro, but Cheapflights can provide you with all the information you need to find the fastest route with the fewest stops.
A quick flight from Bangkok Intl to Obihiro can take about 14h 05m. ANA provides one of the quickest options available for as low as ฿ 59,241.
ANA, at ฿ 19,088, was found to be the cheapest airline from Bangkok Intl to Obihiro..