Yes, there are multiple flights from Thailand to Kitakyushu for under ฿ 20,926. The cheapest flight booked recently is on ANA for just ฿ 20,119, but on average you can expect to pay ฿ 20,119.
There are no direct flights from Thailand to Kitakyushu, but Cheapflights can provide you with all the information you need to find the fastest route with the fewest stops.
A quick flight from Thailand to Kitakyushu can take about 19h 35m. ANA provides one of the quickest options available for as low as ฿ 20,120.
Flying on ANA is currently your cheapest option to Kitakyushu, with prices starting at ฿ 20,120.