Yes, there are multiple flights from Thailand to Dayton for under ฿31,096. The cheapest flight booked recently is on Japan Airlines for just ฿28,266, but on average you can expect to pay ฿28,391.
There are no direct flights from Thailand to Dayton, but Cheapflights can provide you with all the information you need to find the fastest route with the fewest stops.
For as low as ฿28,360, Japan Airlines can have you in Dayton from Thailand in 26h 39m.
Flying on Japan Airlines is currently your cheapest option to Dayton, with prices starting at ฿28,267.