Yes, there are multiple flights from Thailand to Vigo for under ฿ 24,015. The cheapest flight booked recently is on Air France for just ฿ 23,745, but on average you can expect to pay ฿ 25,966.
There are no direct flights from Thailand to Vigo, but Cheapflights can provide you with all the information you need to find the fastest route with the fewest stops.
There are many flights that can get you from Thailand to Vigo in 23h 55m. Fly via Qatar Airways or Air France to get the fastest option. This flight may include one or multiple stops.
Flying on Air France is currently your cheapest option to Vigo, with prices starting at ฿ 23,746. Another option worth looking into is Qatar Airways, starting at ฿ 28,188 return.