Yes, there are multiple flights from Thailand to Algiers for under ฿ 48,030. The cheapest flight booked recently is on Qatar Airways for just ฿ 45,209, but on average you can expect to pay ฿ 51,363.
There are no direct flights from Thailand to Algiers, but Cheapflights can provide you with all the information you need to find the fastest route with the fewest stops.
For as low as ฿ 45,209, Qatar Airways can have you in Algiers from Thailand in 17h 50m. This flight may include one or multiple stops.
Qatar Airways, at ฿ 45,209, was found to be the cheapest airline from Thailand to Algiers. An alternate airline flying to your destination would be KLM.