Yes, there are multiple flights from Bangkok to Astana for under ฿ 32,961. The cheapest flight booked recently is on Turkish Airlines for just ฿ 30,145, but on average you can expect to pay ฿ 36,437.
There are no direct flights from Bangkok to Astana, but Cheapflights can provide you with all the information you need to find the fastest route with the fewest stops.
Expect the weather to be around 36 °C on average in April. As the temperature peaks, try to get your plans done early, as flight price and availability will have an impact on your travels. The climate in Astana is generally colder than in Bangkok.
Departing from Bangkok to Astana will take you 18h 25m. Both multi-stop and direct flights can be found to your destination and back.
According to our current data, Turkish Airlines (฿ 30,145), and Aeroflot (฿ 45,727) offers the cheapest pricing from Bangkok to Astana.