Yes, there are multiple flights from Hanoi to Kazakhstan for under 29,926,336₫. The cheapest flight booked recently is on Turkish Airlines for just 28,890,424₫, but on average you can expect to pay 97,237,568₫.
There are no direct flights from Hanoi to Kazakhstan, but Cheapflights can provide you with all the information you need to find the fastest route with the fewest stops.
Departing from Hanoi to Kazakhstan will take you 18h 40m. Both multi-stop and direct flights can be found to your destination and back.
Cheapflights users have booked flights from Hanoi to Kazakhstan round-trip from 28,890,424₫. Other airlines that can offer you cheap pricing are Aeroflot, from 30,709,024₫, and Lufthansa, from 296,846,240₫.