Yes, there are multiple flights from Vietnam to Cala Vinas for under 25,316,456₫. The cheapest flight booked recently is on Turkish Airlines for just 23,613,348₫, but on average you can expect to pay 42,232,452₫.
There are no direct flights from Vietnam to Cala Vinas, but Cheapflights can provide you with all the information you need to find the fastest route with the fewest stops.
For as low as 23,613,348₫, Turkish Airlines can have you in Cala Vinas from Vietnam in 22h 25m. Both multi-stop and direct flights can be found to your destination and back.
Flying on Turkish Airlines is currently your cheapest option to Cala Vinas, with prices starting at 23,613,348₫. Another option worth looking into is Qatar Airways, starting at 27,203,684₫ round trip.