An airline spokesperson made the announcement in Hanoi saying the flights would begin on June 6 with special introductory prices starting as low as US$25 (VND599,000).
Tickets can be booked online at the airlines website at http://www.vietjetair.com/Sites/Web/vi-VN/Home, at www.facebook.com/vietjetvietnam or by smartphone at https://m.vietjetair.com.
He said the inclusion of the new long-awaited route is expected to provide a huge financial boost to the airline, with passengers heading to Nha Trang for holiday or business.
Total travel time is 1 hour and 45 minutes each way, with flights to Thanh Hoa from Nha Trang taking off at 8:10 am and landing at 9:55 am four times weekly.
The return flights depart at 10:30 am in Thanh Hoa and arrive at 12:15 am in Nha Trang.