Thọ Xuân Airport (IATA: THD, ICAO: VVTX) — also known as Thanh Hoá Air Base or Bái Thượng Air Base, formerly Sao Vàng Airport (Vietnamese: Sân bay Sao Vàng) — is an airport located in Sao Vàng town in Thọ Xuân District, Thanh Hóa Province, 45 km northwest of the provincial capital Thanh Hóa.

The airport is currently operated by Vietnam People's Air Force (VPAF).

[4] On the morning of 13 April 1972 the airfield was attacked by B-52s, destroying one MiG-17 and cratering the runway.

[6] On 15 June U.S. fighter-bombers again attacked the base cratering the runway.

[9] The base is home to the VPAF 923rd Fighter-bomber Squadron operating the Sukhoi Su-30MKK.