Business Class passengers can choose from an even more varied menu, including both traditional dishes such as rice with five-spice grilled pork and Western dishes such as chicken frittata. Vietnam Airlines serves hot meals on flights during the following hours: 5 a.m – 8 a.m., 11 a.m. – 1 p.m. and 5:30 p.m. – 8 p.m, with menus updated every 15 days.