Air Mauritius has cancelled at least 18 flights, including a number of services due to have flown between the island and Heathrow from Sunday through to Tuesday.
Tropical cyclone Freddy triggered a warning class III on the Indian Ocean island, with weather conditions expected to deteriorate further on Monday afternoon (20 February).
In an updated statement, the UK Foreign Office said: "You should remain vigilant and follow the advice of local authorities.
"Cyclones can cause extensive damage to property. There is a well-structured system of phased warnings. During a cyclone you are not allowed to leave your accommodation and car insurance policies often cease to be valid."