It was also trying to contact a further 2,500 `flight only` tourists in Gambia to arrange for their departure on the earliest available flight, it said.
Jammeh, who seized power in a coup 22 years ago, lost a December election to Adama Barrow, who once worked as a security guard at a shop in north London, but has refused to recognize the result.
Jammeh is one of Africa`s most capricious and ruthless autocrats who has resorted to torturing or killing perceived opponents, according to human rights groups.
Despite the reputation of its leader, Gambia`s Atlantic ocean beaches are popular with European holidaymakers seeking winter sun, sea and sand.
A senior Nigerian military source said this week the ECOWAS regional bloc was getting ready to remove Jammeh by force if he refused to hand over to Barrow by a Jan. 19 deadline determined by the constitution.
Barrow is currently in neighboring Senegal, fuelling speculation that he may be sworn in as President at the Gambian embassy in Dakar - technically Gambian soil.
Hundreds of Gambians have also been fleeing over the border to Senegal in the last few days, fearing civil unrest.