This comes as prime minister Boris Johnson forces all “non-essential” shops to close in a bid to stop the spread of coronavirus.
The operator will only be taking urgent calls until 25 March.
“Today, our team will be focusing on the urgent repatriation of customers currently still abroad, so we would ask our travel agent partners only to get in touch today for urgent issues, by emailing or leaving a message on our normal reservations number,” said Gordon McCreadie, If Only’s product and distribution director.