With Tunisia off limits and Egypt and Turkey suffering from political problems, the travel industry is facing a capacity crunch.
There are now concerns that families, who haven’t yet booked holidays, are going to be priced out this summer.
David Hope, business group director at GfK Ascent, said that Portugal had already sold more 14-night summer holidays so far this year than during the whole of the trading period in 2015.
Other statistics also pointed to increased demand for so-called safer destinations.