According to Spanish newspaper El Pais, Harry, 34, and Meghan, 37, flew to the Balearic island by private jet with their security team and returned to London earlier this week.
The report says the royal couple spent five days in a private villa, to celebrate Meghan’s 38th birthday, which was on August 4.
It marks three-month-old Archie’s first trip abroad, ahead of the Sussexes’ royal tour of Africa this autumn.
No images have emerged of the duke and duchess and it has been reported that ‘local security forces were not needed.'
Yahoo UK has reached out to Buckingham Palace for comment.
Meghan once enjoyed a girls’ trip to Ibiza with fashion designer Misha Nonoo and childhood friend Benita Litt in August 2016.
Misha is widely reported to have been the friend who set Meghan and Harry up on a blind date in summer 2016, while Benita’s daughters Rylan and Remi Litt were bridesmaids at the royal wedding.
Harry and Meghan are also expected to spend some time at the Queen’s Balmoral estate in Scotland this month.
The duke will attend the Rugby League Challenge Cup Final at Wembley Stadium on Saturday 24 August. Harry has been Patron of the Rugby Football League since December 2016.