Airplane mode activated.

Prince Harry made the journey across the pond from the United Kingdom to California recently and made one flight attendant feel very special.

The Duke of Sussex, 38, was flying back to London to testify against Mirror Group Newspapers in their high-profile celebrity phone-hacking case. But on the plane ride back to his current home in Montecito, Calif., Harry reportedly gifted a cabin crew member, who goes by the alias “Holden Pattern” online, a present fit for the skies.

Harry gave Pattern a free edition of his bombshell memoir, “Spare.”

Pattern had shared his encounter with Harry on board their American Airlines flight on social media yesterday.

The steward found the book “in my luggage that a passenger gave to me.”

Harry was just in England for three days to participate in the trial and jetted back to the Golden State on Thursday.

He allegedly stayed at his former home at Frogmore Cottage during the short vacation and didn’t meet with any members of the royal family — including father King Charles and brother Prince William.

Harry and his wife Meghan Markle resided at Frogmore after they got married in 2018. However, the monarch, 74, evicted the couple earlier this year after they made the move to California.

Charles had begun making plans regarding the eviction process in January — around the same time “Spare” hit the bookshelves.

The king plans to give the cottage to his disgraced brother, Prince Andrew, and is trying to get him to leave his home at the Royal Lodge.

The Duke of York, 63, has lived in the $37 million property with his ex-wife Sarah Ferguson since the early 2000s.

Andrew is “refusing to budge” from the home and Charles has been trying to get him to leave the 30-room mansion since April.

However, the former Prince of Wales does not actually have the final say if Andrew departs the home or not.

The UK’s chancellor of the exchequer can also force Andrew to vacate the area. This position is the chief finance minister in the Parliament and is responsible for setting volumes of taxation and public spending across the country.

As for Harry’s memoir, the 400-page book is a deep dive into his estranged relationships with William, 40, Charles, and the emotions he felt after the 1997 death of his mother, Princess Diana.

Harry also notably called the Duke of Cambridge his “arch-nemesis,” addressed his 2005 Nazi uniform debacle, and claimed William once physically attacked him in a fight over Markle, 41.

Harry was reportedly paid $20 million by publisher Penguin Random House and he could very well be selling the film rights to his book sometime in the near future.