King Charles and Queen Camilla had two very different travel plans as they began their royal tour of Australia and Samoa.

On Friday, October 18, the royal couple arrived in Sydney, Australia, and appeared together for a formal welcoming ceremony. However, as People reported, they departed from London, England, on separate flights.

According to the media outlet, the Court Circular, the official royal engagement record, shows that King Charles left London with Queen Camilla on October 17.

According to People magazine, the queen departed separately and, unlike the king, enjoyed a private vacation between stays to allay her known fear of flying.

“Queen Camilla is said to have a phobia of flying and used to leave early for royal tours, interrupting the trip with a stop at her favorite spa,” People reports. The spa is a residential health care facility focused on “healing, prevention, and rejuvenation” through naturopathic, homeopathic, yoga, and ayurvedic remedies. [This is the first Commonwealth tour since Prince Charles became King following the death of his mother, the late Queen Elizabeth II. This whirlwind trip is also Prince Charles' most important work trip since he was diagnosed with unspecified cancer in February of this year.

As Marie Claire previously reported, the King will suspend chemotherapy for the duration of the royal tour, instead traveling with two doctors who will monitor his health throughout the visit.

“He will pause the cancer treatment he has been receiving since February,” the Times reported, adding that the monarch will be “closely monitored” while traveling abroad.

According to a royal court official interviewed by the Times, “The decision to suspend treatment and resume it upon his return to the UK was in accordance with advice from his doctors.”

Prince Charles visited Australia in March 1983 with his then wife, the late Princess Diana.

According to various reports, Prince Charles became increasingly exasperated during this trip, which took place shortly after the start of his relationship with Princess Diana, and was said to have been a “terrifying baptism of fire” for her at the time.

As the crowd was introduced to Diana and quickly fell in love, Prince Charles reportedly became resentful of his bride's newfound fame. Tina Brown wrote in The Diana Chronicle. Victor Chapman, who served as press secretary on the tour, was accustomed to receiving late-night phone calls from Charles complaining about the lack of coverage about him compared to the praise his wife was getting.”

“He took it out on me,” Diana told her husband's biographer. 'He was jealous. I understood that jealousy, but I could not explain that I did not ask for it.