A statement released by Kensington Palace earlier this month said: "This is the most complex tour undertaken by The Duke and Duchess to date, given the logistic and security considerations".
It added that from the modern leafy capital Islamabad to the vibrant city of Lahore, the mountainous countryside in the North, and the rugged border regions to the West, the visit will span over 1000km, and will take in Pakistan's rich culture, its diverse communities, and its attractive landscapes.
The couple looked rested and happy as they stepped off a Royal Air Force jet at the Pakistani Air Force Base Nur Khan in Rawalpindi, which is near the capital Islamabad.
During the latter trip to Lahore, Diana was helping to raise funds for a cancer centre built in the city by Khan.
Britain's Prince William, Duke of Cambridge unveils the plaques as he officially opens the new graduate building, the H B Allen Centre, at Keble College, Oxford University in Oxford, central England on October 3, 2019.
The Duchess of Cambridge, 37, stunned in a blue and white bespoke Catherine Walker - a traditional Pakistani outfit comprised of a flared kurti, a long shirt, and pants - as she stepped off the British Government's RAF Voyager plane alongside Prince William.
When the tour was announced, the High Commissioner for Pakistan Mohammad Nafees Zakaria said the upcoming royal visit was a reflection of the importance the United Kingdom attached to its relations with Pakistan.
After more than a decade, members of the Royal Family are making a visit to Pakistan. When Kate previously visited Malaysia in 2012 (where it is also customary to wear the garment), she did not wear the look - though she did dress modestly in trousers and a headscarf.
Kate Middleton wasted no time in putting her own twist on traditional fashion during her royal tour of Pakistan!
The Queen last travelled to the state in 1997, igniting controversy when she called on Pakistan and India to settle their differences in an address to parliament in Islamabad.
Her visits saw her lay a wreath at Commonwealth war graves, tour Lahore's iconic Badshahi Mosque, and visit a centre for disabled Afghan refugees.
Streets in Islamabad and around the country have been humming with festivities and celebrations to honour the royal pair with more than 1,000 police officers deployed for their security over the span of their five-day visit.
The visit showed that Pakistan has come out of "difficult times", he added.