Storm delays William and Kate's flight

The Duke and Duchess of Cambridge met cancer patients at a cancer hospital in Lahore.
The Duke and Duchess of Cambridge met cancer patients at a cancer hospital in Lahore.

The Duke and Duchess of Cambridge have been forced to reschedule the last day of their Pakistan tour after their plane got caught in a thunderstorm.

William and Kate were due to fly over the Khyber Pass in an engagement on Friday but a "pretty bad storm" saw their flight from Lahore to Islamabad turn back on Thursday evening.

The couple stayed at the Pearl Continental Hotel in the capital of Punjab overnight following two aborted landings by the RAF Voyager pilot.

Strikes of lightning could be seen from the carrier plane near the right wing as it shook with heavy turbulence.

William, who went to check on travelling media, made a reference to his time as an air ambulance pilot, joking: "I was flying!"

Surprised guests were treated to a glimpse of the royal couple on Friday morning as they left the five-star hotel.

The RAF Voyager landed in Islamabad after noon on Friday, about 18 hours after it was scheduled to arrive.

The couple's visit to a military post in the Khyber Pass, on the border of Afghanistan, was called off due to lack of time following the unexpected overnight stay.

It would have involved a security briefing from the Khyber Rifles, highlighting improved relations between Pakistan and Afghanistan.

The duke and duchess will still embark on their other scheduled engagement of the day: a visit to an army canine centre in Islamabad.

William and Kate will join handlers as they train dogs to recognise and scout out hidden explosive materials.

The duke and duchess spent Thursday daytime exploring Lahore, visiting the Badshahi Mosque and the Shaukat Khanum Memorial Cancer Hospital and Research Centre.

It brought back memories of William's mother, Diana, Princess of Wales, as they were two locations she visited in the country.

William and Kate played with young patients at the cancer facility and were shown around by Dr Aasim Yusuf, who welcomed Diana in 1996.

Australian Associated Press