Prince Harry and Meghan Markle land in Sydney on way to New Zealand

Prince Harry and Meghan Markle have touched down in Sydney ahead of their long-awaited tour of Australia and New Zealand.

It's understood the royals landed at Sydney Airport a short time ago on a Qantas flight from London, not an earlier British Airways flight as had been previously reported.

Today show co-host Karl Stefanovic addressed the confusion over the airlines during an interview with NSW Premier Gladys Berijiklian this morning.

"Premier, I just wonder if you can clarify something for us... We did hear that they were coming in on the British flight but we have just heard from senior police officers in New South Wales, that they have in fact come in on the Qantas flight. Are you able to confirm that?" the presenter asked her.

"Karl, unfortunately, I can't. I don't know. But I'm sure someone I know will know. So I'll let you know," she replied.

The Duke and Duchess of Sussex are understood to be travelling with an entourage of 10 staff members, including press secretaries and a hairdresser.

It's also being reported that Meghan has invited her best friend, Toronto-based stylist Jessica Mulroney and her husband Ben, to join them and help her with her wardrobe in an "unofficial" capacity.

The Duke and Duchess' Australian tour details

Their first official royal tour will include time in Sydney, Melbourne, Dubbo and Fraser Island, as well as other Commonwealth countries, including Fiji, Tonga and New Zealand.

Prince Harry and Meghan Markle will be in Australia for a total of nine days, with a stacked itinerary that includes public picnics, farm visits and a "Fluoro Friday" for mental health, but are predominantly here for the Invictus Games.

Their arrival today is fairly low-key (as much as possible) as their official duties won't kick off until tomorrow.

It will begin with the couple meeting with the Governor-General Sir Peter Cosgrove and his wife, Lady Cosgrove at Admiralty House. They'll be joined by representatives from the Invictus Games to take in the "spectacular views" before heading to Taronga Zoo to meet two baby koalas.

Prince Harry and Meghan will then catch a ferry to the Opera House to watch a rehearsal by the Bangarra Dance Company and then take part in a royal walkabout to chat with "members of the public", later returning to the Governor-General's house for a "reception".

On Wednesday, they will head to the NSW city of Dubbo to "see first-hand the hardships local farmers are facing by visiting a local property" and host a public picnic in a local park.

Later in the week, they'll fly to Melbourne to be received by state politicians at government house, meet with youth leaders and do what any out-of-towner struggles with the first time: catch a tram.

On Friday, royal fans will be able to catch a glimpse of Prince Harry and Meghan at Bondi Beach, where they'll be spending time with OneWave, an initiative that engages with mental health. Later that day, they'll climb the Sydney Harbour Bridge with Prime Minister Scott Morrison to mount the Invictus Games flag and officially launch the event.

Over the weekend, the couple will be on Cockatoo Island and in the Domain for Invictus events, and on Monday will fly to Fraser Island - off the coast of Queensland - to meet with local elders and learn about the local indigenous history.

Prince Harry and Meghan will then depart for the South Pacific leg of the tour, before coming back to Australia on Friday, October 26, for a final two days in Sydney.