Saudi Arabia has postponed its flagship Future Investment Initiative until 2027, organisers said, after repeated Houthi missile and drone attacks shut Riyadh's international airport and sent government staff home.

The tenth edition of the state-backed conference, informally known as "Davos in the Desert", had been scheduled for 26-29 October in Riyadh. The FII Institute said new dates would be announced "very soon" and that existing registrations and partnerships would remain valid.

"Because this is our landmark tenth edition, we want to ensure it delivers the full scale, extraordinary quality, and unforgettable impact that our community has come to expect and truly deserves," chief executive Dr Maha bint Mishari Al Saud said in a statement.

The decision follows a Houthi strike on King Khalid International Airport on 10 October that killed more than a dozen people and wounded hundreds, according to official and media counts. The airport suspended operations and normal service has not resumed.

Government agencies in Riyadh told employees to work from home from Monday to Thursday this week, according to AFP. The Kingdom Centre, a 99-storey tower that houses the International Monetary Fund's regional office, asked workers to stay away until further notice, and companies in the King Abdullah Financial District gave staff similar instructions.

The conference had been expected to draw some of the biggest names in global finance. The FII website listed JPMorgan Chase's Jamie Dimon, Goldman Sachs' David Solomon, BlackRock's Larry Fink, Blackstone's Stephen Schwarzman and Citigroup's Jane Fraser among the speakers. Before the postponement, some participants planned to fly to Bahrain and drive five hours to Riyadh, CNBC reported.

Launched in 2017, the FII has been central to Crown Prince Mohammed bin Salman's push to attract foreign capital for Vision 2030, his plan to diversify the economy away from oil. Neom, the planned futuristic city, was unveiled at the first edition.

The attacks have already disrupted travel from Bangladesh. The Civil Aviation Authority of Bangladesh said 118 flights between Dhaka and Saudi Arabia were cancelled or suspended in the week to 18 October, affecting 18,362 passengers, most of them migrant workers heading to jobs in the kingdom.

Biman Bangladesh Airlines has suspended its Dhaka-Riyadh flights indefinitely and plans to resume Dammam services on 21 October, subject to approval from airport authorities. Passengers are being routed through Jeddah and Madinah instead.

The Houthis said on Monday they had attacked the Riyadh airport again, as well as Abha airport, Aramco facilities in Yanbu, the Shaybah oilfield and Saudi naval forces. The Saudi military said it intercepted several drones and missiles.