After a series of attacks by Houthi forces on Saudi airports, a growing number of countries have issued advisories urging citizens not to travel to the kingdom.
On the first two days of the week, Australia and New Zealand became the latest to issue travel advisories restricting trips to Saudi Arabia, following similar warnings from the US, Canada, the UK, South Korea and Japan.
Australia's Department of Foreign Affairs and Trade advises citizens to avoid King Khalid International Airport in Riyadh and to "reconsider" travel to other Saudi airports.
New Zealand's Ministry of Foreign Affairs and Trade urges citizens not to travel to the Saudi capital's main airport or the provinces of Najran, Jazan and Asir for any reason, and to avoid "non-essential" trips to Saudi Arabia as a whole.
The US Embassy in Riyadh on Sunday advised American citizens to reconsider travel to the kingdom, citing the risk of attacks from Iran and Iranian-backed Houthi forces.
Global Affairs Canada also issued an advisory against non-essential travel to all parts of Saudi Arabia.
South Korea's Foreign Ministry recommended that citizens already in Saudi Arabia leave unless they have essential business, and called on those planning to travel to the kingdom to cancel their trips.
The UK Foreign, Commonwealth and Development Office urged citizens to avoid travel to Jeddah and Dammam, as well as all airports except Medina International Airport, unless for essential reasons.
The warnings come as Saudi Arabia faces mounting pressure after five attacks on its airports in less than a week.
According to the Saudi General Authority of Civil Aviation (GACA), one person was killed and 11 others injured on Sunday when a flying object struck King Khalid International Airport.
Earlier, a Houthi attack on the same airport on Saturday killed 13 people and wounded more than 300, making it the deadliest attack on Saudi Arabia in more than a decade.
The Houthis claimed responsibility for all four previous attacks on Saudi airports; no group has so far claimed the Sunday attack.
King Khalid International Airport and King Fahd International Airport in Dammam remain closed after the attacks, severely disrupting aviation across the Middle East.
The attacks have also disrupted flights to and from King Abdulaziz International Airport in Jeddah.
According to flight-tracking site Flightradar24, more than 150 flights were cancelled and 374 delayed at Jeddah airport on Sunday.
Brendan Sobie, an independent analyst and consultant based in Singapore, said it is too early to predict the impact of the attacks on aviation in the region and beyond.
"As was the case with the Iran war and the impact of that crisis on the UAE, Kuwait and Bahrain, the impact of this latest crisis depends on how long it lasts, how long Riyadh airport is closed, and how extensive and how long the restrictions will be after the airport reopens," Sobie told Al Jazeera.
