The US President on Wednesday said that the United States would bomb Iranian civil infrastructure every time Tehran fires at ships in the Hormuz Strait.
“The security situation in the Middle East remains highly volatile and travellers could be stranded with little warning and few options.
“Given this, we advise New Zealanders not to transit the Middle East, including through Dubai or Doha, unless their travel is absolutely essential and there are no other flight routes available through Asia or North America.”
The agency said those who decided travelling through the region was necessary should keep transit times to a minimum and be prepared for flight cancellations, delays, and airspace closures.
It also advised New Zealanders in Iran to leave as soon as possible, if it was safe to do so.
A limited number of flights are still operating from Khomeini International Airport in Tehran but airspace closures could occur at any time, it said.
Land routes out of Iran via Turkey and Armenia are still viable and have been successfully used by other New Zealanders to leave the country.
Anyone who could not leave Iran should follow the advice of local authorities and move to or remain in a safe place and ensure they have essential supplies such as food, water, torches, batteries or power banks and any medications.
The advisory said there are a number of steps people should take if they are at risk of drone or missile attacks:
New Zealanders who need urgent consular assistance should contact the 24/7 consular emergency line on +64 99 20 20 20.