Iran threatens regional airports as US aviation sanctions ground its carriers

Iraqi airports have halted Iranian flights following new US aviation sanctions², with the suspension applied at all four of the country’s airports after a sanctions threat³. The measures have sharply reduced Iran’s international air connections, and the United Arab Emirates and Oman have suspended flights operated by Iranian carriers⁵.

The lever is exposure to the dollar system. Treasury Secretary Scott Bessent said foreign companies risk secondary sanctions if they provide Iranian carriers with fuel or landing services⁴. One analyst quoted on the Iraqi decision described the choice as between secondary sanctions and “being frozen out of the international US dollar system,” adding that “Iraq’s in a very difficult position”². President Donald Trump described the wider strategy last month as “economic D-Day,” comparing it to the Allied assault on Nazi-controlled France^3,6.

Tehran has answered with a threat to regional aviation. Mohammad Mokhber, an adviser to Iran’s supreme leader, accused regional countries of “alignment with America” for blocking flights¹, and Iranian officials framed the position as: if we cannot fly, no one can⁴. Iran has warned that the airports of countries enforcing the sanctions could face disruptions⁷.

Why it matters to investors

Secondary sanctions are now reaching ordinary service providers rather than banks and shippers. Fuel supply and landing services⁴ are provided by ground handlers, airport operators and refuellers across the Gulf, which widens the set of companies that must now screen counterparties.

The retaliation threat extends the war’s risk premium from shipping lanes to civil aviation^1,7. That shows up in insurance, routing and schedule reliability before it shows up in earnings.

Markets registered it. UAE stock markets closed slightly lower on Friday, reversing early gains, after the warning on regional air travel⁸.

What to watch

The first item is whether more states follow Iraq, the UAE and Oman in suspending Iranian services^3,5, since each addition tightens the network effect the sanctions are designed to produce.

The second is whether the threat against regional airports⁷ translates into any actual disruption, which would change the risk calculation for carriers, insurers and Gulf airport operators rather than only for Iranian ones.

The third is the position of countries caught between the two. Iraq’s exposure to the dollar system was the stated reason for its decision², and other states with similar exposure face the same choice.