An update to the 10 April 2026 aviation hub-shift brief — reflecting the US naval blockade of Iranian ports, the failure of the Islamabad talks, and operational divergence that is now locked in through Q2.
The v1.0 thesis — that the ceasefire had changed the headlines but not the operational map — has hardened in four days. On 13 April, US Central Command imposed a naval blockade on Iranian ports. The Islamabad talks failed on 12 April. EASA extended Conflict Zone Information Bulletin CZIB 2026-03 R5 on 9 April, directing EU air operators to avoid Bahrain, Iran, Iraq, Israel, Jordan, Kuwait, Lebanon, Qatar, UAE, Oman, and Saudi Arabia airspace until at least 24 April.
For companies with Gulf exposure: this is no longer a contingency-planning exercise. The divergence between Gulf hubs (constrained, expensive, insurance-restricted) and Istanbul (operational, insured, adding routes weekly) is now locked in through Q2 at minimum. Companies that have been waiting to see should treat the reallocation decision as made.