Iran war oil prices: Brent Crude rises as Strait of Hormuz supply threatens global markets

Brent crude and global oil prices spiked sharply as conflict escalated following the U.S. and Israeli strikes on Iran.

Carriers are halting Hormuz transit

  • Shipping through the Strait of Hormuz — a chokepoint for about 20 % of global oil — has largely halted, heightening supply risk.
  • Major shipping lines have stopped routine transits through the Strait of Hormuz due to heightened conflict risk, forcing some vessels to seek safe shelter instead of continuing planned routes.
  • While the U.S. has reduced its reliance on imports, touching a a 40-year low, Asian economies remain highly dependent on this vital route.

  • Analysts have warned disruptions could push Brent prices even higher — potentially above $90–$100/b if the strait remains blocked.
  • But the broader conflict has macro-economic implications: inflation risk with higher gasoline prices, supply chain disruption, and policy responses from producers and consumers.
  • Oil markets have already seen a sharp weekly increase following renewed Middle East hostilities.

Line chart of Brent crude oil futures (Aug ’25) from Jan. 2025 to Feb. 2026. Prices fall from the mid-$70s to the low $60s by spring, spike to nearly $79 in mid-June during Israel–Iran conflict escalation, decline through late 2025, then rebound to around $72 by late February 2026.

Routes are being rethought

The crisis isn’t isolated to Red Sea risks — the Iran escalation is forcing a broader reassessment of global vessel routing including through Hormuz and alternative passages.

  • Freight impact hinges on how long the strait remains constrained. Short-term pauses may have limited price impacts, but prolonged disruption could reshape trade flows and freight costs.
  • Lloyd’s List notes ships have been ordered to seek safe shelter rather than continue original transit plans, reflecting escalating safety and insurance considerations for carriers.

Map of Iran highlighting key oil and commercial ports, including Kharg Island, Bandar Abbas, Bandar Khomeini, Bushehr, Bandar Shahid, Chabahar, Port of Anzali, Amirabad and Nowshahr. Kharg Island is identified as Iran’s largest oil export terminal, handling over 90% of the country’s oil exports. The Strait of Hormuz is marked near Bandar Abbas and noted as a chokepoint that carries roughly 25% of global oil shipments.