The first round of high level US Iran talks in Switzerland has concluded with what mediators have described as “encouraging progress,” yet the path ahead remains strewn with obstacles. The immediate market reaction was a drop in oil prices, as Tehran announced it had secured waivers for oil and petrochemical exports, easing fears of a prolonged supply crunch. But beneath this initial relief lies a far more complex picture.
The ceasefire is fragile, the Lebanese front remains volatile, and the Strait of Hormuz, the world’s most critical oil chokepoint has been closed and reopened multiple times in recent days. The outcome of these negotiations will determine not only the price of crude but also the cost of everything from airline tickets to consumer goods.
If the 60‑day roadmap agreed in Switzerland holds, and if the technical committees can resolve the outstanding issues around Iran’s nuclear programme, the lifting of sanctions, and the permanent reopening of the Strait of Hormuz, the global oil market would see a significant and lasting supply boost. Goldman Sachs has already cut its Brent forecast for the fourth quarter of 2026 to $80 a barrel, down from $90, and expects WTI to average $75 in Q4 and $70 in 2027. Bank of America has similarly lowered its 2026 Brent forecast to $82. The return of roughly 1.5 million barrels per day of Iranian crude to international markets would significantly improve global supply availability, at a time when demand growth remains moderate.
The UAE, Kuwait and Iraq have already offered additional oil to customers, and Iraq plans to restore production to 4.2‑4.3 million barrels per day. In this scenario, oil prices could stabilise in the $75‑$85 range for Brent, with a residual geopolitical risk premium of $5‑$10 per barrel persisting. The reopening of the strait would allow the 25 million barrels of Iranian oil that have passed through the virtual blockade line since Monday to flow freely to global markets.
The risks of a breakdown are very real. ING analysts have warned that “moving towards a more permanent deal will be challenging, with very real risks of a flare up in hostilities during the 60 day ceasefire”. Israeli strikes in Lebanon killed at least 20 people on Saturday, just one day after a ceasefire with Hezbollah took effect. Iran has already closed the strait again, citing Israeli and US violations of the interim deal, and Trump has threatened to resume attacks.
If the negotiations collapse and hostilities resume, the Strait of Hormuz could remain disrupted through 2027. In that case, Goldman Sachs estimates that Brent could rise above $130 in late 2026 and average $105 for the year. Such a spike would reignite inflationary pressures across the global economy, particularly in energy importing nations, and could push the world into a recession.
The price of oil is the single largest variable cost for airlines, accounting for 20‑30% of operating expenses. When oil prices rise, jet fuel prices follow closely. According to the International Air Transport Association (IATA), jet fuel prices are forecast to reach $152 per barrel in 2026, up from less than $100 in 2025. Passenger ticket revenues are expected to climb, outpacing demand growth. A recent IATA poll found that 86% of travellers expect fares to track oil prices. If oil prices stabilise in the $75‑$85 range, airlines would still face high fuel costs, but the pressure would ease. Airfares would remain elevated but could begin to moderate.
However, if oil prices spike above $130, as in the failure scenario, the impact would be severe. Airlines would be forced to raise fares sharply, reduce the number of flights, and cut capacity. IATA has already warned that supply chain failures cost airlines at least $11 billion in 2025, and the industry’s net margin is projected to fall from 4.2% to 2.0% in 2026. A renewed oil shock would push many carriers into losses, lead to route cancellations, and make air travel unaffordable for a significant portion of the public.
Beyond aviation, the broader economy would feel the effects. Higher oil prices increase the cost of transportation, manufacturing, and heating, feeding into inflation across the board. The price of food, goods, and services would rise, squeezing household budgets and slowing economic growth. Central banks would face renewed pressure to raise interest rates, further dampening investment and consumption.
The US‑Iran talks have opened a window of opportunity, but that window could slam shut at any moment. The initial market optimism is justified, but it is tempered by the reality of ongoing violence in Lebanon, the fragility of the ceasefire, and the deep mistrust between the two sides. For now, oil prices are likely to remain volatile, swinging between hope and fear.