The reported closure of the Strait of Hormuz is tightening physical supplies of jet fuel, forcing airlines to rework operations and warning travellers to expect higher fares or cancellations
Reports that the Strait of Hormuz has been blocked by US president Donald Trump have triggered fresh worries about the flow of jet fuel along a critical shipping corridor. Financial markets reacted quickly and airport groups warned of looming shortages if shipments remain interrupted.
The trade body ACI Europe has told regulators that a prolonged closure could create fuel scarcities within weeks, just as the peak holiday season begins to increase demand. Airlines and airports are now assessing both the price impact and the more immediate problem of physical availability of jet fuel.
How the supply crunch is unfolding
The operational fallout combines rising prices with constrained deliveries. Analysts estimate that a partial cutoff of oil flows since late March has removed a significant share of seaborne fuel capacity, and that shortage is now translating into airport-level limits.
In northern Italy, suppliers issued NOTAM-style restrictions on Jet A-1 uplifts at Milan-Linate, Bologna, Venice-Marco Polo and Treviso, capping refuels to 2,000 litres per aircraft on 8 April and maintaining the cap at least until 23:59 on 9 April. Those limits prioritise medical, state and long-haul services and underline that the problem is increasingly about physical supply rather than hedged price positions.
Airline hedges and operational responses
Many carriers had pre-purchased fuel to smooth price swings, but hedging does not stop aircraft running out of fuel at particular airports. Low-cost and network carriers have described very different exposure timetables: some hedges cover needs only to the end of May or mid-May, while others say supplies could be guaranteed only to mid-end May. Airlines are adapting operationally by tankering extra fuel into airports where possible, extending turnaround times and adding technical fuel stops. Major operators have already announced capacity moves: a Scandinavian carrier cancelled more than 1,000 flights citing higher fuel costs, and some groups are drawing contingency plans that include grounding dozens of aircraft should rationing spread.
Which flights and markets are most at risk
Long-haul services tend to absorb fuel cost rises and operational headwinds differently from short-haul hops, and carriers have begun to reflect that in pricing. Several airlines, including Air France-KLM, have increased long-haul ticket prices, while carriers such as Air New Zealand and Qantas have already announced fare uplifts on international routes. Low-cost operators warn of possible cuts or cancellations to parts of their summer schedules: executives have suggested that a 5–10 percent reduction in capacity is conceivable if the blockade lasts into May or June. Regulatory rules also matter: the EU ban on tankering at departure airports can limit airlines’ ability to avoid local shortages, potentially pushing fares up on flights leaving EU hubs.
Price pass-through and passenger impact
Fuel costs that doubled during March are expected to be passed on to customers, particularly after seasonal hedges begin to expire. Executives from several carriers have urged consumers to book early to shield themselves from anticipated increases post-Easter and later in the summer. Travel managers and frequent flyers should expect more variability in schedules: airlines are warning of possible cancellations and advising passengers to secure insurance, understand their EU261 rights for compensation, and keep communication channels open for last-minute changes.
Practical advice for travellers and businesses
With uncertainty likely to persist through the spring, travellers and corporate programmes should prepare for disruption. Practical steps include buying comprehensive travel insurance, confirming refundable or changeable bookings where possible, and allowing longer connection windows to absorb potential technical stops introduced for refuelling. Companies managing high-frequency connections into affected airports are being advised to review duty-of-care protocols, update traveller communications and factor potential fuel-related delays into itineraries. Some service providers are offering expedited visa and passport support to help travellers focus on handling operational changes rather than paperwork.
Outlook and what could change the picture
Diplomatic developments will be decisive. If the Strait of Hormuz reopens quickly — a scenario some analysts tie to mid-April diplomacy — models suggest a rapid normalisation in deliveries and a potential 30–40 percent reduction in the recent price spike within about six weeks. If the blockade persists beyond May or June, the second quarter is likely to remain volatile with continued upward pressure on air fares and the risk of further schedule cuts. Meanwhile, airport bodies such as ACI Europe are urging regulators to consider temporary operational relief measures to prevent an operational “perfect storm” as peak travel season approaches.
