Quick summary
The ongoing Strait of Hormuz blockade since February 28, 2026 is now triggering specific warnings from industry bodies of systemic jet fuel shortages starting in May 2026, with Europe and Asia facing the highest risk of severe flight cuts. Airports Council International Europe warned on April 16 that shortages could begin within three weeks if tankers don’t resume sailing, while energy analysts project 30–50% capacity reductions on Europe-Asia routes by June as airlines ration dwindling fuel stocks.
The International Energy Agency projects European jet fuel stocks will hit critical 23-day levels in June if Middle East supply losses exceed 50%. Smaller inland airports face the weakest position — partial cancellations will hit some carriers and hubs before others.
Hormuz closure creates cascading fuel crisis for airlines
The Strait of Hormuz — through which one-fifth of global crude oil and liquefied natural gas transited before the conflict — has been almost completely blocked since US and Israeli military operations against Iran began on February 28. The closure has restricted oil flows from 20 million barrels per day to a trickle, creating what the International Energy Agency calls the largest oil supply disruption in history.
Jet fuel and diesel prices are surging alongside physical oil trading at $150 per barrel premiums in Europe due to tanker shortages and the US naval blockade on Iranian exports. Refineries in Asia and Europe — which depend on Gulf crude for 20–30% of their jet fuel feedstock — are now operating with diminishing raw material supplies.
“The situation can, within the next three to four weeks, become systemic,” Rystad Energy economist Claudio Galimberti said in an interview with CNBC on April 15. “So you can have severe cuts of flights in Europe, already starting in May and June.”
The IEA released a record 400 million barrels from strategic reserves to stabilize prices after March supply losses of 8 million barrels per day, with April losses expected to worsen. Saudi Arabia and the UAE operate bypass pipelines with 2.6 million barrels per day capacity, but these systems cannot fully replace Hormuz volumes and are not running at maximum capacity.
| Region | Gulf dependency | Stock status | Risk level |
|---|---|---|---|
| Asia (India, Singapore) | 30% of supply | Critical by May | Severe cuts likely |
| Europe (UK, Netherlands) | 25% of supply | 23-day threshold June | Partial cancellations |
| Europe (Austria, Poland) | 20% of supply | Comfortable reserves | Moderate impact |
| North America | Minimal direct | Stable domestic | Codeshare disruption |
| Australasia | Via Singapore hub | Secondary exposure | Connection delays |
The European Commission acknowledged on April 15 that while no shortages exist currently, “supply issues could occur in the near future, in particular for jet fuels.” Airlines have little visibility to plan flight schedules — Airlines for Europe (A4E), representing carriers including Air France-KLM, Lufthansa, and Ryanair, has urged the EU to provide real-time jet fuel stock data at airports.
Energy Information Administration analysis confirms that bypass pipeline capacity remains insufficient to replace Hormuz transit volumes, leaving Asia and Europe exposed to prolonged supply constraints.
Historical precedent shows 20–30% capacity cuts possible
The 1979 Iranian Revolution briefly closed Hormuz, spiking oil prices to $40 per barrel — equivalent to $150 today when adjusted for inflation. Flights were cut 20–30% in Europe and Asia according to IEA historical data, with the crisis resolved after two months when Saudi Arabia ramped bypass pipeline capacity.
More recently, 2019 Iran-US tensions saw a 10% drop in Hormuz transit and jet fuel prices rising 25% in Asia without a full closure. The current blockade represents a far more severe disruption — unlike the 2019 drone attacks that caused brief supply dips, this is a sustained closure now entering its seventh week.
The impact varies significantly by airport and airline. Smaller, inland-located airports face weaker positions than major hubs due to limited fuel storage infrastructure. TotalEnergies CEO Patrick Pouyanne warned on April 14 that if the blockade extends beyond three months, the company won’t be able to supply all customers: “We’ll begin to face some serious supply issues in some products like jet fuel.”
What to do if you have May or June travel booked
Airlines are rationing fuel with limited advance notice, creating high rebooking risk for travelers with May–June bookings involving Europe or Asia.
- Existing May–June bookings to Europe or Asia: Contact your airline’s customer service hotline within 24 hours to request rebooking or travel credit. For EU departures, cite EU261 compensation rights — extraordinary circumstances like fuel shortages trigger €250–600 economy compensation for delays over three hours. British Airways: 0344 493 0787.
- Planning new trips: Avoid Gulf routing entirely. Book Pacific routes instead — Los Angeles to Singapore via Pacific adds approximately $200 but eliminates fuel supply risk. Use Google Flights to compare routing options and check real-time availability.
- Currently in transit through Asia or Europe: Check with gate agents immediately about potential diversions or cancellations. Keep EU261 claim documentation ready at ec.europa.eu/transport if your departure originated in the EU. Have backup accommodation plans for potential overnight delays.
- Monitoring the situation: Subscribe to IEA oil market reports at iea.org/reports for jet fuel stock alerts. The April 20 IEA supply report will indicate whether stocks have fallen below the critical 30-day threshold, signaling imminent 20–50% capacity cuts starting May 1.
Watch: The IEA’s April 20 monthly oil market report will reveal whether European and Asian jet fuel stocks have reached critical levels — if inventories fall below 30 days of supply, expect immediate and severe flight reductions across both regions.
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Questions? Answers.
Will US and Canadian travelers face flight cancellations from this fuel shortage?
North American travelers face indirect impact primarily through codeshare partnerships and connecting flights. United-Lufthansa codeshares on transatlantic routes connecting to Asia are at highest risk. Domestic US and Canada-Asia Pacific routes remain largely unaffected as North American refineries don’t depend on Gulf crude for jet fuel production.
How long could jet fuel shortages last if the Strait of Hormuz remains closed?
Energy analysts project shortages will become systemic within three to four weeks if the strait remains blocked. European stocks could hit critical 23-day levels in June according to IEA projections. Historical precedent from 1979 shows similar disruptions lasted approximately two months before Saudi bypass pipelines compensated, but current closure is more severe.
Are airlines required to refund tickets if flights are cancelled due to fuel shortages?
EU and UK regulations mandate full refunds for cancellations regardless of cause, including fuel shortages classified as extraordinary circumstances. US Department of Transportation rules require refunds for airline-initiated cancellations. Compensation for delays varies — EU261 provides €250–600 for delays over three hours on EU departures, but extraordinary circumstances may exempt airlines from compensation while still requiring refunds.
Which airlines are most vulnerable to jet fuel shortages?
European carriers with heavy Asia and Middle East exposure face highest risk — Lufthansa operates 50 weekly flights to Gulf destinations, while British Airways and Air France-KLM maintain extensive Asian networks. In Asia, Singapore Airlines and IndiGo are most exposed due to reliance on Gulf-sourced jet fuel. Emirates and other Gulf carriers face direct exposure but maintain larger on-site fuel reserves at Dubai and Doha hubs.
