The Sun called it "holiday chaos." Two million seats vanished from the May schedule. Thirteen thousand flights axed worldwide in a single month. If you read the tabloid coverage of the jet fuel crisis, you would think every runway in Europe was about to go dark.
Here is the part the headlines skip: the flights being cancelled are the ones airlines did not particularly want to fly in the first place.
Lufthansa - Europe's largest airline group by revenue - cut 20,000 short-haul flights through to October. That sounds catastrophic. What it actually represents is roughly 1% of the group's total summer capacity. The routes being axed are the low-yield, low-load ones: Glasgow to Frankfurt, thin regional hops, flights that were already on the margins. The Heathrow to Ibiza run? It is going nowhere.
The fuel crisis is real. The disruption is being managed. What is changing is not whether planes fly - it is who profits from them flying, and who gets squeezed out.
The Background
To understand the current mess, you need to go back to the Strait of Hormuz - a narrow waterway at the mouth of the Persian Gulf, roughly 33 kilometres wide at its narrowest point, through which around 20% of the world's oil normally passes.
When war broke out between the U.S.-Israeli coalition and Iran in late February 2026, Iran effectively shut the strait down. Tankers stopped moving. That single chokepoint does not just carry raw crude oil - it is also the main export route for refined jet fuel from Gulf refineries that supply Europe and Asia directly. Cut the strait, and you cut supply at two levels simultaneously: the raw material going to refineries worldwide, and the finished product heading to airport fuel depots.
Jet fuel - the highly refined, ultra-low-sulphur kerosene that commercial aircraft burn - is not something you can easily substitute or quickly reroute. It has to be refined to precise specifications. The three largest global supply regions, the Persian Gulf, South Korea and Singapore, all either produce it from Gulf crude or export it through Gulf trade routes. According to CNBC, jet fuel prices doubled in certain markets between late February and early April - from around $99 per barrel to as high as $209.
Europe is structurally exposed. Around 75% of the continent's jet fuel imports trace back to the Middle East in one form or another. The International Energy Agency warned publicly that Europe had "maybe six weeks" of supplies when the crisis began escalating in April. Airlines hedge their fuel costs - they buy contracts in advance at fixed prices to protect themselves from exactly this kind of shock - but hedges run out, and not every carrier is equally covered. Lufthansa, for instance, has hedged roughly 80% of its 2026 requirements at pre-crisis prices. Smaller carriers are far more exposed.
What Is Actually Happening
The crisis is not a fuel shortage in the sense that planes are running out of kerosene mid-flight. It is a price shock that is making certain flights uneconomical to operate.
Airlines run on thin margins at the best of times. Fuel typically accounts for 20-30% of an airline's operating costs. When that cost doubles overnight, the maths on any flight that was already borderline simply stops working. A route between two regional airports, operating twice daily with half-empty planes, was probably marginal before the war. Now it is actively loss-making.
So airlines are doing what any rational business does: they are trimming the fat. Lufthansa's 20,000 cancellations are projected to save more than 40,000 metric tonnes of jet fuel. Turkish Airlines has also pulled back. SAS cancelled 1,000 flights in April. KLM scrapped 80 return services from Amsterdam's Schiphol airport. According to aviation analytics firm Cirium, global capacity for May has been reduced by about 3 percentage points, with all but one of the 20 largest airlines cutting flights.
The routes facing the deepest cuts share a profile: short-haul, low-revenue, high-frequency. Heathrow to Frankfurt runs 10 times a day. Seven probably suffices. Glasgow to Frankfurt goes a handful of times a week - at today's fuel prices, it does not go at all.
Budget carriers operating out of secondary airports are being hit hardest. Wizz Air's CEO warned in March that the company expected a 50 million euro hit to its 2026 net profit. Ryanair's CEO said the carrier would "look to cancel some flights and reduce capacity over the summer" if the shortage continued - though both airlines have since confirmed summer schedules will broadly hold.
For the major carriers with strong hedging positions and hub-and-spoke networks, this is painful but manageable. For the passenger who booked a cheap regional connection that no longer makes financial sense to operate, it is a different story.
The Money Trail
Here is the economic structure underneath the headlines.
When fuel costs double, airlines face a binary choice: raise prices, or cut flights. Most are doing both. Air France-KLM has increased economy fares on long-haul return flights by 100 euros, and by 10 euros on short- and medium-haul routes. The fare increases are not passed on uniformly - they are targeted at the routes where demand is inelastic, meaning passengers will pay more because they have few alternatives.
That is the hidden story inside this crisis. The fuel shock is functioning as a culling mechanism for low-margin aviation. The routes that survive are the profitable ones. The passengers who fly are the ones who can afford to absorb the higher fares. The "chaos" being reported is, in large part, the aviation market running a ruthless efficiency calculation in real time.
Delta Air Lines CEO Ed Bastian put it directly: any flying that is "on the margin, maybe not producing the yields we'd like, is likely going to be reconsidered." Delta announced an extra $2.5 billion in fuel costs for the quarter. That is not a rounding error - that is roughly equivalent to the GDP of a small Caribbean nation, absorbed in three months by a single airline.
The airlines with strong fuel hedging contracts - Lufthansa at 80% coverage for 2026 - are in a structurally better position than rivals who hedged less. This creates an unusual dynamic: the biggest, most established carriers weather the storm better, potentially emerging with stronger market positions once the crisis eases. Smaller budget operators, meanwhile, are exposed to spot prices (the going rate for fuel bought on the open market today, rather than in advance at locked-in prices). That exposure is brutal when spot prices are running at double what they were in February.
On the other end of the aviation market, private jets continue to operate with minimal friction. In the UK, a private jet passenger within Europe pays roughly £143 in aviation tax, compared to £15 for a commercial traveller. Travel correspondent Simon Calder, speaking on LBC's Don't panic: Why jet fuel shortages won't ground your holiday, argued that a super-tax on private jets - raising the levy to around £1,000 per passenger - could both redirect fuel to commercial routes and generate revenue. At a ratio of nearly 10 to 1 in current tax terms, the private jet market is getting an implicit subsidy during a supply crisis.
There is also the question of what happens in autumn and winter. Summer flights, already booked and broadly confirmed, are largely protected. But carriers are under no obligation to maintain schedules for the lower-demand months. The calculus may shift sharply once peak season ends and airlines reassess which routes to keep running at elevated fuel costs.
What People Are Doing About It
Passengers are adapting in ways that reveal the underlying economics more clearly than any airline press release.
Greece's decision to exempt British passport holders from the EU's new Entry/Exit System biometric checks - the fingerprint and facial recognition process introduced in April 2026 - has made it suddenly more attractive than Spain. The EES, designed to track non-EU nationals entering the Schengen Area, was causing two-to-three hour queues at some border crossings. Greece simply opted out for British travellers, citing congestion at small island airports. According to Travel Weekly, the exemption took effect from April 10, and Greece has since overtaken mainland Spain in UK holiday sales for the past two weeks.
In Asia, the response is subtler. A retired Malaysian entrepreneur interviewed by Al Jazeera described abandoning his usual approach of hunting budget fares and booking directly with full-service carriers - Korean Air and Malaysia Airlines - for August travel, reasoning that their financial strength makes cancellations less likely. That decision costs more upfront, but buys a form of insurance.
In the United States, the demand collapse works differently. Anti-American sentiment stirred by the political climate, combined with genuine uncertainty about entry procedures, has driven European travellers away from U.S. destinations. The result: cheap transatlantic fares and unsold hotel rooms in World Cup host cities. Hotels in Kansas City, set to host matches, are reportedly sitting on unsold inventory with the tournament weeks away.
Meanwhile, U.S. refiners are moving quickly to fill the supply gap. According to CNBC, American producers Valero and Marathon Petroleum have both ramped up jet fuel output - Valero boosted its share of jet fuel to 30% of total distillate production in March, up from a typical 26%. U.S. exports of jet fuel to Europe surged more than 400% in April compared to February. It is profitable for them; it is also genuinely necessary.
The Bottom Line
The jet fuel crisis is not cancelling your summer holiday. It is cancelling the ones that were never very profitable to begin with, and quietly raising the price of everything else. Airlines are not in distress - they are in triage, cutting the routes that the market no longer supports at $200-per-barrel fuel prices and redirecting supply to the routes that do. The deeper structural question is what happens when the hedging contracts run out, the summer season ends, and airlines have to decide which thin routes to restore in a world where jet fuel may stay expensive for months or years. The holiday problem is real. It just has not arrived yet.
Timeline
- Late February 2026 - War breaks out between the U.S.-Israeli coalition and Iran; Iran effectively closes the Strait of Hormuz, disrupting around 20% of global oil trade
- Early March 2026 - Jet fuel prices begin surging, rising from approximately $99 per barrel to over $200 in some markets
- March 2026 - Wizz Air CEO warns of a 50 million euro hit to 2026 net profit; Ryanair's CEO signals possible capacity reductions; SAS cancels 1,000 April flights
- 9 April 2026 - Airports Council International Europe writes to the European Commission warning of a "systemic jet fuel shortage" in the EU unless Hormuz traffic normalises within three weeks
- 10 April 2026 - The EU's Entry/Exit System (EES) biometric border checks go live across 29 Schengen Zone countries, immediately causing queues of up to three hours at some airports
- 17 April 2026 - Greece announces it will exempt British passport holders from EES biometric registration, protecting its UK tourism market
- 22 April 2026 - Lufthansa Group announces 20,000 short-haul cancellations through October, targeting unprofitable routes; projected to save 40,000 metric tonnes of fuel
- April 2026 - Air France-KLM raises fares on long-haul routes by up to 100 euros and short-haul routes by 10 euros per return; Delta Airlines announces an additional $2.5 billion in quarterly fuel costs
- May 2026 - Cirium data shows 13,000 flights axed globally in May, representing around 1.5% of scheduled capacity; U.S. jet fuel exports to Europe surge more than 400% versus February levels
- 6 May 2026 - LBC broadcasts Simon Calder's analysis arguing the crisis is about profitability, not supply collapse, and calling for a super-tax on private jets
Summary
Who: Airlines operating in Europe and Asia, including Lufthansa, SAS, Wizz Air, Ryanair, Air France-KLM and Delta, as well as holiday passengers and fuel producers in the United States and Middle East.
What: A global jet fuel price shock, driven by Iran's closure of the Strait of Hormuz, has prompted airlines to cancel thousands of low-margin flights and raise fares across their remaining networks. The disruption is being presented as a crisis but is, structurally, an efficiency cull of unprofitable routes.
When: The crisis began in late February 2026 with the start of the Iran war. The peak disruption period is May through summer 2026, with risks extending into autumn and winter if fuel prices remain elevated.
Where: The impact is most severe in Europe and Asia, which rely heavily on Gulf-sourced jet fuel. The U.S. is better insulated due to domestic refining capacity but remains interconnected to the global system.
Why: The Strait of Hormuz - through which 20% of global oil trade normally passes - was effectively closed by Iran during the war. This simultaneously cut supply of both crude oil and refined jet fuel to refineries and airports worldwide, causing prices to double and forcing airlines to make rapid decisions about which routes are worth flying.