LONDON — Airlines, tour operators, and aviation authorities are warning that a tightening global supply of jet fuel could disrupt summer travel plans for millions of passengers this season, with industry analysts projecting potential capacity cuts and ticket price surges at major European and North American airports if supply chain shortfalls are not meaningfully addressed in the coming weeks. The alert comes as the northern hemisphere enters what is typically the peak demand period for aviation fuel, and as inventories at several high-traffic leisure destinations have already dropped below industry safety thresholds.
The supply squeeze has been driven by a combination of refinery maintenance backlogs, geopolitical disruptions to crude oil shipping routes, and an unexpected acceleration in demand recovery across long-haul Asian markets, which have collectively compressed the inventory cushion that airlines and airport fuel handlers rely on to absorb seasonal demand variation. Unlike disruptions in previous years, which were typically localized or short-lived, analysts say the current situation involves multiple overlapping factors that are proving difficult to resolve quickly.
According to the International Aviation Fuel Association, commercial inventories of jet fuel at the 30 largest European airports fell to 18 days of forward cover in late April, compared with a seasonal average of 26 days over the previous five years. At seven of those airports, including major leisure hubs in southern Europe that serve as gateways to popular Mediterranean summer destinations, inventory levels dropped below 14 days — the threshold the industry considers a watch level that triggers formal contingency planning among carriers and ground handlers.
“The threat to summer holidays looming from jet fuel shortages is real and should not be dismissed as a theoretical risk,” said Antoine Lemaire, head of fuel operations at a European airline consortium representing 14 carriers across the continent. “We are not at a crisis point yet, but the margin is thinning faster than it normally does at this time of year, and if we see a further demand spike or additional refinery disruptions in the next four to six weeks, airlines will face some very difficult choices about which routes and frequencies they can sustain.”
Refineries in several key producing regions are operating below normal capacity following an unusually dense schedule of maintenance shutdowns that were deferred during lower-demand periods and are now being carried out concurrently. Industry sources said that refining capacity for middle distillates — the product category that includes jet fuel along with diesel and heating oil — was running roughly 8 percent below its five-year seasonal average across the Atlantic basin. That gap would ordinarily be manageable, but becomes acute when demand is simultaneously elevated by a strong travel booking season and when alternative supply sources face their own logistical constraints.
Shipping disruptions have added compounding pressure. Rerouting of tanker traffic around several contested maritime corridors has extended average delivery times for crude oil to European refineries by an estimated four to six days, according to the logistics consultancy MareStar Analytics. The longer transit times have reduced effective throughput and are already pushing spot prices for jet fuel higher. MareStar estimated that jet fuel spot prices at northwest European hubs were running 14 percent above their five-year seasonal average as of the first week of May, with further upward pressure expected if inventory drawdown continues at its current rate through the month.
Passenger advocates and consumer protection groups are urging travelers to monitor their bookings carefully and to purchase travel insurance that explicitly covers cancellation and significant delay due to operational disruptions. Several travel industry bodies said they had received an uptick in inquiries from tour operators seeking clarity on their legal obligations under package holiday regulations if flights were reduced, re-timed, or rerouted due to fuel availability constraints at origin or destination airports.
Airlines contacted for this report said they were actively managing their fuel procurement through hedging contracts, pre-positioning agreements with alternative suppliers, and in some cases operational adjustments including mild reductions in cruising speed to improve fuel efficiency. Most carriers insisted they did not anticipate significant passenger-facing disruptions if conditions did not worsen materially. However, several acknowledged that their hedging positions were structured around price scenarios that assumed a more comfortable supply environment than currently exists, meaning unexpected cost increases could affect profitability and, in some cases, drive upward pressure on ancillary charges and dynamic fare pricing.
Airport operators in the Mediterranean region, which accounts for a disproportionate share of European leisure travel in July and August, said they were coordinating closely with fuel suppliers to prioritize inventory replenishment at their highest-traffic terminals. Industry analysts said the next four to five weeks would be critical in determining whether supply chains could be adequately rebalanced before the peak summer travel window fully opened in late June.