Will there be a UK fuel shortage in 2026?

As of early June 2026, the UK is not experiencing widespread retail fuel shortages — petrol and diesel remain available at the pump across the country. The bigger near-term question is jet fuel: UK aggregate jet-fuel days-of-cover drifted down from roughly 32 days at the start of March to about 24 days by early June, then stabilized near 25 days by June 15 as jet prices fell ~11% week-on-week and the US-Iran interim deal was reached — holding just above the IEA's 23-day threshold that Goldman Sachs flagged on May 6 as the trigger for physical airport shortages. With a deal reached, the base case is that workaround supply (imports from North America and Africa, the DfT Jet A rule relaxation, hedging, pre-cut capacity) keeps cover above the threshold and rebuilds it through the autumn. Three scenarios bracket the year-end outcome.

Will UK flights be cancelled in summer 2026?

Through May, the UK Department for Transport's analysis of OAG schedules confirmed that only about 1,200 UK departures were cancelled May 3 to June 14 — less than 1% of planned flights, contradicting the more alarmist Cirium-driven headlines about imminent network collapse. Heathrow has seen the largest absolute impact (846 May cancellations affecting 151,198 seats per Cirium); Lufthansa's 20,000 cancellations through October stand. But major carriers (Lufthansa, KLM, Ryanair, British Airways) have publicly told markets they expect stable summer supply via North American and African imports plus hedging. Cancellation outcomes for the rest of 2026 range from a network-holds case (1.5–2% summer cancellations) to a broader-crack case (10–15%) depending on whether the jet-fuel threshold is breached and whether the Hormuz closure extends.

What is the IEA 23-day jet fuel threshold?

The 23-day threshold is the level of inventory days-of-cover that the International Energy Agency identifies as the operational trigger for physical airport jet-fuel shortages — below 23 days, refuelling reliability degrades and NOTAMs (notices to airmen) typically follow. Airports Council International (ACI) Europe formally invoked the threshold in its April 9 letter to EU Transport Commissioner Apostolos Tzitzikostas, warning that more than 100 EU airports faced systemic jet fuel shortage if the Strait of Hormuz did not reopen within three weeks, with many hubs already at 8–10 days of stock. Goldman Sachs's May 6 projection then identified the UK as the European market most at risk of breaching the threshold in June 2026, primarily because UK aviation is heavily import-dependent for refined product.

Is petrol rationed in the UK right now?

No. As of early June 2026 the UK is not formally rationing retail petrol or diesel. The UK Transport Secretary Heidi Alexander has publicly stated there are 'no immediate supply issues' but that the government is 'preparing now to give families long-term certainty and avoid unnecessary disruption at the departure gate this summer.' The principal measure to date is the May 2 Department for Transport slot-rule consultation covering Heathrow, Gatwick, Stansted, Manchester, Luton, London City, Birmingham and Bristol — which lets airlines hand back or consolidate summer flights without losing next-season slots. That is a flexibility mechanism, not a rationing decree.

What does "UK Day +N" refer to?

Day +N is GEF's counter for days past the May 4, 2026 'cliff edge' that Ryanair CEO Michael O'Leary publicly identified as the point at which UK jet-fuel reserves would begin to bite operationally. As of June 23, 2026, the UK is at Day +50 past that cliff — and the operational reality so far has been milder than O'Leary's framing suggested: less than 1% of planned UK departures have been cancelled, the four major London airports (LHR/LGW/STN/LTN) have issued no fuel NOTAMs, and major carriers are publicly committing to stable summer supply. The US-Iran deal signed June 17 and the Hormuz de-confliction channel operationalised June 23 (Bürgenstock talks concluded) have firmed the network-holds base case further. Jet supply is tracking above the IEA threshold. The Day +N counter tracks how long the post-cliff workaround has held — the longer it holds, the more credible the base case becomes.

Shortages United Kingdom 2026 Forecast

UK Jet Fuel & Road Fuel — 2026 Three-Scenario Forecast

UK jet-fuel days-of-cover from March through year-end vs. the IEA 23-day operational threshold, re-weighted after the US-Iran interim deal: network-holds is now the base case, with the Goldman threshold-breach projection and a broader retail crack as lower-probability paths.

Forecast Refreshed June 23, 2026

UK live status Airports Travel guidance Timeline 2026 Forecast

UK jet-fuel days-of-cover in 2026: observed to June 23, plus three forecasts to year-end

Y-axis is days of jet-fuel inventory cover at UK aggregate level. The 23-day line is the IEA's operational threshold — below it, refuelling reliability degrades and physical airport shortages start; above it, the system can absorb demand spikes. Solid line is observed March–June 23; dashed lines are three modelled scenarios for Jun–Dec, re-weighted after the US-Iran deal (signed Jun 17, physical reopening began Jun 18) — network-holds is now the base case (~62%), with threshold-breach (~25%) and broader-retail-crack (~13%) as lower-probability paths. The Goldman "below-23-day" projection was explicitly conditioned on Hormuz NOT reopening; with the deal signed, the strait reopening, and jet prices easing (IATA $141/bbl, down from $181 peak), that breach drops further toward a low-probability contingency.

One data point = the estimated UK aggregate jet-fuel inventory expressed as days of forward demand cover, drawing on IATA Jet Fuel Monitor (weekly), ACI Europe stock estimates, DfT operational reporting, and Cirium flight-schedule data. Individual airports vary widely; major hubs (LHR, LGW, MAN) sit modestly above the aggregate, secondary fields modestly below.

Where each metric lands by December 31, 2026

Today (Jun 23) — observed

~25 days

UK aggregate jet-fuel cover holding above the IEA 23-day threshold. UK Day +50 past Ryanair's May 4 cliff edge — no NOTAM at any UK airport. IATA jet $141/bbl (Jun 1 print), down from $181 late-April peak; Brent $78.2 (Mon Jun 22 settle, −3.0%); war premium nearly fully unwound. DfT confirms <1% of UK departures cancelled; carriers report stable summer supply.

Scenario 1 — Network holds

24–30 days

BASE CASE (~62%). The deal reopens the strait over the summer; workarounds (North America/Africa imports, the DfT Jet A rule relaxation, hedging, pre-cut capacity) bridge the gap. Cover holds near 24 days through midsummer then rebuilds to ~30 days by December. Summer cancellations stay 1.5–2% — in line with the current trajectory.

Scenario 2 — Threshold breach

17–24 days

~25%. The deal stalls and reopening slips, so Goldman's May 6 breach projection partly materializes. UK aggregate dips below 23 days, troughs near ~17 days end-Aug. NOTAMs at 1–2 secondary airports; cancellations 4–7%. Slot-rule exemptions widely used.

Scenario 3 — Broader retail crack

10–16 days

LOW-PROBABILITY TAIL (~13%). The interim deal collapses, the strait stays shut, Russia pre-empts the EU bans. Jet inventory troughs at ~10 days end-Sep (matches ACI's Apr 9 hub-level warning). Cancellations 10–15%, road-fuel availability slips toward ~78% by Q4 — petrol stations begin reporting shortages.

Background reference

5-yr norm: 35 days
IEA threshold: 23 days

5-yr seasonal norm for UK jet-fuel cover sits around 35 days. The IEA 23-day threshold is the operational trigger for physical airport shortages (per ACI Europe's Apr 9 letter to the EU Transport Commissioner).

Goldman May 6 projection

UK most at risk
of June threshold breach

Goldman Sachs identified the UK as the European market most exposed to a June breach of the IEA threshold, primarily because UK aviation is heavily import-dependent for refined product. Whether the projection materializes is the question Scenario 2 answers.

MarAprMayJunJulAugSepOctNovDec

Jet-fuel days-of-cover — observed

Scenario 1: Network holds

Scenario 2: Threshold breach (Goldman May 6 projection)

Scenario 3: Broader retail crack

Forecast model · GEF supply-chain analysis · observed Mar–Jun from IATA Jet Fuel Monitor, ACI Europe estimates, DfT operational reporting, Cirium flight data · scenarios are illustrative, not guarantees · model built around the Goldman Sachs May 6 EU jet-fuel inventory projection and refreshed June 3 after the US-Iran kinetic exchange global-energy-flow.com · June 23, 2026

Reading the chart. The solid blue line is the observed UK aggregate jet-fuel days-of-cover from March 1 — when the Strait of Hormuz closure first began propagating through European refining margins — through today. Cover has drifted from roughly 32 days at the start of March to about 24 days by June 3, hovering just above the IEA's 23-day operational threshold (the red horizontal line). The three dashed paths bracket what happens between now and year-end: green if the workarounds that have held so far continue holding (Scenario 1), amber if Goldman Sachs's May 6 projection of a UK threshold breach materializes during the August demand peak (Scenario 2), or red if the underlying Hormuz crisis extends and aviation stress spreads to retail road fuel (Scenario 3). The "today" line marks where the modelled paths begin diverging from the observed line.

Scenario 1Network holds — the base case (~62%) now that a deal has been reached. The DfT's analysis of OAG schedules confirmed only about 1,200 UK departures cancelled May 3 to June 14 — less than 1% of planned flights and a small fraction of the more alarmist Cirium-driven coverage. Major carriers (Lufthansa, KLM, Ryanair, British Airways) have separately told markets they expect stable summer supply via North American and African imports plus hedging; Lufthansa's 20,000 cancellations through October are already announced and absorb the demand bulge they were intended to. Easyjet reported 70% summer-2026 hedged at Wego May 5. On this path UK aggregate jet-fuel cover dips into the low 20s through July and early August — touching but not breaching the 23-day threshold — then begins recovering as carrier capacity stays pre-cut and import flows from non-Gulf sources continue. By December, cover rebuilds to about 30 days as the strait reopens and imports normalize (still below the 5-year norm of 35 days). Summer cancellations sit at 1.5–2%, broadly in line with the current trajectory. This is the path the operational data and the deal now support.

Scenario 2Threshold breach — if the deal stalls and Goldman's May 6 projection partly materializes (~25%). Goldman Sachs identified the UK as the European market most exposed to a June breach of the IEA 23-day threshold, primarily because UK aviation depends heavily on imported refined product (Britain refines a smaller share of its own jet fuel than France or Germany). On this path, the August demand peak — IEA's Birol has noted August jet-fuel demand runs roughly 40% above March — overwhelms the workaround supply chain. Aggregate cover dips below 23 days from mid-June, troughs at about 17 days at the end of August (still well above the 8–10 day hub-level worst-case ACI Europe warned about in April), and recovers to 24 days by December. NOTAMs are issued at one or two secondary airports during the trough; the DfT's slot-rule consultation is invoked in earnest; cancellations climb to 4–7% of scheduled departures. Road fuel availability is largely unaffected — this is a jet-specific scenario.

Scenario 3Broader retail crack — the low-probability tail (~13%) if the deal collapses. The interim agreement breaks down, Iran extends closure to Bab el-Mandeb, removing the Red Sea workaround that has been quietly underwriting European refining throughput; Russia pre-empts the EU's June 17 ban by redirecting volumes to Asia. UK jet-fuel cover degrades faster than in Scenario 2 — troughs at about 10 days at the end of September, approaching the hub-level reality ACI Europe described in its April 9 letter to the EU Transport Commissioner ("many hubs at 8–10 days stock"). Cancellations climb to 10–15% of scheduled departures; multiple airports issue NOTAMs; the slot-rule consultation tightens into a coordinated cull. Crucially, the same conditions that crack aviation also reach retail: with refining throughput cut and Russian product withdrawn, UK petrol and diesel availability slips to about 78% of normal by Q4, and the first reports of intermittent station outages begin appearing (UK government activates fuel-priority guidance similar to the September 2021 contingency framework). By December, jet cover recovers only to about 16 days — still in physical-shortage territory.

UK factorWhy the UK is different from the EU forecast. The EU forecast on this site tracks aggregate petrol and diesel availability as a percentage of normal supply — appropriate because the EU's stress is currently broad and road-fuel-led (Slovenia rationing, Hungary price cap, PCK Schwedt feedstock cut). The UK's stress is narrower and aviation-led. UK retail road fuel has held throughout the crisis — Transport Secretary Heidi Alexander has said publicly there are "no immediate supply issues" — but the UK aviation system is the European market analysts have flagged as most likely to break first. The chart shape and the scenarios are therefore different: the IEA's 23-day jet-fuel threshold is the central reference, the bracketing question is whether it breaches this summer, and the road-fuel dimension only becomes relevant in the worst scenario. UK Day +N — the count of days past Ryanair CEO Michael O'Leary's May 4 cliff edge — is the operational counter on the parent page; as of today (Jun 23, 2026) it stands at Day +50. The longer Day +N grows without operational breach, the more credibility the network-holds base case accumulates.

MethodThis is a scenario forecast, not a prediction. The observed Mar–Jun line is built from IATA Jet Fuel Monitor weekly prints, ACI Europe stock estimates, DfT operational reporting of schedule cancellations, and Cirium airport-level cancellation data. The Jun–Dec branches are illustrative model paths, not guarantees; the real outcome will depend on the pace of any US-Iran diplomatic settlement, whether Iran follows through on its Bab el-Mandeb extension threat, whether Russia pre-empts the EU's June 17 short-term pipeline gas ban, August weather (a hot August lifts jet demand further), and refinery uptime in the North Atlantic basin. Built around the Goldman Sachs May 6 jet-fuel inventory projection identifying the UK as the European market most at risk of a June threshold breach, with the operational data through June 3 layered on top. Sources: IEA Oil Market Report (May 2026), IATA Jet Fuel Monitor (weekly, latest Jun 1 at $141.64/bbl global average), ACI Europe letter to EU Transport Commissioner Apr 9, Goldman Sachs May 6 note, UK Department for Transport schedule analysis, Cirium UK cancellations dataset, Transport & Tour World May 12, NewsHub UK aviation coverage, UK government slot-rule consultation May 2. Per-pin detail and the live UK aviation watchlist at global-energy-flow.com/shortages/united-kingdom/.

Related: the US gas-price + SPR forecast tracks AAA pump price alongside the Strategic Petroleum Reserve drawdown (three scenarios $3.75–$6.35); the Australia petrol & diesel forecast tracks the June 30 fuel-excise cliff and the Geelong refinery restart (two scenarios); the EU petrol & diesel availability forecast covers continental Europe with a different metric (% of normal road-fuel supply). See also the live global shortage tracker, the EU gas storage trajectory, and the Strait of Hormuz status page.