Heathrow and Gatwick delays persist after violent storms

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Passengers flying through London’s Heathrow and Gatwick airports are continuing to face major disruption after a band of severe thunderstorms over southeast England triggered hundreds of delays and cancellations on Saturday, with knock-on problems now affecting services into Sunday.

Storm system leaves London’s main hubs struggling to recover

Publicly available flight-tracking data for Saturday 27 June indicates that more than 900 flights were delayed across Heathrow and Gatwick as intense storm cells moved across the London area, forcing controllers to slow both arrivals and departures. Various media outlets report that Heathrow recorded at least 470 delayed flights and Gatwick more than 430, with dozens of services cancelled outright.

The disruption was driven by thunderstorms that developed over southern Britain and the near continent as a hot spell broke down, bringing torrential rain, frequent lightning, gusty winds and pockets of hail. According to published coverage, air traffic flow restrictions were imposed over southeast England and parts of northwestern Europe, sharply reducing the number of aircraft that could safely use the already congested airspace around London.

Reporting from UK and international news organisations describes passengers stuck on parked aircraft for several hours, queues snaking through terminals and late-night arrivals pushed into the early hours. Social media posts shared by local broadcasters include accounts of travellers held on the tarmac at Gatwick for up to four hours before flights were eventually cancelled.

By early Sunday, live departure boards at both airports still showed a mix of delayed and rescheduled services as airlines attempted to reposition aircraft and crews, underlining how a few hours of intense weather can ripple through tightly planned schedules for days.

Capacity cuts, diversions and overnight aircraft dislocation

According to data cited by multiple outlets, the thunderstorm activity prompted temporary air traffic control restrictions at Gatwick and operating limits around Heathrow, leading to extended spacing between aircraft and periods when departures were paused entirely. Aviation-focused publications note that some flights bound for London were diverted to other UK airports to keep traffic moving while lightning and heavy rain passed directly over the capital.

Eurocontrol information referenced in regional reports shows Heathrow and Gatwick listed among Europe’s worst affected airports during the height of the storms, with “heavy” delay classifications linked specifically to convective weather in the London Terminal Manoeuvring Area. This meant that even when conditions began to ease locally, aircraft and crews were often out of position, leaving gaps in Sunday morning timetables.

Commentary from aviation analysts quoted across the weekend explains that once rotations are disrupted, airlines can struggle to restore normal patterns quickly. Aircraft that should have arrived in London on Saturday evening to operate early services on Sunday instead landed late, in some cases after curfew windows, or remained at diversion airports overnight. As a result, certain early departures on 28 June left without their usual aircraft or crew available, contributing to ongoing delays even under clearer skies.

Travel reports indicate that some carriers opted to pre-emptively cancel Sunday services in order to consolidate passengers onto later flights, a strategy often used after major weather events to provide a more reliable, if reduced, schedule.

Passengers face long waits, missed connections and rebooking challenges

Accounts collated from broadcast reports, online forums and social platforms describe passengers experiencing waits of between three and six hours for take-off on Saturday, with a smaller number reporting even longer disruptions as storm cells repeatedly re-formed over southern England. Some travellers described missed long-haul connections and abandoned weekend trips as onward flights departed before their delayed inbound services arrived.

Several travel outlets highlight instances in which short-haul flights to Mediterranean destinations shifted from midday departures to early evening, leaving holidaymakers spending most of the day in departure lounges. One widely shared example from Gatwick shows a leisure flight to Turkey moving from a late-morning slot to an early evening departure after multiple revisions to its scheduled time.

Consumer reports also point to crowded customer-service desks at both Heathrow and Gatwick as passengers sought rebooking options or overnight accommodation. Since thunderstorms are generally treated as extraordinary weather events, guidance from travel specialists notes that airlines are often not required to pay statutory compensation, although they are expected to offer care such as meals, refreshments and hotel rooms when passengers are forced to wait long periods.

Travel advice pieces published in the wake of the disruption suggest that affected passengers should retain all receipts for essential purchases, monitor airline apps closely for rerouting options and check their travel insurance policies for additional coverage where statutory payments do not apply.

Weather pattern remains unsettled over southeast England

Meteorological summaries from the weekend describe a sharp transition from record or near-record heat on Friday to a cooler, unstable air mass over England on Saturday, providing the fuel for intense thunderstorms. The UK Met Office forecast for London and the South East called for early showery rain and storms moving eastwards, with a risk of frequent lightning, strong gusts, torrential downpours and localised hail.

Regional forecasts on Sunday 28 June pointed to a gradual improvement but retained the possibility of further showers and isolated storms across parts of southern and eastern England. Aviation commentators caution that while the most severe phase of the storm system appears to have passed, lingering instability in the atmosphere can still generate pockets of heavy weather capable of slowing air traffic.

Industry observers note that summer convective storms have become an increasing concern for European hubs, which often run at or near maximum capacity during peak holiday periods. When arrivals and departures are already tightly scheduled, even modest reductions in flow rates can quickly translate into long queues of aircraft in the air and on the ground.

Operational planning documents from previous seasons show that both Heathrow and Gatwick factor thunderstorms into their risk assessments, with procedures that include temporarily suspending refuelling, adjusting runway usage and coordinating closely with air navigation providers to manage flows.

Advice for travellers heading to Heathrow or Gatwick

Travel information services covering the disruption are urging passengers due to fly in the coming days to check their flight status repeatedly before setting out, as schedules remain subject to short-notice changes while airlines work through the backlog. Many carriers are allowing affected customers to rebook on alternative dates or routes at no additional fare, subject to availability.

Passenger-rights specialists recommend that travellers departing from UK or EU airports familiarise themselves with relevant regulations on delays and cancellations. While intense thunderstorms are typically classified as extraordinary circumstances, passengers may still be entitled to refunds on cancelled flights, rerouting at the earliest opportunity or a later date of their choosing, and basic care during extended waits.

Travel-planning advice published over the weekend suggests allowing extra time to reach Heathrow or Gatwick, particularly when travelling by rail or road during periods of heavy rain or localised flooding. Those with tight connections or separate tickets, especially involving self-transfers between London airports, are being advised to consider building in additional buffer time or exploring flexible tickets where possible.

With school holidays approaching and demand for air travel already high, analysts expect that Heathrow and Gatwick will remain under pressure in the short term as airlines reposition aircraft and crews, even if the weather over southeast England steadily improves during the week ahead.