London Heathrow Airport
Flight Compensation
Heathrow is Europe's busiest two-runway airport. When it delays, the cascade runs all day.
Heathrow operates at over 97% runway capacity — the highest utilisation of any major hub in the world. There is functionally no slack in the schedule. A single delayed arrival in the morning creates a chain reaction that can affect dozens of departures before the day ends. Passengers who accept vague 'ATC' or 'weather' explanations from airlines are frequently leaving valid claims unclaimed. NATS flow control restrictions — the most common cause of LHR delays — are not the same as extraordinary circumstances under UK261.
£520
Max payout (UK261)
97%
Runway capacity utilisation
~800
Daily flights
Max Compensation
£520
per passenger · departing LHR
Average processing: 42 days
Free check · 6 years (England & Wales) limit · No fee unless we win
01We Know LHR
Heathrow handled 79.2 million passengers in 2023, operating from just two runways — the lowest runway-to-passenger ratio of any major global hub. NATS (National Air Traffic Services) issues flow control restrictions at LHR on over 40% of summer operating days, routinely cited by airlines as 'ATC delays.' Eurocontrol CODA data shows LHR generated more en-route ATFM delay minutes than any other UK airport in 2022–23.
Our Success Rate
83%
on LHR-origin claims
Average Payout
£390
per passenger
Peak Disruption Periods
June – August
Mediterranean departure surge, reduced runway alternation windows, NATS summer capacity constraints
December – January
Winter weather (fog, ice), reduced visibility approaches, holiday schedule congestion
Bank Holiday weekends
Schedule peaks with no slack runway capacity; ground handling staffing at minimum
Key Legal Nuance at LHR
What Makes LHR Claims Different
The critical legal nuance at LHR: NATS flow control is not the same as an air traffic control strike. Airlines routinely use 'ATC restrictions' as an extraordinary circumstances defence, but the UK CAA has consistently held that capacity management restrictions imposed by NATS on a systemic, foreseeable basis do not qualify as extraordinary circumstances — they are a known and planned feature of operating at LHR.
02Disruption Causes & Legal Status
What actually causes delays at London Heathrow Airport — and whether each cause is extraordinary under UK261.
NATS Flow Control Restrictions
Not extraordinaryNATS (National Air Traffic Services) issues ATFM (Air Traffic Flow Management) slot restrictions to manage capacity into and out of LHR. These impose ground delays of 30–120+ minutes on individual flights. Airlines universally cite this as 'ATC delay' in their disruption notifications, which many passengers incorrectly interpret as a strike or force majeure event.
NATS flow control is a systemic, foreseeable, and regular feature of operating at LHR. The UK CAA and courts have consistently rejected 'ATC restrictions' as an extraordinary circumstances defence at LHR when the cause is routine capacity management rather than an actual ATC strike or incident. Your claim is very likely valid.
Knock-on / Rotational Delays
Not extraordinaryBecause LHR runs at 97% capacity, a delay on an aircraft's previous rotation (inbound flight was late) cascades directly into your departure delay. Airlines frequently cite the incoming aircraft's delay as caused by 'ATC' or 'weather at origin' — even when neither genuinely applies.
Rotational delays are explicitly NOT extraordinary under Wallentin-Hermann (C-549/07). Airlines are responsible for managing their own fleet schedules. The fact that the delay originated from a previous flight does not transfer responsibility away from the airline. This is one of the most commonly mis-claimed 'extraordinary' causes at LHR.
Ground Handling Disruptions
Not extraordinaryHeathrow's ground handlers — Swissport, Menzies Aviation, and dnata — have faced multiple periods of industrial action and staffing crises. The post-COVID summer 2022 crisis (April–August 2022) led to Heathrow imposing a passenger cap of 100,000/day. Airlines cancelled thousands of flights during this period, citing 'airport capacity' restrictions.
Ground handling disruptions caused by the airline's contracted handler are not extraordinary. The 2022 staffing crisis was foreseeable from as early as February 2022. Airlines who cancelled flights during this period citing 'airport restrictions' face valid claims under UK261 — Heathrow's capacity cap did not remove the individual airline's obligation to passengers.
Fog and Low Visibility Operations (LVO)
May be extraordinaryLHR has one of the highest frequencies of Low Visibility Operations (LVO) of any major European airport due to its location in the Thames Valley. During LVO, landing rates drop from 44 per hour to approximately 28 per hour, causing cascading delays across the morning and early afternoon schedule.
Genuine, severe, and unforeseeable fog events may qualify as extraordinary circumstances — but airlines must demonstrate the fog specifically caused your flight's delay and that all reasonable measures were taken. Persistent LVO at LHR during autumn/winter is well-known and often foreseeable; generic 'weather' claims without a specific severe weather event are challengeable.
Technical Faults (Aircraft AOG)
Not extraordinaryAircraft-on-ground (AOG) technical issues are common across all LHR operators. BA, Virgin, and connecting airlines operating complex long-haul routes have comparatively higher AOG rates due to the age and mix of fleet types operated through the hub.
Technical faults are almost never extraordinary under UK261. The standard (Wallentin-Hermann) requires the airline to prove the fault was caused by a hidden manufacturing defect with no preventive measure possible. Routine maintenance issues, component failures, and unscheduled technical inspections do not meet this bar.
03Highest-Disruption Routes
Routes departing LHR with the highest documented delay rates. Based on Eurocontrol CODA data and FlightStats.
| Route | Airline(s) | Delay Pattern |
|---|---|---|
| LHR → DXB | British Airways / Emirates | 14% delay rate — connecting hub pressure, ATC flow |
| LHR → JFK | British Airways / Virgin Atlantic | 11% delay rate — slot congestion, rotational delays |
| LHR → EDI (shuttle) | British Airways | High frequency, 18% delay rate — turnaround pressure |
| LHR → MAD | British Airways / Iberia | 10% delay rate — morning bank pressure |
| LHR → FCO | British Airways / ITA Airways | 9% delay rate — afternoon NATS restrictions |
| LHR → AMS | British Airways / KLM | 12% delay rate — bilateral ATC coordination delays |
04How We Handle LHR Claims
You submit your flight details
Takes 2 minutes. We need your flight number, travel date, and what happened. No paperwork required upfront.
We verify the LHR-specific cause
We immediately cross-reference your LHR departure against NATS ATFM data, Eurocontrol delay logs, and the airline's fleet rotation records for the day of your flight. This lets us distinguish a genuine ATC strike or weather event from a routine NATS flow restriction or rotational delay — the difference between a valid claim and an invalid extraordinary circumstances defence. We then submit directly to the airline's legal team (not their consumer portal) with the ATFM slot data attached.
Submission, escalation, and payment
Airlines operating from LHR typically process approved claims within 3–7 business days. If the claim is disputed using an ATC or weather defence, we escalate to the UK CAA's ADR scheme — LHR-origin claims have strong precedent in passengers' favour.
05UK261 at London Heathrow Airport
Regulation covering departures from LHR
All flights departing from London Heathrow (LHR) are covered by UK Regulation 261/2014 (UK261), regardless of the airline's nationality or your destination. This means: British Airways, American Airlines, Emirates, Lufthansa, Air France — all carriers departing LHR owe UK261 protections. The maximum compensation is £220 (short-haul under 1,500km), £350 (medium-haul 1,500–3,500km), and £520 (long-haul over 3,500km), for delays of 3hr+ at your final destination.
06Frequently Asked Questions
Real questions from passengers who flew from LHR.
My LHR flight was delayed and the airline said it was 'ATC restrictions' — can I still claim?
Very likely yes. 'ATC restrictions' at LHR almost always refers to NATS flow control — routine capacity management, not a strike or genuine emergency. The UK CAA has repeatedly held that foreseeable NATS flow restrictions are not extraordinary circumstances. We cross-reference NATS ATFM records to confirm the cause before submitting your claim.
My Heathrow flight was cancelled in summer 2022 due to 'airport capacity' — am I owed compensation?
Almost certainly yes. Heathrow's 2022 capacity cap was a known and foreseeable event by February–March 2022, months before most cancellations occurred. Airlines who cancelled flights citing 'airport restrictions' cannot rely on this as extraordinary circumstances when the situation was clearly foreseeable and, in many cases, their own operational decisions contributed to it.
The airline said my LHR delay was caused by weather — but it was a sunny day at Heathrow. What now?
Airlines sometimes cite 'weather at origin' or 'weather at destination' for a connecting aircraft rather than conditions at LHR itself. We verify actual weather conditions against Met Office and Eurocontrol data for your specific flight date. If the airline cannot produce evidence of a genuine exceptional weather event, the extraordinary circumstances defence fails.
Which airlines operate from LHR and are all of them covered by UK261?
Yes — all airlines, regardless of nationality, are bound by UK261 for departures from LHR. This includes British Airways, American Airlines, Emirates, Qatar Airways, Lufthansa, Air France, KLM, United, Delta, Virgin Atlantic, and all others operating from LHR. The regulation applies to the departure airport, not the airline's country of registration.
How far back can I claim for an LHR flight disruption?
UK261 claims from LHR have a 6-year statute of limitations in England and Wales. If your disruption occurred within the last 6 years and meets the eligibility criteria, your claim is still live.