EU261 Extraordinary Circumstances: When Can Airlines Legally Refuse to Pay?
Last updated: July 2026 · 8 min read
Your EU261 claim was rejected. The airline cited "extraordinary circumstances." Now what? This is the most common way airlines avoid paying — and courts overturn it constantly. Here is exactly what qualifies, what courts have ruled, and how to challenge a rejection.
Quick summary
- ✓ Qualifies: genuine severe weather, ATC strikes, security threats, hidden manufacturing defects, volcanic ash
- ✗ Does NOT qualify: routine technical faults, crew shortages, late incoming aircraft, airline strikes, overbooking
- ⚖️ Airlines must also prove they took all reasonable measures to avoid the delay — even if a genuine event occurred
What the law actually says
EU Regulation 261/2004, Article 5(3) states that an airline is exempt from paying compensation if the cancellation or delay was caused by "extraordinary circumstances which could not have been avoided even if all reasonable measures had been taken."
The key phrase is both parts: the circumstance must be (1) extraordinary AND (2) unavoidable even with all reasonable measures. Airlines routinely ignore the second condition.
What courts have ruled qualifies
Genuine severe weather
Heavy fog, extreme snowstorms, lightning strikes, or conditions that close an airport or make it unsafe to fly. Note: normal rain, light turbulence, or seasonal fog do not qualify. The weather must be genuinely exceptional for the location and time of year.
Air traffic control (ATC) strikes
ATC strikes are outside airline control. However, the European Court of Justice (ECJ) has ruled that strikes by an airline's own staff — pilots, cabin crew, ground staff — are NOT extraordinary circumstances even if they are legally protected strikes (Krüsemann v TUIfly, C-195/17, 2018).
Hidden manufacturing defects
A manufacturing flaw that could not reasonably have been detected during normal maintenance — for example, a defect identified by the manufacturer after delivery. Routine wear-and-tear discovered during standard checks does not qualify (Wallentin-Hermann v Alitalia, C-549/07, 2008).
Security threats
A genuine, credible security threat that forces cancellation — bomb threats, airport lockdowns, or government-imposed no-fly orders. The threat must be real and documented, not a general precaution.
Volcanic ash / extraordinary natural events
The Eyjafjallajokull eruption (2010) is the classic example — airspace closure by governments qualifies. But airlines still had to offer rerouting and care obligations; they just did not have to pay fixed compensation.
What does NOT qualify (despite what airlines claim)
Routine technical faults
The landmark ECJ ruling in Wallentin-Hermann v Alitalia (2008) established that technical problems are inherent in normal airline operations and are therefore not extraordinary. This covers: engine issues, hydraulic leaks, faulty instruments, computer errors, and most mechanical failures. Airlines still try to use "technical fault" as an excuse — courts repeatedly reject it.
Crew shortages and scheduling problems
Running out of legally required crew rest hours, crew sickness that could be covered by standby crew, or scheduling errors are all within the airline's control. The airline is responsible for maintaining adequate staffing.
Late incoming aircraft ("rotational delay")
If the plane was late arriving from a previous flight, that delay is generally the airline's responsibility. The original cause of the delay chain matters — if it started with a technical fault or scheduling issue, extraordinary circumstances cannot be claimed downstream.
Overbooking / denied boarding
Overbooking is a deliberate commercial decision. It is never an extraordinary circumstance. The full compensation amount applies, with no exceptions.
Airline strikes (own staff)
The ECJ ruled in 2018 (Krüsemann) that a "wildcat" strike by Ryanair pilots was not an extraordinary circumstance — it was within the airline's control. This applies to any strike by the airline's own employees.
The "all reasonable measures" test
Even if a genuine extraordinary circumstance existed, the airline must prove it took all reasonable measures to avoid the delay. This is a strict standard. For example:
- — If bad weather was forecast days in advance and the airline failed to make contingency arrangements, the "all reasonable measures" test may fail
- — If the airline could have used a replacement aircraft but did not, the defence fails
- — If the airline had sufficient time to reroute passengers but chose not to, courts can reject the extraordinary circumstances claim
What to do if your EU261 claim is rejected
Ask for written documentation
Request the specific reason for rejection in writing, including the exact technical report or meteorological data they are relying on. Airlines are often vague — forcing them to be specific helps your case.
Escalate to the National Enforcement Body (NEB)
Each EU country has an NEB. UK: Civil Aviation Authority (CAA). France: DGAC. Germany: Luftfahrt-Bundesamt. These bodies can investigate and pressure airlines. File a complaint — it is free.
Use Alternative Dispute Resolution (ADR)
UK: CEDR or ADRGROUP are free for passengers. EU: national ADR bodies. Most resolve within 90 days. Airlines are required to participate. This is often faster than court and has a good track record for passengers.
Use a claims management service
AirHelp, ClaimCompass, and others work on a no-win, no-fee basis (~25–35% commission). They know which extraordinary circumstances defences hold up in court and which do not — they will not take your case if it is unlikely to succeed, but they are very experienced at overturning bad rejections.
Small claims court
In the UK, MCOL (Money Claim Online) costs £25–£115 and many passengers win. EU: European Small Claims Procedure. Airlines often settle before a hearing because court costs and reputational risk outweigh the compensation amount.
Find old flight claims automatically
SubRadar scans your Gmail or Outlook for airline booking emails and flags flights that may qualify for EU261 compensation — including ones you may have forgotten about within the 6-year UK window.
Scan my flight emails freeLet AirHelp fight the rejection for you
AirHelp specialises in challenging rejected EU261 claims, including extraordinary circumstances defences. No win, no fee — they only charge if they succeed.
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