What Are 'Extraordinary Circumstances' in Flight Compensation?

Airlines love two words: extraordinary circumstances. Say them to a passenger and suddenly that €600 compensation they were hoping for vanishes into thin air.

But here's the thing: airlines routinely abuse this exemption. They label routine technical issues as "extraordinary" and hope you won't question it.

This guide separates myth from reality. We'll cover:

• What legally counts as extraordinary circumstances
• What absolutely does NOT qualify
• How airlines manipulate the definition
• What to do if your claim gets rejected

What EU Law Actually Says

Regulation EC 261/2004 states that airlines don't have to pay compensation when the delay or cancellation is caused by "extraordinary circumstances which could not have been avoided even if all reasonable measures had been taken."

The key phrase: "could not have been avoided even if all reasonable measures had been taken."

This sets a high bar. The airline must prove:

1. The cause was genuinely outside their control
2. No reasonable action could have prevented or mitigated it
3. They took all possible steps to minimise disruption

What Definitely Counts as Extraordinary (Valid Airline Excuses)

Severe Weather

• Heavy snow or fog that closes airports
• Volcanic ash clouds (remember 2010?)
• Extreme storms making takeoff unsafe

But note: Light rain, normal wind, or seasonal weather patterns don't qualify. Airlines can't cancel summer flights to Faro because it's "too hot."

Air Traffic Control Strikes

When ATC staff walk out, that's beyond airline control. The same applies to general aviation strikes affecting airport operations.

Important: Airline staff strikes DON'T count as extraordinary. Crew strikes are the airline's responsibility.

Political Instability and Security

• Terrorist threats
• Political unrest closing airspace
• War or armed conflict
• Airport closures ordered by authorities

Medical Emergencies

A passenger emergency requiring diversion is typically valid — though airlines must still try to minimise delay to other passengers.

What Does NOT Qualify (Airline Spin)

Here's where airlines get creative with excuses:

Technical Problems

This is the big one. The European Court of Justice ruled in Wallentin-Hermann v Alitalia that routine technical issues are not extraordinary circumstances.

Only hidden manufacturing defects or sabotage might qualify. Everything else — engine trouble, landing gear issues, hydraulic failures — is the airline's responsibility.

Crew Shortages

If the airline doesn't have enough pilots or cabin crew, that's their operational failure. Not extraordinary.

Aircraft Shortages

If your plane wasn't available because another flight ran late, that's a knock-on effect of poor planning. Not an excuse.

Routine Maintenance

Scheduled maintenance overruns don't qualify. Airlines know maintenance schedules. They should build in buffers.

Bird Strikes

Here's a tricky one. Small bird strikes during takeoff are considered routine operational hazards. Multiple bird strikes or unusual circumstances might qualify — but airlines often claim bird strikes to reject valid claims.

How Airlines Manipulate the Definition

Airlines know most passengers won't challenge a rejection letter. Common tactics include:

Vague language: "Operational issues" or "technical difficulties" without specifics.

Blaming weather: Claiming weather made a technical problem worse — when the weather was actually fine.

Citing ATC when it was their fault: Minor air traffic delays that shouldn't have caused hours of delay.

Knock-on effect claims: Saying delay was caused by a previous flight's extraordinary circumstances, when that flight had different issues.

What to Do If Your Claim Gets Rejected

Step 1: Demand Specifics

Write back asking for:

• The exact nature of the extraordinary circumstances
• When they were first known
• What measures were taken to avoid the delay
• Supporting documentation (weather reports, ATC logs, etc.)

Airlines must provide evidence under GDPR if you request it.

Step 2: Check the Weather History

Look up historical weather data for your flight date. Was the weather actually bad? Meteoblue has historical weather by hour and location.

Step 3: Check Flight Data

Use FlightAware or Flightradar24 to see if other planes were flying the same route. If competitor airlines operated normally, the circumstances weren't that extraordinary.

Step 4: Escalate

• Submit to Alternative Dispute Resolution (ADR)
• Contact your national aviation authority
• Consider small claims court

Real-World Examples

Case: Jones v. Ryanair

A passenger's flight was delayed due to a "technical fault." Ryanair rejected the claim citing extraordinary circumstances.

The passenger challenged and won. The court found the technical fault was routine maintenance-related, not a hidden manufacturing defect.

Compensation awarded: €400

Case: KLM Weather Excuse

KLM cancelled a flight citing "severe weather in Amsterdam."

Passengers checked Flightradar24 and found 40 other flights landed at Schiphol in the same hour. Weather wasn't the issue — crew availability was.

ADR ruled in passengers' favour. €250 each.

The Bottom Line

Extraordinary circumstances exist, but they're rarer than airlines claim. When you hear those words:

1. Ask for evidence
2. Verify independently
3. Don't accept vague excuses
4. Challenge rejections through proper channels

Remember: the burden of proof is on the airline, not you.

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Or read more about your rights under EU law.

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Deep dive: What airlines must prove — extraordinary circumstances evidence guide · EC261 court rulings and case law · Extraordinary circumstances guide (full)

Frequently Asked Questions

What are "extraordinary circumstances" under EC261?

Extraordinary circumstances are events that are: (1) outside the airline's control, (2) not inherent to the normal exercise of aviation, and (3) impossible to avoid even if all reasonable measures had been taken. The European Court of Justice has defined these criteria through multiple landmark rulings. The threshold is deliberately high — most flight disruptions do NOT qualify.

Are all weather delays considered extraordinary circumstances?

No. Severe, unforeseeable weather events (e.g., a sudden extreme storm not in any forecast) can qualify. But routine weather that airlines should plan for — light turbulence, standard winter frost, forecasted rain — does not. Airlines that cite "weather" without specifying the extraordinary nature of the conditions are often using an invalid defence.

Are technical faults on aircraft extraordinary circumstances?

Almost never. The ECJ ruled definitively in Wallentin-Hermann v Alitalia (2008) that technical problems are inherent to normal airline operations. Only a sudden hidden defect identified by the aircraft manufacturer without prior warning, and specific to the aircraft involved, might qualify. Standard maintenance issues, aging fleet problems, or recurring technical faults are definitively not extraordinary circumstances.

Are bird strikes extraordinary circumstances?

Bird strikes are generally considered extraordinary circumstances — they are inherently unpredictable, occur in-flight, and are outside the airline's control. However, the airline must still show it took all reasonable steps to minimise the delay's impact (e.g., attempted to secure replacement aircraft).

Are crew shortages extraordinary circumstances?

No. Courts across the EU have consistently ruled that crew availability is entirely within the airline's operational responsibility. Insufficient crew reserves, crew exceeding duty time limits, or crew illness (in most cases) are operational challenges the airline must manage. They cannot be used as extraordinary circumstances defences.

What happens if the airline can't prove extraordinary circumstances?

The burden of proof is on the airline. If they cannot provide specific documentation demonstrating the extraordinary event, when it occurred, and what measures they took to minimise its impact, their extraordinary circumstances defence fails — and they owe you the full EC261 compensation. File your claim here if you've received a vague rejection.

How do I find out what really caused my flight delay?

Request the specific cause from the airline in writing. Cross-reference with: Flightradar24 for aircraft movement data, Eurocontrol's Network Manager for ATC information, weather archives for meteorological conditions, and airport authority reports. Services like FlightOwed perform this evidence gathering as part of the claims process.