Civil Law and Air Carrier Liability in Europe

1. Introduction

Air carrier liability in Europe concerns the legal responsibility of an airline for harm suffered by passengers, baggage owners, cargo interests, and sometimes third parties.

European air-carriage liability is governed by a combination of:

the Montreal Convention 1999;

EU Regulation 261/2004 on passenger compensation and assistance;

Regulation 2027/97, as amended by Regulation 889/2002, concerning air-carrier liability;

EU consumer and procedural law;

national contract and tort/delict law;

special rules concerning dangerous goods, cargo, airport operations and aviation safety.

A major feature of European air-carrier law is that different kinds of loss are governed by different legal regimes. A passenger whose flight is delayed, for example, may have a Regulation 261/2004 compensation claim, while a passenger whose baggage is destroyed may principally rely on the Montreal Convention.

The CJEU has repeatedly emphasised that these regimes must be interpreted in a way that protects passengers while respecting the international framework established by the Montreal Convention. (Infocuria)

2. Meaning of Air Carrier Liability

Air carrier liability means the legal responsibility of an airline for consequences arising from air transportation.

Typical claims include:

death of a passenger;

bodily injury;

flight delay;

flight cancellation;

denied boarding;

destruction of baggage;

loss of baggage;

damaged baggage;

delayed baggage;

cargo loss;

cargo damage;

cargo delay;

failure to provide required assistance;

contractual breach;

damage caused by defective airline services.

The legal basis depends heavily on the type of claim.

3. Main European Legal Framework

A. Montreal Convention 1999

The Montreal Convention creates a largely uniform international system for liability arising from international carriage by air.

Important areas include:

passenger death and bodily injury;

passenger delay;

baggage destruction, loss and damage;

baggage delay;

cargo destruction, loss, damage and delay;

jurisdiction;

limitation periods;

liability limits.

The Convention is particularly important because EU legislation concerning air-carrier liability operates alongside it.

4. EU Regulation 261/2004

Regulation 261/2004 establishes passenger rights concerning:

denied boarding;

cancellation;

long delay;

assistance;

reimbursement or rerouting;

compensation.

A major distinction is that Regulation 261/2004 is principally concerned with standardised passenger rights, whereas the Montreal Convention deals with liability for particular categories of damage.

Therefore:

Compensation under Regulation 261/2004 and damages under the Montreal Convention are not necessarily the same claim.

5. Types of Air Carrier Liability

A. Passenger injury or death

Where a passenger suffers bodily injury or death in an aviation accident, the Montreal Convention becomes particularly important.

Questions include:

Did the accident occur during the carriage?

Was there bodily injury?

Was the airline responsible?

Was there contributory conduct?

What damages are recoverable?

Which liability rules apply?

B. Flight delay

Delay can produce two different types of legal consequence:

Standardised passenger compensation

Under Regulation 261/2004, certain long delays can create a right to compensation.

Individual damages

A passenger may separately have a claim for actual damage under the Montreal Convention where its conditions are satisfied.

The two mechanisms should not simply be treated as identical.

6. Case Law 1 — Sturgeon

Sturgeon and Others v Condor Flugdienst GmbH and Böck and Others v Air France

Joined Cases C-402/07 and C-432/07, CJEU, 19 November 2009

This is one of the foundational European air-passenger-rights cases.

The CJEU held that passengers suffering a sufficiently long delay can, in certain circumstances, be treated similarly to passengers whose flights were cancelled for purposes of the standardised compensation regime.

The important threshold developed through the case law is a three-hour delay at final destination, subject to the extraordinary-circumstances defence.

Importance

The case substantially expanded the practical significance of Regulation 261/2004 for delayed passengers.

Principle

A sufficiently long arrival delay can generate a right to standardised compensation even where the flight technically operated.

7. Case Law 2 — Wallentin-Hermann

Wallentin-Hermann v Alitalia

C-549/07, CJEU, 22 December 2008

This is a leading case on the meaning of “extraordinary circumstances” under Regulation 261/2004.

The dispute concerned technical problems affecting an aircraft.

The CJEU explained that technical problems arising in the normal exercise of an air carrier's activity will not ordinarily constitute extraordinary circumstances merely because they are unexpected.

For the airline to rely on the exemption, the relevant event must satisfy the applicable requirements and must not be inherent in the normal exercise of the carrier's activity.

Importance

Airlines cannot automatically avoid compensation whenever they describe a technical problem as unexpected.

Principle

Unexpected does not automatically mean extraordinary.

8. Case Law 3 — Pešková and Peška

Pešková and Peška v Travel Service

C-315/15, CJEU, 4 May 2017

The case concerned an aircraft's collision with a bird.

The CJEU held that a bird strike can constitute an extraordinary circumstance under Article 5(3) of Regulation 261/2004. (Infocuria)

However, that does not automatically release the carrier from all responsibility.

The carrier must still take reasonable measures to prevent or minimise the resulting cancellation or delay.

The Court also addressed situations where an extraordinary circumstance combines with another cause of delay. The delay attributable to the extraordinary circumstance must be distinguished from other delay-causing factors when determining whether compensation is due. (curia)

Principle

An extraordinary event can excuse standardised compensation only within the limits established by the regulation; the carrier must still take reasonable measures.

9. Case Law 4 — McDonagh

McDonagh v Ryanair Ltd

C-12/11, CJEU, 31 January 2013

This case concerned the consequences of the 2010 Icelandic volcanic eruption and the resulting airspace closures.

The CJEU held that the obligation to provide care and assistance to passengers affected by cancellation is not eliminated merely because the cancellation results from extraordinary circumstances.

The carrier may therefore remain responsible for:

meals;

refreshments;

accommodation where necessary;

communication;

appropriate assistance.

Importance

The case clearly separates:

compensation from care.

An extraordinary circumstance can potentially remove the obligation to pay standard compensation, but it does not necessarily remove the carrier's obligation to provide required assistance.

Principle

Extraordinary circumstances do not automatically eliminate the passenger's right to care.

10. Case Law 5 — Nelson and TUI Travel

Nelson v Deutsche Lufthansa AG and TUI Travel plc v Civil Aviation Authority

Joined Cases C-581/10 and C-629/10, CJEU, 23 October 2012

The CJEU confirmed the validity of the passenger-compensation regime for long delays.

The Court addressed the relationship between Regulation 261/2004 and the Montreal Convention.

Importance

The case demonstrates that the EU standardised compensation regime can coexist with the Montreal Convention.

This is particularly important because:

Regulation 261/2004 does not simply duplicate the Montreal Convention.

The two instruments perform different functions.

Principle

Standardised passenger compensation and individual damages under international carriage law can operate within different legal spheres.

11. Case Law 6 — Walz

Walz v Clickair SA

C-63/09, CJEU, 6 May 2010

This is a leading Montreal Convention baggage-liability case.

The dispute concerned the meaning of “damage” and the liability limitation applicable to baggage under Article 22(2) of the Montreal Convention.

The CJEU interpreted the Convention's baggage-liability limit as covering both material and non-material damage arising from destruction, loss, damage or delay of baggage, within the applicable limit. (Infocuria)

Importance

The decision illustrates the importance of interpreting Montreal Convention concepts autonomously and consistently.

Principle

Baggage liability is subject to the Convention's unified rules and applicable liability limits.

12. Case Law 7 — Emirates

Emirates Airlines v Schenker

C-173/07, CJEU, 10 July 2008

The case concerned the concept of a flight under Regulation 261/2004.

The CJEU treated a flight as an air transport operation performed by an air carrier fixing its itinerary.

The decision is important when determining how Regulation 261/2004 applies to journeys involving different legs or connections.

Principle

The legal characterisation of the journey as a “flight” is important for determining passenger rights.

13. Case Law 8 — United Airlines

United Airlines v Q and Others

C-561/20, CJEU, 7 April 2022

This case concerned a connecting journey involving a non-EU carrier.

Passengers had a single reservation for a journey beginning in the EU and ultimately arriving in the United States, while the relevant operating carrier was United Airlines.

The Court held that passengers could claim compensation under Regulation 261/2004 against the non-EU carrier where that carrier operated the relevant flight on behalf of an EU carrier in the circumstances established by the Court. (Infocuria)

Importance

The case demonstrates that the application of EU passenger-rights law can extend to situations involving:

connecting flights;

non-EU airlines;

codeshare arrangements;

journeys involving third countries.

Principle

The identity and contractual role of the operating carrier must be analysed carefully rather than simply asking whether the airline is an EU company.

14. Case Law 9 — Germanwings

Germanwings GmbH v Ronny Henning

C-501/17, CJEU, 4 September 2014?

The case law concerning Germanwings is important in determining the legally relevant time for calculating arrival delay.

For Regulation 261/2004, the relevant concept is effectively when the aircraft reaches its final destination and passengers are permitted to leave the aircraft.

This prevents airlines from treating the landing time alone as the legally decisive moment where passengers remain unable to disembark.

Principle

Arrival delay is determined by the legally relevant arrival time, not simply the moment of touchdown.

15. Case Law 10 — Finnair

Finnair Oyj v Lassooy

C-22/11, CJEU

Finnair concerned denied boarding and circumstances arising from operational disruption.

The Court emphasised that the passenger-protection regime must be interpreted according to the rights guaranteed by Regulation 261/2004.

The case is useful in understanding the distinction between:

cancellation;

denied boarding;

operational restructuring;

passenger compensation.

Principle

Airline operational decisions cannot automatically remove statutory passenger rights.

16. Montreal Convention Liability Structure

The Convention can be understood through four major categories.

The applicable liability rules, limits and defences differ depending on the category.

17. Passenger Injury Liability

For passenger injury claims, major questions include:

1. Was there an accident?

The concept of accident has received extensive international judicial interpretation.

2. Did it occur during carriage?

The timing and circumstances of the event matter.

3. Was there bodily injury?

The Montreal Convention framework distinguishes bodily injury from purely economic or psychological claims in important ways.

4. What damages resulted?

Potential damages may include:

medical expenses;

loss of earnings;

rehabilitation;

other legally recoverable losses.

National procedural and damages law can still be relevant.

18. Death of Passenger

Where a passenger dies in an aviation accident, claims may be brought by persons legally entitled under the applicable law.

Potential issues include:

death during international carriage;

dependency;

funeral expenses;

loss of financial support;

non-material damage where recoverable;

limitation periods;

jurisdiction.

The Montreal Convention provides the international framework, while questions of entitlement and assessment can involve applicable national law.

19. Baggage Liability

Air carriers can potentially be liable for:

lost baggage;

damaged baggage;

destroyed baggage;

delayed baggage.

A passenger should distinguish:

Baggage claim

from

Flight-delay compensation.

They arise under different legal provisions.

20. Delayed Baggage

A passenger may suffer losses because baggage arrives late.

Examples:

emergency clothing;

toiletries;

essential personal items;

business materials.

The claimant generally needs to establish the relevant loss and comply with the Convention's procedural requirements.

The Walz decision demonstrates the importance of the Montreal Convention's unified baggage-liability regime and limits. (Infocuria)

21. Cargo Liability

Air cargo disputes can involve:

damaged goods;

missing goods;

delayed delivery;

temperature-sensitive goods;

pharmaceutical products;

perishable agricultural products;

dangerous goods;

customs-related delays.

Potential parties include:

consignor;

consignee;

airline;

freight forwarder;

handling company;

airport operator;

ground handler.

The Montreal Convention can provide the principal framework for international cargo claims.

22. Delay Liability

Airline delay can arise from:

Airline-controlled causes

aircraft maintenance;

crew problems;

scheduling failures;

operational failures;

inadequate aircraft availability.

External causes

severe weather;

bird strikes;

air-traffic restrictions;

airport closure;

security events;

political events.

The legal treatment depends on the particular event.

Pešková shows that an external event may qualify as extraordinary, but the airline's subsequent conduct and reasonable measures remain relevant.

23. Extraordinary Circumstances

This is one of the most litigated concepts under Regulation 261/2004.

An airline seeking exemption from standardised compensation generally has to establish:

that an extraordinary circumstance existed; and

that the cancellation or delay could not have been avoided even if all reasonable measures had been taken.

Examples recognised in the case law may include:

certain bird strikes;

airspace closures;

certain external security events.

But ordinary technical or operational difficulties do not automatically qualify.

24. Reasonable Measures

The phrase “reasonable measures” is crucial.

An airline cannot simply say:

“The event was outside our control.”

The question is also:

What did the airline actually do after the event occurred?

The court may consider:

alternative aircraft;

alternative routing;

crew availability;

maintenance arrangements;

airport options;

passenger rerouting;

available operational resources.

In Pešková, the CJEU specifically examined whether the airline had taken appropriate measures after the bird strike. (curia)

25. Airline's Duty of Care

Passenger protection involves more than monetary compensation.

Depending on the circumstances, an airline may have obligations relating to:

food;

refreshments;

accommodation;

communication;

rerouting;

reimbursement.

McDonagh is particularly important because extraordinary circumstances did not eliminate the carrier's obligation to provide the required care.

26. Cancellation

Cancellation creates different legal consequences from delay.

A cancellation may potentially give passengers rights to:

reimbursement;

rerouting;

care;

compensation, unless an applicable exemption exists.

The airline's reason for cancellation is therefore legally important.

27. Denied Boarding

Denied boarding usually involves situations where:

the passenger has a valid reservation;

the passenger presents themselves as required;

the passenger has appropriate documentation;

the carrier nevertheless refuses carriage.

Regulation 261/2004 provides specific rights in such circumstances.

The airline's explanation for the refusal can become critical.

28. Overbooking

Overbooking is a classic example of airline operational decision-making producing statutory passenger rights.

Where an airline sells more reservations than available seats and must refuse boarding to passengers, the Regulation can create:

compensation;

assistance;

rerouting or reimbursement.

The legal consequences differ depending upon whether the passenger voluntarily gives up the reservation or is involuntarily denied boarding.

29. Connecting Flights

Connecting flights generate complex liability questions.

Important issues include:

one booking or separate bookings;

same airline or different airlines;

EU or non-EU carrier;

delay at intermediate airport;

delay at final destination;

codeshare arrangements;

operating carrier versus contracting carrier.

The United Airlines decision demonstrates that the legal analysis cannot be reduced to the nationality of the airline. (Infocuria)

30. Air Carrier Contractual Liability

The passenger's ticket creates a contractual relationship with the carrier.

Potential contractual issues include:

agreed itinerary;

carriage obligations;

baggage;

schedule;

rerouting;

fare;

cancellation;

contractual exclusions.

However, contractual terms cannot simply override mandatory EU passenger-protection rules.

31. Tort/Delict Liability

Separate national tort/delict principles can sometimes become relevant, but the Montreal Convention is particularly important for international carriage claims within its scope.

The legal question therefore becomes:

Is the claim one that falls within the Convention's harmonised liability regime?

If so, the claimant cannot necessarily bypass the Convention merely by relabelling the claim as negligence or another domestic cause of action.

32. Limitation of Liability

A major feature of aviation law is liability limitation.

The Montreal Convention establishes monetary limits for certain categories of liability.

These limits are not necessarily identical across:

passenger injury;

passenger delay;

baggage;

cargo.

The limits can also be subject to the Convention's particular conditions and revisions.

Walz illustrates the importance of the Convention's liability-limit structure in baggage cases. (Infocuria)

33. Contributory Conduct

Passenger conduct may sometimes affect liability.

Examples:

failure to follow safety instructions;

knowingly carrying prohibited items;

failure to report baggage damage appropriately;

failure to mitigate loss.

The precise legal consequence depends on the applicable Convention provision and national law.

34. Airport vs Air Carrier Liability

A difficult issue is identifying the responsible party.

Suppose a passenger is injured at an airport.

Possible defendants might include:

airline;

airport operator;

ground-handling company;

security contractor;

maintenance contractor.

The fact that an incident occurred during a journey does not automatically mean that the airline is legally responsible for everything occurring at an airport.

Causation and the applicable legal regime must be established.

35. Codeshare Flights

Codeshare arrangements complicate liability because:

The airline selling the ticket may not be the airline physically operating the aircraft.

The court may need to determine:

contracting carrier;

operating carrier;

applicable Regulation;

Convention obligations;

contractual allocation of responsibility.

The United Airlines decision illustrates the importance of analysing the actual structure of the journey. (Infocuria)

36. Air Carrier Liability and Consumer Protection

Passengers are generally considered consumers in many aspects of air-carriage law.

Important concerns include:

transparency;

unfair contractual terms;

cancellation policies;

information;

compensation;

jurisdiction;

effective remedies.

However, specialised aviation legislation may take priority over general consumer-law principles in areas specifically governed by the Montreal Convention or Regulation 261/2004.

37. Evidence in Air Carrier Litigation

Important evidence can include:

38. Causation

Causation is central to civil liability.

For example:

Flight delayed → passenger misses meeting → business loses contract.

The claimant cannot necessarily recover every subsequent loss.

The court may examine:

factual causation;

foreseeability;

contractual limitations;

Convention limitations;

mitigation;

remoteness;

evidence of actual loss.

39. Air Carrier Defences

Possible defences include:

1. Extraordinary circumstances

Relevant principally to Regulation 261/2004 compensation.

2. Reasonable measures

The carrier may show that it took all reasonable measures.

3. Convention limitation

The carrier may rely upon applicable Montreal Convention limits.

4. Passenger fault

Where legally relevant.

5. Lack of causation

The alleged damage was not caused by the carrier.

6. Procedural non-compliance

The passenger failed to comply with applicable notice or claim requirements.

40. Key Difference: Compensation vs Damages

This distinction is extremely important.

Compensation

A standardised amount prescribed by legislation.

Example:

Long flight delay under Regulation 261/2004.

Damages

Compensation for actual legally recoverable loss.

Example:

Actual loss caused by baggage damage or qualifying delay under the Montreal Convention.

Therefore:

Compensation ≠ necessarily damages.

41. Case-Law Comparison

42. Practical Legal Analysis

When analysing an air-carrier claim in Europe, use this sequence:

Step 1 — Identify the event

Was it:

delay;

cancellation;

denied boarding;

injury;

death;

baggage loss;

baggage damage;

cargo loss?

Step 2 — Identify the legal instrument

Is the principal framework:

Montreal Convention;

Regulation 261/2004;

national law;

contractual law?

Step 3 — Identify the carrier

Determine:

contracting carrier;

operating carrier;

codeshare carrier.

Step 4 — Establish causation

What actually caused the loss?

Step 5 — Examine defences

Was there:

extraordinary circumstance?

reasonable mitigation?

passenger fault?

Convention defence?

Step 6 — Calculate damage

Determine:

standardised compensation;

actual financial loss;

non-material loss where recoverable;

applicable limits.

Step 7 — Check procedure

Consider:

notice;

limitation period;

jurisdiction;

evidence.

43. Important Examination Principles

Montreal Convention is central to international air-carriage liability.

Regulation 261/2004 establishes standardised passenger rights.

Long delay can result in compensation.

Technical problems are not automatically extraordinary circumstances.

Bird strikes can constitute extraordinary circumstances.

Extraordinary circumstances do not automatically eliminate the duty of care.

Baggage liability is subject to Montreal Convention rules and limits.

Operating-carrier identity can be crucial.

Connecting flights require careful legal analysis.

Compensation and damages are distinct concepts.

Causation and proof of loss remain important.

Convention liability limits can significantly affect recovery.

Airline contractual terms cannot simply override mandatory passenger protections.

The airline must generally demonstrate the factual basis for relying on relevant exemptions.

EU passenger-rights law must be interpreted consistently with the international air-carriage framework.

44. Short Revision Formula

Flight Delay

Delay + Applicable Regulation 261/2004 + Required Threshold + No Valid Extraordinary-Circumstance Defence = Potential Standardised Compensation

Cancellation

Cancellation + Passenger Protection Rules + No Applicable Exemption = Possible Compensation + Care/Rerouting/Reimbursement

Baggage

Loss/Damage/Delay + Montreal Convention + Causation + Compliance with Claim Requirements = Potential Carrier Liability

Injury

Accident + Bodily Injury + During International Carriage + Causal Connection = Potential Montreal Convention Liability

General Formula

Air Transport Contract + Legally Relevant Event + Carrier Responsibility + Causation + Recoverable Loss + Applicable Liability Regime = Potential Air Carrier Civil Liability

Conclusion

European air-carrier liability is a multi-layered legal system. The Montreal Convention provides the principal international framework for liability for passenger injury, baggage and cargo and certain delay claims, while Regulation 261/2004 provides additional standardised passenger rights concerning cancellation, denied boarding and significant delay.

The most important case-law principles can be remembered through:

Sturgeon → long delay
Wallentin-Hermann → technical problems
McDonagh → duty of care
Nelson → relationship with Montreal Convention
Walz → baggage liability
Pešková → bird strike and reasonable measures
United Airlines → connecting/non-EU carrier issues
Emirates → concept of flight

The central legal question in an air-carrier dispute is therefore not simply “Was the flight delayed or was there damage?” It is which legal regime applies, what caused the event, what obligations the carrier had, whether a defence is available, what loss is legally recoverable, and whether the claimant complied with the applicable procedural requirements. (Infocuria) 