Aviation Law
In the third part of our series on the Air Passenger Rights Reform, we examine the overhauled regime for denied boarding according to Art. 4. Under the reformed regulation passengers who experienced denied boarding against their will must be compensated in accordance with Article 7(1) within seven calendar days. Additionally, the operating carrier is required to offer an immediate choice between rerouting and reimbursement also within seven calendar days in accordance with Article 8. Finally, the airline must immediately provide care and assistance under Article 9, with refreshments to be granted without any delay .
The new definition of denied boarding in Article 2(j)
Denied boarding is defined as a refusal to transport passengers although they presented themselves for boarding correctly, except where reasonable grounds exist. This includes scenarios such as traditional overbooking situations. The reform even mentions explicitly in recital 11 the CJEU Finnair decision as another denied boarding scenario.
Normally the relevant time for correct boarding would be the arrival of the passenger at the indicated boarding time or not later than 45 minutes before departure at the gate of the flight (cp. Art. 4(1)). This clarifies what was disputed before: the relevant location of the passenger is at the correct gate and not just at the airport or the check-in counter.
One critical adaptation in the reform is the situation that a passenger is informed in advance that he or she will be denied boarding against his or her will. This is now legally considered “denied boarding”, triggering immediate compensation rights under Article 7 without the passenger having to physically appear at the gate.
Reasonable grounds
Reasonable grounds generally allow airlines to deny boarding without being obliged to pay compensation afterwards. These reasons are not legally defined. The below mentioned constellations are mere examples, the enumeration of scenarios in Article 2(j) is non-exhaustive and can include many other situations as well.
Firstly, carriers retain the right to deny boarding without being liable for compensation if a passenger presents inadequate travel documentation. Moreover, for the first time “unruly behavior” that threatens safety or security is explicitly listed as a reasonable ground for denial according to recital 12.
Additionally, carriers must correct spelling mistakes free of charge at least once, up to 48 hours before departure according to Article 12a (1). Recital 14 indicates that a spelling error that does not change the identity of the passenger cannot be used as a valid reason for denied boarding. Airlines can also not deny boarding because a passenger uses a self-printed boarding pass, provided it is readable according to Article 11b. They also may not charge for printing a boarding pass at the airport if the passenger has already checked in.
The burden of proof
The reform places an increasingly evidentiary burden on the carrier: In any case where boarding is denied, the operating air carrier bears the burden of proof to justify that the grounds for the denied boarding were “reasonable”.
This requirement introduces specifically a conflict with border control procedures. During automated immigration checks like ESTA verifications, airline gate agents are frequently presented with nothing more than an unexplained “red light” status indicator from government systems, leaving the carrier without the specific reason. However, official documentation is needed to substantiate the denial in court. While IATA Resolutions offer guidelines for airlines on how to handle the immigration process, for a defense of a claim in court, airlines should implement protocols at the gate, ensuring that ground staff records the details for the specific refusal to grant the respective passenger access to the aircraft.
Crucially, however, the passenger is not entirely relieved of evidentiary duties. The travelers still retain the initial burden of proving the fundamental grounds of their claims, specifically demonstrating that they presented themselves for boarding in compliance with Article 4(1) and that they were indeed denied boarding by the airline.
The “no-show” ban in Article 4(5)
One of the most impactful commercial changes is the formal prohibition of “no-show” clauses as set out in Art. 4 (5). Airlines may no longer deny boarding on a return journey solely because the passenger did not take the outbound flight covered by the same air transport contract. Furthermore, carriers are strictly prohibited from charging any “re-optimization” or “no-show” fees to allow a passenger to use the remaining segments of the ticket.
While this removes a stream of revenue, the codification provides a clarification . Airlines must now ensure that their booking engines and check-in systems do not automatically cancel the inbound journey upon an outbound “no-show”. It is important to recognize that the legislative wording refers exclusively to “outbound” and “inbound” journeys, meaning that the ban does not apply generally to other multi-segment itineraries.
This narrow scope reflects the fundamental principle that the regulation is primarily designed to protect consumers during disruptions, not to interfere with the pricing structures of airlines, which are governed by entirely separate legal frameworks.
Consequently, highly debated pricing workarounds like “skiplagging” (or hidden-city ticketing, where passengers deliberately disembark at an intermediate transit point to exploit fare differentials) remain entirely outside the scope of the Article 4(5) ban. Because no EU-reform source or recital mentions this scenario, skiplagging continues to be classified as an abuse of the airline’s pricing system rather than a protected passenger right.
This statutory provision provides airlines with a vital strategic option. To defend their pricing mechanisms against cross-ticketing and other ticketing manipulations, legal departments should immediately review and update their General Terms and Conditions (GTCs). By incorporating carefully chosen wording, carriers can ensure that they remain legally permitted to adjust fares, cancel subsequent segments, or deny boarding in any non-standard, manipulative passenger scenario that falls outside the narrow, legally defined outbound-to-inbound “no-show” ban.
Conclusion
The reform has given the rules on denied boarding some more certainty. It brings welcome clarification through the new definition in terms of where the passenger has to be located for the boarding process. While providing some examples for accepted reasons to deny boarding the reform still places great burden of proof on the airlines. This means that decisions made at the gate must be properly documented and explained.
The narrow definition of the no-show prohibition also leaves carriers with room to protect their interest in upholding their pricing structures outside the specific outbound-inbound constellation covered by Article 4(5). The practical challenge will be the adaption of the booking, check-in and gate procedures to the new requirements. We will gladly support you in this process. This includes the necessary amendments of your General Terms and Conditions!
Please note: Our newsletter series is based on the version of the regulation from July 1, 2026.
