On July 26, 2025, Azores Airlines flight S4504 became the focus of a major security event at Lisbon Airport due to a bomb threat received mid-flight. For travelers, airline staff, and airport authorities, such incidents can be stressful and confusing. This timeline provides a clear, step-by-step overview of what happened, what to expect during similar situations, and practical advice for managing delays and disruptions. The goal is to reassure passengers and help everyone understand the process, from the first sign of trouble to the safe resolution and return to normal operations.
Timeline of Events: Azores Airlines Flight S4504 Bomb Threat Incident
Pre-Flight and Departure
– 09:37 AZOST: Azores Airlines flight S4504, an Airbus A320neo, departs from Ponta Delgada. The flight is delayed by over one hour, which is not uncommon due to weather, technical checks, or air traffic. Passengers are informed of the delay and board as usual, expecting a routine journey to Bilbao.
In-Flight: Bomb Threat Received
– ~11:57 AZOST: About two hours and twenty minutes into the flight, crew members receive a bomb threat. This is a rare but serious event. The captain immediately informs air traffic control and follows strict safety protocols. The main priority is to keep everyone calm and safe while preparing for an emergency landing.
Diversion and Landing at Lisbon Airport
– ~13:00 AZOST: The aircraft is diverted from its original destination, Bilbao, and lands safely at Lisbon Airport. The landing is smooth, and passengers are told to remain calm and follow crew instructions. Lisbon Airport is chosen because it has the facilities and trained staff to handle such emergencies.
Post-Landing: Security Protocols Activated
– Immediately after landing: The aircraft is directed to an isolated area of Lisbon Airport. This area is away from other planes and airport buildings to reduce risk. Police, airport security, and emergency services are already waiting. Passengers are asked to stay seated while authorities assess the situation.
Passenger Disembarkation and Inspection
– ~14:30 AZOST: Disembarkation begins under police supervision. Passengers leave the plane in small groups, guided by security staff. Their baggage is left on board for inspection. Everyone is moved to a secure area inside the airport, where they can rest and receive updates.
Aircraft and Baggage Inspection
– Following disembarkation: Portuguese authorities conduct a thorough search of the aircraft and all baggage. This process can take several hours, depending on the size of the plane and the number of passengers. Specially trained teams use detection equipment and search dogs to check for explosives or suspicious items.
Investigation and Detentions
– After inspection: Authorities determine that the bomb threat was a false alarm. However, two passengers are detained for questioning, suspected of being involved in making the threat. This is a standard part of the investigation, as police need to understand how the threat was communicated and if anyone is responsible.
Official Statements and Communication
– Shortly after the incident: Azores Airlines and its parent company, SATA Air Açores, confirm that the security protocols worked as planned. They assure the public that all passengers and crew are safe, and that the threat was not real. Portuguese authorities also release statements, explaining the steps taken and the outcome.
Airport Operations and Passenger Support
– During and after the incident: Lisbon Airport continues to operate normally, though there is a visible police presence. Other flights are not affected, and airport staff work to help stranded passengers. Travelers are given food, water, and information about their next steps, such as rebooking flights or arranging ground transportation.
Key Milestones and Estimated Timeframes
– Initial delay and departure: Over one hour late, but this is not unusual.
– Bomb threat received: About 2 hours 20 minutes into the flight.
– Landing at Lisbon Airport: Approximately 1:00 p.m.
– Disembarkation: Begins around 2:30 p.m., after safety checks.
– Inspection and investigation: Can last several hours, depending on the situation.
– Resolution: Once authorities confirm there is no real threat, passengers are allowed to collect their belongings and continue their journeys.
What to Expect at Each Stage
– During the flight: Crew will remain calm and professional. Passengers may not be told all details right away to avoid panic.
– After landing: Expect to wait on the plane until security gives the all-clear. Follow all instructions from crew and police.
– Disembarkation: Move slowly and calmly. You may be asked to leave personal items behind temporarily.
– While waiting: Airport staff will provide updates, food, and water. Be patient, as safety checks are thorough.
– After inspection: You may be interviewed by police, especially if you saw or heard anything unusual.
Potential Delays and How to Avoid Extra Stress
– Delays are likely: Security checks take time. Bring snacks, water, and entertainment for children if possible.
– Stay informed: Listen for announcements and check official sources for updates.
– Keep calm: Remember that these procedures are for your safety. Most threats turn out to be false alarms.
– Cooperate fully: Answer questions honestly and follow all instructions from authorities.
Practical Tips for Passengers
– Travel with essentials: Keep important items like medication, identification, and a phone charger in your carry-on.
– Know your rights: Airlines must provide care during long delays, including food and accommodation if needed.
– Contact family: Let loved ones know you are safe as soon as possible.
– Check official resources: For updates on airport security and passenger rights, visit the Portuguese Immigration and Borders Service (SEF).
Lessons Learned and Future Outlook
– Airlines and airports are prepared: This incident shows that security protocols work and that passenger safety is always the top priority.
– Investigations continue: Authorities will look into the motives behind the bomb threat and take steps to prevent similar incidents.
– Temporary changes: Passengers on similar routes may notice extra security for a while, such as more police or additional baggage checks.
Stakeholder Roles
– Azores Airlines: Responsible for activating emergency procedures and keeping passengers safe.
– Lisbon Airport: Provides secure areas and supports emergency operations.
– Portuguese Authorities: Lead the investigation and ensure public safety.
– Passengers: Play a key role by staying calm, following instructions, and reporting anything suspicious.
Summary and Takeaways
This timeline of the Azores Airlines flight S4504 bomb threat at Lisbon Airport shows how quickly and effectively everyone responded. While delays and stress are unavoidable in such situations, the safety of passengers and crew always comes first. According to analysis by VisaVerge.com, incidents like this highlight the importance of strong security measures and clear communication between airlines, airports, and law enforcement. By understanding the process and knowing what to expect, travelers can feel more confident and prepared, even in unexpected situations.
Learn Today
Bomb Threat → A warning or indication that an explosive device may be aboard an aircraft, requiring emergency protocols.
Azores Airlines → A regional airline connecting the Azores islands with mainland Portugal and Europe, operating flight S4504.
Diversion → The process of changing an aircraft’s planned destination due to emergencies or safety concerns.
Disembarkation → The organized exit of passengers from an aircraft, often supervised for security reasons in emergencies.
SEF → Portuguese Immigration and Borders Service responsible for managing immigration and security at borders.
This Article in a Nutshell
On July 26, 2025, Azores Airlines flight S4504 faced a bomb threat mid-flight. It safely diverted to Lisbon Airport, where security protocols were activated. Passengers were kept calm, inspected, and two were detained. The incident highlights airport coordination and passenger safety during emergencies, reassuring travelers with clear processes and effective response.
— By VisaVerge.com
