SriLankan Airlines has announced the cancellation of its scheduled services between Colombo and Jakarta following the eruption of Anak Krakatoa volcano, raising serious concerns about aviation safety in the region. The affected flights, UL 364 operating from Colombo to Jakarta and UL 365 operating from Jakarta back to Colombo, have been grounded as a precautionary measure to protect passengers and crew from the dangers posed by volcanic ash clouds drifting across key flight corridors in Southeast Asia.
Which Flights Have Been Cancelled?
The two flights directly impacted by this decision are SriLankan Airlines flight UL 364, which operates on the Colombo to Jakarta route, and its return service, UL 365, which flies from Jakarta back to Colombo. Both services were part of the airline's scheduled operations for the day of the announcement, September 7, 2026. The cancellations were confirmed by the airline's management team after careful consultation with aviation safety authorities and a thorough assessment of the volcanic activity and its potential impact on airspace safety.
Passengers who had booked seats on either of these two flights are being advised to contact SriLankan Airlines directly through official customer service channels to arrange rebooking options or to inquire about refund eligibility. The airline has urged affected travelers to monitor official communications for the latest updates as the situation continues to develop on the ground.
Why Is Anak Krakatoa Dangerous for Aviation?
Anak Krakatoa, which translates to "Child of Krakatoa," is an active stratovolcano located in the Sunda Strait between the Indonesian islands of Java and Sumatra. It is one of the most historically significant and geologically active volcanoes in the world, born from the remnants of the catastrophic 1883 Krakatoa eruption that devastated the region and had measurable effects on global temperatures. The volcano has remained persistently active throughout the twentieth and twenty-first centuries, with major eruption events recorded in 2018 and subsequent years.
Volcanic ash poses an extreme and well-documented hazard to commercial aviation. When a volcano erupts, it can eject enormous quantities of fine particulate matter and glass-like ash particles high into the atmosphere, where they can be carried hundreds or even thousands of kilometers by prevailing winds. These ash clouds are invisible to standard aircraft radar systems, making them particularly treacherous for pilots. When volcanic ash enters a jet engine, it can melt due to the extreme heat inside the engine and then resolidify on turbine blades, potentially causing engine failure. Additionally, ash can obscure cockpit windshields, damage sensitive avionics equipment, and reduce visibility to dangerous levels.
International aviation authorities, including the International Civil Aviation Organization (ICAO), maintain strict protocols around volcanic ash zones. Airlines operating in or near affected airspace are required to divert or cancel flights until the ash cloud dissipates or moves away from active flight corridors. SriLankan Airlines' decision to cancel UL 364 and UL 365 is fully consistent with these globally recognized safety standards.
Impact on Passengers and Travel Plans
The cancellation of both Colombo-Jakarta services is expected to cause significant disruption for passengers traveling between Sri Lanka and Indonesia for business, tourism, and personal reasons. Jakarta, as the capital and primary commercial hub of Indonesia, is a major destination for regional travel, and any disruption to air connectivity between the two countries carries economic and logistical consequences for travelers on both ends of the route.
Passengers stranded in Colombo awaiting their Jakarta-bound flight, as well as those in Jakarta waiting to board the return service to Colombo, are encouraged to reach out to SriLankan Airlines' customer care teams as soon as possible. The airline is expected to offer alternative travel arrangements, including rebooking on the next available flights once airspace safety is confirmed, as well as full refunds for those who are unable to accommodate changes to their itineraries.
Travel insurance holders are also advised to review their policies, as many comprehensive travel insurance plans include provisions for flight cancellations caused by natural disasters and volcanic activity, which may entitle affected passengers to compensation for additional expenses such as accommodation and meals incurred during the disruption period.
SriLankan Airlines' Commitment to Passenger Safety
SriLankan Airlines has reaffirmed that passenger and crew safety remains its highest operational priority. The airline's decision to proactively cancel both services rather than attempt to navigate around the ash zone reflects a responsible and cautious approach to flight operations in the face of unpredictable natural events. Aviation experts and industry observers have broadly praised the airline's swift response to the developing volcanic situation.
As Anak Krakatoa's activity continues to be closely monitored by Indonesian volcanological authorities and international aviation safety bodies, SriLankan Airlines has committed to restoring its Jakarta services as soon as conditions are deemed safe for flight operations. Passengers and travel agents are encouraged to check the airline's official website and social media channels regularly for real-time updates on the status of UL 364 and UL 365 and any revised scheduling announcements.