Anak Krakatau eruption strands thousands as flights halted

Thousands of passengers across Indonesia and Southeast Asia are facing severe disruption after renewed eruptions at Anak Krakatau forced widespread flight cancellations, closing Jakarta’s main airport and affecting regional routes.

Airports close as ash cloud spreads across key routes

Flight operations at Jakarta’s Soekarno-Hatta International Airport were suspended for several hours on September 6 after a sustained eruption at Anak Krakatau sent volcanic ash drifting across busy air corridors linking Indonesia with the wider region. Publicly available information shows that at least 209 flights at the Jakarta hub alone were cancelled on Sunday, affecting both domestic and international services.

Reports from Indonesia’s disaster management agencies indicate that Anak Krakatau has been in an elevated state of activity since July 2026, with continuous eruptive episodes recorded in recent days. Observations released on September 5 and 6 describe prolonged tremors and ash emissions, prompting aviation authorities to impose temporary airspace restrictions around the Sunda Strait and western Java.

The ash plume, estimated by regional monitoring centers to reach several kilometers into the atmosphere, has raised concerns over engine safety on aircraft operating to and from Jakarta and neighboring airports. As a result, multiple hubs in western Indonesia temporarily halted or limited operations as the ash cloud shifted with prevailing winds.

International media coverage highlights that by Sunday evening, flight suspensions and cancellations at Soekarno-Hatta and other affected airports had disrupted travel for well over one hundred thousand passengers, with knock-on effects for aircraft rotations and crew scheduling expected to ripple through the network for days.

Passengers stranded in Jakarta, Singapore and beyond

The abrupt shutdown of flight operations left terminals crowded with stranded travelers in Jakarta, Singapore and several Malaysian cities. Images and accounts from Soekarno-Hatta show long queues at airline counters as passengers attempted to rebook journeys, secure hotel rooms or request refunds while departure boards filled with cancellation notices.

According to Malaysian and Indonesian media, at least 31 Jakarta-bound flights from Malaysia were cancelled on September 6 alone, disrupting travel for holidaymakers, business travelers and transit passengers. Coverage from regional outlets describes hotels near Jakarta’s main airport rapidly reaching capacity, with some travelers advised that the next available flights could be two days away.

Travel disruption has not been limited to Indonesia. Reports from Singapore note that at least 19 services operated by Singapore Airlines between Changi Airport and Jakarta were cancelled or significantly delayed on September 6. Snaking queues formed at airline service desks as affected passengers sought alternative routings via other Indonesian cities or postponed trips altogether.

Social media posts and forum discussions from passengers in Ho Chi Minh City, Bali and other regional gateways suggest that some travelers bound for Jakarta have been left in transit for extended periods, watching the evolving ash forecasts and airport advisories in hopes of securing a seat once operations resume.

Airlines issue waivers as they navigate volatile conditions

Airlines operating in and out of Jakarta and other Indonesian destinations have begun publishing advisories and waivers as they adjust schedules around the eruption. Low cost carrier AirAsia reported that all of its services to and from Jakarta on September 6 were cancelled or rescheduled due to the ash cloud and temporary closure of Soekarno-Hatta, with passengers offered options to change dates or request credit.

Singapore-based carrier Scoot released its own advisory listing a series of flights on September 6 that were cancelled as a precaution, citing volcanic ash arising from the Anak Krakatau eruption. The airline indicated that it would continue to monitor the situation and adjust its timetable as necessary, encouraging passengers to check flight status before heading to the airport.

Information from Indonesian airport operator InJourney shows that more than 200 scheduled flights were cancelled at Soekarno-Hatta on Sunday, encompassing domestic routes across the archipelago as well as international connections to Southeast Asia and beyond. Additional suspensions at other airports in western Java and southern Sumatra added to the operational complexity for airlines attempting to reposition aircraft and crew.

Industry analysis in regional media suggests that even after initial airport closures are lifted, airlines may need several days to fully restore normal service. Recovery operations are expected to prioritize stranded passengers and high-demand business routes, while some lower frequency services could remain disrupted as carriers rebalance capacity.

Volcanic risk highlights Indonesia’s aviation vulnerabilities

Anak Krakatau, located in the Sunda Strait between Java and Sumatra, is one of Indonesia’s most closely watched volcanoes due to its history and proximity to major transport corridors. The current eruption follows a well documented period of heightened activity that has been building since mid 2026, according to national monitoring agencies and scientific reports.

The volcano’s location near Jakarta’s airspace means even moderate ash-producing events can have an outsized impact on air travel. Aviation safety guidelines treat volcanic ash as a serious hazard, with particles capable of damaging jet engines, reducing visibility and affecting aircraft systems. As a result, flight suspensions are typically implemented conservatively, often before conditions worsen.

Indonesia sits on the Pacific Ring of Fire and manages a dense network of domestic routes that frequently intersect with volcanic regions. Recent events at Anak Krakatau underline how quickly eruptions can cascade into large scale disruption for travelers, particularly when they affect Jakarta, the country’s primary gateway for international and connecting flights.

Travel industry observers note that the latest disruption will likely rekindle debate on contingency planning for volcanic events, including the robustness of communication channels with passengers, accommodation arrangements near major hubs and the flexibility of ticketing policies when airspace restrictions are imposed at short notice.

What travelers can expect in the coming days

As of September 7, forecasts from regional ash advisory centers and updates from Indonesian agencies indicate that Anak Krakatau remains active, though ash dispersal patterns are subject to change with shifting winds. Airport notices suggest that operations at Soekarno-Hatta and other affected airports may resume gradually, potentially under enhanced monitoring and route adjustments.

Travelers scheduled to fly to or through Jakarta and western Java in the coming days are being advised, through airline announcements and travel advisories, to check their flight status frequently and allow extra time at the airport. Flexible booking policies introduced by several carriers are expected to remain in place while the situation evolves.

Tourism operators in Indonesia and neighboring countries are monitoring potential spillover effects, particularly for travelers connecting via Jakarta to popular destinations such as Bali, Yogyakarta and Lombok. Early indications from local travel forums suggest that flights in and out of Bali’s Ngurah Rai Airport are largely operating, though services to Jakarta and nearby hubs remain subject to change.

For now, publicly available information points to a cautious approach from aviation authorities and airlines, balancing the need to restore connectivity with ongoing safety concerns around Anak Krakatau’s eruptive behavior. Passengers already stranded or due to travel are likely to face a period of uncertainty as the region waits for more stable conditions over one of Southeast Asia’s busiest air corridors.

Al Jazeera coverage of Anak Krakatau eruption and airport closures

ABC News report on flight suspensions linked to Anak Krakatau

ANTARA update on cancellations and passenger support at Soekarno-Hatta

Scoot advisory on flights affected by Anak Krakatau eruption

AirAsia statement on Jakarta flight cancellations due to ash cloud