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Volcanic ash from Indonesia’s Anak Krakatau eruption has forced multiple shutdowns of Jakarta’s Soekarno-Hatta International Airport on Sunday, disrupting long-haul connections including Qatar Airways services between the capital and Doha.
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Airport Closure Windows Lengthen As Ash Tests Stay Positive
Publicly available information from Indonesia’s transport ministry shows that Soekarno-Hatta International Airport first suspended flight operations in the early hours of Sunday, September 6, after overnight paper tests detected volcanic ash on airport surfaces. An initial closure from 01:30 to 05:30 local time was imposed under NOTAM A3341/26, affecting both domestic and international movements.
Ministry updates indicate that subsequent ash tests carried out on Sunday morning also returned positive results, prompting extensions of the shutdown period. Additional NOTAMs extended the closure to 09:30 and later pushed it further into the afternoon, with one directive citing a shutdown window from 13:23 to 17:30 local time as ash from Anak Krakatau continued to drift across the Jakarta area.
Indonesia’s civil aviation authorities report that the expanding closure window has progressively increased the number of grounded flights. Early ministry figures referenced 209 affected movements and nearly 23,000 passengers during the first closure period. Later updates from the state airport operator and national media raised the tally at Soekarno-Hatta alone to more than 700 scheduled flights disrupted as the restrictions were prolonged.
Local news coverage notes that the airspace restrictions around Soekarno-Hatta have been coordinated with closures at several nearby airports, including Halim Perdanakusuma in Jakarta and Radin Inten II in Lampung, as ash identified at altitudes of up to 6,000 meters over Java and higher over Sumatra led air navigation services to widen the protected area.
International Networks Hit, With Doha Route Among Key Casualties
Regional wire services and airport operator data show that the ash-related shutdown has rippled across international networks into and out of Jakarta, with long-haul sectors among the most affected. Coverage compiled by Malaysian and Indonesian outlets lists flights linking Soekarno-Hatta with Doha, Amsterdam, Hong Kong, Seoul, Singapore, Sydney and Kuala Lumpur among those canceled, delayed or rescheduled.
Reports from Kuala Lumpur’s airport operator cited in regional media state that more than 30 Jakarta-bound flights from Malaysia were canceled on Sunday because of the closure of Soekarno-Hatta. The same summaries indicate that services on the Jakarta–Doha corridor, typically operated by Qatar Airways, were among those unable to depart or arrive during the extended shutdown, forcing passengers to rebook or wait for the airspace to reopen.
While some carriers have been able to hold aircraft and crews in place at their origin airports, others have had to keep jets parked on the ground in Jakarta. Transport ministry documentation notes that around 170 aircraft remained on the apron at Soekarno-Hatta during part of the closure, as operators waited for updated ash assessments and potential departure clearances.
Travel forums and aviation tracking communities monitoring the situation report that some flights into Indonesia have diverted to regional hubs such as Singapore and other Southeast Asian gateways, but long-haul services directly tied to Soekarno-Hatta, including links to the Gulf region, have experienced significant delays or cancellations as the disruption has deepened.
Scale of Disruption Grows Across Indonesia’s Main Hub
Data shared by Indonesia’s state-owned airport operator and summarized by national news agencies highlight the growing scale of the disruption at Soekarno-Hatta. By Sunday afternoon, monitoring by the operator showed that more than 700 scheduled flights for the day had been affected at the Jakarta hub as a result of the extended airspace closure and knock-on operational impacts.
Earlier in the day, a detailed breakdown from the Directorate General of Civil Aviation recorded 33 affected flights even before the full closure began, followed by hundreds more as the ash tests triggered successive NOTAMs. International routes bore much of the early impact, with at least 16 cancellations, seven delays and five reschedulings on overseas services in one reporting window, while domestic routes to destinations such as Lampung, Denpasar and Surabaya also faced cancellations and diversions.
As the day progressed, updated tallies cited by national outlets indicated that more than 22,000 passengers were directly impacted in the initial closure period, with the total number of disrupted travelers climbing as additional flights were canceled and airport operations remained limited. Passenger terminals at Soekarno-Hatta saw growing crowds as travelers sought rebooking options and real-time information on when services might resume.
Indonesia’s transport agencies have emphasized in public statements that navigation and meteorology teams are continuously monitoring ash dispersion patterns. The reopening of Jakarta’s airspace is being tied to the outcome of repeated surface and atmospheric tests designed to ensure that volcanic ash has sufficiently cleared from critical flight paths and airport operating areas.
Persistent Anak Krakatau Activity Drives Aviation Risk
The renewed air travel disruption stems from a fresh phase of eruptive activity at Anak Krakatau, the volcanic island located in the Sunda Strait between Java and Sumatra. Indonesia’s meteorological and volcanology agencies, as cited in regional and international coverage, report that the volcano began a series of eruptions late on Friday, producing lava fountains and ash plumes that spread widely over the weekend.
Monitoring data released by these agencies and summarized by aviation authorities show that ash clouds were detected at varying altitudes on both the Java and Sumatra sides of the strait, with some plumes rising to high cruising levels used by commercial jets. Satellite imagery and ground observations shared on public channels indicate that fine ash particles were transported by prevailing winds toward the Jakarta region, creating an elevated hazard for aircraft engines and flight operations.
According to published coverage drawing on meteorological assessments, the ash dispersion pattern has been variable, with changing wind directions influencing when and where concentrations of ash reach thresholds that trigger aviation restrictions. This variability has contributed to the need for rolling NOTAMs and periodic reevaluations of conditions at Soekarno-Hatta and other affected airports.
Aviation safety guidance used internationally treats volcanic ash encounters as a serious operational risk, given the potential for engine damage, reduced visibility and abrasion of cockpit windows and airframe surfaces. In line with these principles, Indonesian authorities have extended closures whenever test results suggested that ash contamination remained a concern, even as pressure has grown to restore connectivity through the country’s primary international gateway.
Travelers Urged to Monitor Airline and Airport Advisories
With the situation at Soekarno-Hatta evolving throughout Sunday, airlines, airports and aviation regulators have used public websites and social media channels to distribute updated information on flight statuses. Low-cost and full-service carriers operating in Indonesia, including regional airlines serving Jakarta, have issued advisories on cancellations and re-accommodations as fresh ash test results prompted rolling changes to operating plans.
Public notices from Indonesia’s transport ministry and the national airport operator advise passengers booked on flights to or from Jakarta to closely monitor official airline updates before traveling to the airport. Travelers are also being encouraged by airports in neighboring countries to check the status of Jakarta-bound services, as disruptions at Soekarno-Hatta continue to affect schedules at major hubs around Southeast Asia.
Observers note that once conditions allow flight operations to resume, airlines are likely to prioritize clearing backlogs on trunk routes, including busy links between Jakarta and major regional and intercontinental destinations such as Doha. However, the pace of recovery will depend on how quickly ash concentrations subside to levels deemed safe for aircraft and how long it takes to reposition aircraft and crews affected by diversions and ground holds.
For now, published operational data and media reports point to a prolonged day of disruption across Indonesia’s aviation system, with Anak Krakatau’s ash cloud keeping jet engines silent at the country’s busiest airport and disrupting global connections that rely on Jakarta as a key Southeast Asian hub.
Indonesia Ministry of Transportation – Soekarno-Hatta operational update
Bernama – Anak Krakatau eruption temporarily closes Soekarno-Hatta
ANTARA News – Mount Anak Krakatau eruption impacts flights at Soekarno-Hatta
Al Jazeera – Indonesia’s main airport suspends flights due to Anak Krakatau
Qatar Civil Aviation Authority – Indonesia’s main airport flight suspensions