Travellers across Indonesia are racing to rebook journeys after a powerful eruption of Anak Krakatau forced the temporary closure of Jakarta’s main airport and triggered widespread flight cancellations on Sunday.

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Travellers scramble for new flights after Indonesia volcano

Airports across western Indonesia disrupted

Operations at Soekarno-Hatta International Airport outside Jakarta were temporarily halted on September 6 after ash from Anak Krakatau drifted across western Indonesia, creating hazardous conditions for aircraft. Publicly available information indicates that hundreds of flights were cancelled or delayed as air traffic controllers restricted movements in affected airspace.

Reports from Indonesian and international media describe thousands of passengers stranded in terminals as airlines worked through rapidly changing weather and ash advisories. Some services were rescheduled for later in the day, while others were pushed to the following 24 to 48 hours, depending on evolving forecasts and aircraft availability.

The ash cloud, originating in the Sunda Strait between Java and Sumatra, spread over a broad area and affected several airports beyond Jakarta. Coverage from local outlets indicates that flight disruption extended to Medan on Sumatra and to popular tourism gateways, including Bali and Lombok, even though these destinations are far from the eruption site.

Aviation and geological agencies in Indonesia continue to monitor the eruption sequence and ash dispersion patterns, issuing updated advisories to airspace managers and airlines as conditions shift.

Tourists in Bali and Lombok hit by cascading cancellations

While Jakarta experienced the most severe initial shutdown, travellers in resort areas such as Bali and Lombok have also been left rearranging plans. Data published by airport operators and local media in Indonesia show that I Gusti Ngurah Rai International Airport in Bali cancelled more than a dozen flights on Sunday linked to the Anak Krakatau ash cloud.

Several of the affected services involved low-cost and regional carriers connecting Bali with domestic hubs, including Jakarta. According to airport notices, a mix of arrivals and departures were pulled from the schedule as operators assessed the ash hazard along flight paths, even when conditions on the ground at Bali remained clear.

On Lombok, Angkasa Pura-operated Lombok International Airport reported at least eight cancellations on the Lombok–Jakarta route, involving airlines such as TransNusa, Super Air Jet, Garuda Indonesia and Citilink. Local reports describe passengers queuing at airline desks for rebooking options or opting to reroute via unaffected airports once onward connections became available.

The disruption has been particularly acute for international visitors using Bali and Lombok as holiday gateways or as stepping stones to other islands. With seats on alternative flights limited in the short term, some travellers have been advised through airline channels and online travel platforms to prepare for overnight stays or extended holidays while operations stabilise.

Scramble for alternatives as airlines adjust schedules

As cancellations mounted, airlines serving Indonesia began to reconfigure schedules, deploy larger aircraft on key routes and introduce recovery flights where airspace conditions allowed. Information posted by carriers shows that some international services into Jakarta were diverted to alternative hubs such as Singapore or rescheduled for later departure slots once ash concentrations were reassessed.

Low-cost and regional operators have encouraged passengers to switch travel dates, accept credit vouchers or request refunds under disruption policies activated for the eruption. In some cases, rebooking penalties have been waived for travel falling within specific time windows, reflecting the scale and suddenness of the ash-related closures.

Passengers with complex itineraries involving onward connections through Jakarta, Bali or other Indonesian hubs have turned to online booking engines and airline apps to piece together new routings. Travel forums and social media posts highlight examples of travellers combining domestic ferries, rail and intra-Asian flights routed via Kuala Lumpur, Bangkok or Singapore to bypass temporarily affected corridors.

Aviation analysts note that even a short shutdown at a major hub such as Soekarno-Hatta can create a backlog that takes days to absorb. Aircraft and crew rotations are knocked out of position, leading to knock-on delays across domestic networks and on long-haul services linking Indonesia with Australia, the Middle East and Europe.

What stranded travellers are being advised to do

Travel advisories issued by airlines, insurers and consular services in the region emphasize that safety considerations take priority when volcanic ash is present and that flight suspensions can be extended at short notice if conditions worsen. Passengers are being urged to rely on official airline channels rather than making unnecessary trips to airports while schedules remain fluid.

Common guidance includes checking booking management tools and mobile apps for the latest status updates, confirming whether flights are cancelled outright or simply delayed, and avoiding rebooking through multiple providers at once, which can complicate refunds and vouchers. Travel insurers generally recommend keeping detailed records of additional accommodation, meal and transport costs to support potential claims where policies cover natural disaster disruption.

Industry information suggests that travellers with imminent departures to Jakarta or through affected corridors may be offered date changes without additional charges, subject to fare rules and seat availability. Those with later itineraries are being asked to monitor advisories from Indonesia’s meteorology and volcanology agencies, as well as carrier-specific announcements, in case airspace or airport closures are extended.

For visitors already in Indonesia, local tourism bodies and accommodation providers in destinations such as Bali, Lombok and Yogyakarta are sharing schedule updates and practical tips, including alternative overland routes where appropriate. Many hotels near major airports are reporting increased demand as passengers opt to stay close to departure points while waiting for new flight slots.

Ongoing volcanic activity raises wider travel questions

The Anak Krakatau eruption has renewed attention on Indonesia’s position along the Pacific Ring of Fire, where frequent volcanic activity intersects with one of the world’s busiest domestic aviation markets. Recent months have also seen flight adjustments around other active volcanoes in the archipelago, highlighting the need for flexible travel planning.

Travel specialists point out that volcanic ash events typically have localized and time-limited impacts compared with broader weather systems, but the presence of a major international hub within range of an ash plume can amplify disruption. The current episode has shown how quickly flight schedules between Southeast Asian capitals, Indonesian islands and long-haul destinations can be reshaped when a key airway closes.

For now, published coverage indicates that airlines and Indonesian aviation authorities are coordinating closely with volcanology and meteorological services to map ash concentrations and reopen corridors as conditions permit. Once ash disperses and runway inspections confirm safe operating conditions, schedules are expected to normalize, although backlogs could linger for several days.

Prospective visitors to Indonesia in the coming weeks are being encouraged to retain some flexibility in itineraries, keep contact information up to date with airlines and tour operators, and monitor travel advisories for any escalation in alert levels at Anak Krakatau or other volcanoes in the region.

Al Jazeera: Indonesia’s main airport suspends flights due to Anak Krakatau

Bernama: Soekarno-Hatta temporarily closed after Anak Krakatau eruption

ANTARA English: Bali airport cancels flights amid Anak Krakatau activity

The Guardian: Volcanic ash cloud halts flights at Indonesia’s main airport