Krakatau Eruption Disrupts Flights Across Indonesia

SINGAPORE – An eruption of Indonesia’s Anak Krakatau has disrupted the country’s principal international gateway, turning a volcanic emergency in the Sunda Strait into a wider test of transport resilience.

Eight airports suspended operations on September 6, affecting more than 1,500 flights and approximately 170,000 passengers, according to figures reported by Reuters. Ash reached about 15,000 meters, spreading the disruption well beyond communities near the volcano between Java and Sumatra.

Singapore Airlines extended its cancellations into September 7. Its advisory, updated at 11 p.m. Singapore time on September 6, lists nine canceled services for Monday between Singapore and Jakarta, with departures spanning early morning through mid-afternoon. The airline warned that other services between Singapore and Indonesia could also be affected.

Reopening Will Be Only the First Step

The central uncertainty is how quickly reliable service can return. Indonesia’s civil aviation director general, Lukman F. Laisa, warned of cascading disruption to aircraft rotations, fleet availability and terminal capacity. His assessment suggests that reopening airports will begin the recovery rather than immediately restore normal schedules.

Domestic authorities are adjusting operations as conditions change. AirNav Indonesia said its network management centre was tracking ash movement and revising aviation notices in coordination with other agencies. Successive extensions of airport closures underline why a published reopening estimate should not be treated as a confirmed departure time.

The broader implication is a recovery governed by two constraints: safe airspace and the availability of aircraft to move stranded passengers. Travelers connecting through Jakarta or Singapore may therefore encounter disruption even after conditions improve at their immediate departure airport.

International Warnings, Local Consequences

Australia and Canada updated their travel guidance, urging passengers to confirm flights before leaving for airports. Australia also warned that closures could occur at short notice and that ash could impair air quality, particularly for people with respiratory conditions.

Within Indonesia, the consequences extend beyond aviation. Reuters reported interruptions to schooling and fishing, while disaster authorities prepared a weather-modification operation intended to encourage rain and reduce ash fallout. These measures address the immediate disruption; they do not establish a timetable for aviation recovery.

What Affected Travelers Should Do

Confirm the entire itinerary before setting out. Check directly with the operating airline, including onward connections. An earlier screenshot or an airport’s estimated reopening time may no longer reflect operating conditions.

Arrange changes through the original seller. Singapore Airlines customers who booked directly can request rebooking or a refund through its Assistance Request Form. Those who used a travel agent or partner airline should contact that seller. Update contact details in Manage Booking to receive notifications. 

Allow for further changes and follow local ash advisories. Keep onward arrangements flexible where possible. People with asthma or other respiratory conditions should take particular care and follow local health guidance.

Sources: ANTARA, AP, Reuters, Singapore Airlines

September 6, 2026