South Korea Flight Disruption Alert 2026: 10 Air Seoul Flights Cancelled Across Incheon, Gimpo, and Jeju

Quick Summary

• Total Cancellations: 10 flights reported across Air Seoul’s domestic and international network.
• International Hub: Incheon International (ICN) recorded two cancelled rotations to Guam (ASV101).
• Domestic Corridor: Gimpo (GMP) and Jeju (CJU) hubs were hit by multiple cancellations on the world’s busiest domestic route.
• Fleet Impact: All affected services were scheduled to operate using Airbus A321 aircraft.
• International Route: Repeated suspensions on the Seoul–Guam sector over consecutive days (Wed/Thu).
• Operational Pattern: High-frequency back-to-back rotations between Seoul and Jeju were removed from the morning and evening schedules.
• Source: Air Seoul operational updates and South Korean Airport Authority reports as of May 7, 2026.

South Korea’s aviation network is navigating a localized operational crisis as Air Seoul has cancelled 10 scheduled flights across the country’s most vital domestic and international corridors. Released on May 7, 2026, the latest travel alert identifies Incheon, Gimpo, and Jeju as the primary points of disruption, with multiple Airbus A321 services grounded. The cancellations have disproportionately impacted the world’s busiest domestic route, Seoul–Jeju, while also suspending critical international rotations to Guam. As travelers face long rebooking queues at Gimpo International Airport and uncertainty at Incheon, the incident highlights the systemic vulnerability of regional low-cost carriers (LCCs) when operating under tight aircraft rotation and high utilization demands. Passengers traveling through these hubs are being advised to monitor real-time updates and prepare for potential schedule adjustments through the end of the week.

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Full List of Air Seoul Flight Cancellations (May 7, 2026)

The following table summarizes the 10 cancellations recorded across Air Seoul's South Korean and international network.

Flight Number	Route	Scheduled Departure	Aircraft Type
ASV101	Incheon – Guam	Wed 07:25 PM KST	Airbus A321
ASV101	Incheon – Guam	Thu 07:25 PM KST	Airbus A321
ASV901	Gimpo – Jeju	Thu 06:00 AM KST	Airbus A321
ASV903	Gimpo – Jeju	Thu 09:45 AM KST	Airbus A321
ASV905	Gimpo – Jeju	Thu 01:45 PM KST	Airbus A321
ASV907	Gimpo – Jeju	Thu 06:15 PM KST	Airbus A321
ASV902	Jeju – Gimpo	Thu 07:55 AM KST	Airbus A321
ASV904	Jeju – Gimpo	Thu 11:55 AM KST	Airbus A321
ASV906	Jeju – Gimpo	Thu 03:55 PM KST	Airbus A321
ASV908	Jeju – Gimpo	Thu 08:50 PM KST	Airbus A321

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International Setback: Air Seoul Suspends Guam Services from Incheon

The cancellation of international services to Guam has disrupted holiday plans for hundreds of travelers:

• Consecutive Failures: The suspension of Flight ASV101 on both Wednesday and Thursday evenings indicates a recurring operational challenge on the Incheon–Guam sector.
• Tourism Impact: Guam is a primary destination for South Korean families; repeated cancellations have left many stranded at Incheon or forced to seek expensive last-minute alternatives.
• Rescheduling: Air Seoul is attempting to rebook international passengers, but limited capacity on competitor flights is constraining options.

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Domestic Corridor Crisis: Multiple Gimpo–Jeju Flights Grounded

The world’s busiest domestic aviation route is facing significant frequency reductions:

• Gimpo (GMP) Disruptions: Four departures from Seoul’s domestic hub to Jeju were removed from the Thursday schedule.
• Timing Impact: The cancellations spanned from 6:00 AM to 6:15 PM, impacting morning business commuters and leisure travelers alike.
• Systemic Ripple: Because of the high-frequency nature of the Seoul–Jeju corridor, the loss of these rotations has created a backlog of passengers at Gimpo terminals.

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Return Leg Disruptions: Cancellations at Jeju International Airport

Inbound services to Seoul were equally affected, stranding travelers on Jeju Island:

• CJU Hub Alert: Four return flights from Jeju to Gimpo were cancelled throughout Thursday.
• Late-Night Impact: The cancellation of ASV908 at 8:50 PM is particularly significant for travelers planning to return to the capital after a day-trip or business meeting.
• Ground Ops: Jeju International is managing increased congestion as passengers await rebooking or hotel accommodation assistance.

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Operational Analysis: Fleet Pressure and Airbus A321 Rotation Issues

The pattern of cancellations suggests a localized technical or logistical challenge within the Air Seoul fleet:

• Single-Fleet Sensitivity: All 10 cancellations involved the Airbus A321. This indicates that a technical grounded aircraft or crew shortages on this specific type could be the primary cause.
• Rotation Cascades: In the LCC model, a delay in one international rotation (like Guam) can quickly lead to multiple cancellations on domestic high-frequency legs.
• Utilization: High aircraft utilization during South Korea's travel recovery period leaves little room for unscheduled maintenance or crew-duty-hour overruns.

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Impact on Leisure Travel: Guam and Jeju Vacation Interruptions

The timing of these disruptions hits two of South Korea's most important vacation flows:

• Family Travel: Guam is a leading destination for multi-generational travel, where cancellations cause significant logistical and financial strain on families.
• Jeju Resilience: While other carriers operate the Jeju route, Air Seoul's cancellations have reduced total seat capacity, making it difficult for passengers to find same-day alternatives.
• Business Commuters: Early-morning Gimpo–Jeju flights are heavily used by business professionals, who face lost productivity due to the suspensions.

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Gimpo and Incheon Hub Status: Managing Passenger Backlogs and Rebookings

South Korea's primary gateways are working to stabilize passenger flows:

• Terminal Congestion: Gimpo Airport domestic terminals are seeing increased density around LCC check-in counters.
• Incheon Transit: Incheon International is monitoring the situation for Guam-bound travelers, though most impact remains at the point of departure.
• Passenger Support: Travelers are urged to reconfirm their flight status via the Air Seoul website or mobile app before departing for the airport.

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Conclusion: Resilience and Risk Management in South Korea’s Aviation Sector

The May 7, 2026, aviation alert confirms that South Korea’s domestic and international connectivity is currently facing a targeted disruption within the Air Seoul network. With 10 cancellations concentrated on the vital Seoul–Jeju and Seoul–Guam corridors, the impact on both business and leisure travel is significant. The involvement of the Airbus A321 fleet across all cancelled rotations suggests that the airline is managing localized technical or scheduling constraints. As Air Seoul works to clear the passenger backlog and restore its high-frequency schedule, travelers are being advised to prioritize flexible bookings and maintain a high level of vigilance regarding flight status. The current instability highlights the ongoing need for operational resilience as South Korea’s aviation industry continues its robust post-recovery growth phase.

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FAQ: South Korea Flight Disruptions May 2026

How many flights did Air Seoul cancel on May 7, 2026? A total of 10 domestic and international flights were cancelled, including routes to Jeju and Guam.

Which routes are most affected by the cancellations? The most affected routes are the high-frequency Gimpo–Jeju domestic corridor and the Incheon–Guam international sector.

What aircraft type was involved in these cancellations? All 10 cancellations involved the Air Seoul Airbus A321 fleet.

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Related South Korean Travel Alerts

• Seoul–Jeju Corridor: Navigating the World’s Busiest Air Route During Delays
• Guam Travel Update: Alternative Carriers and Rebooking Strategies 2026
• LCC Operational Resilience: Managing Disruption in South Korea’s Aviation Hubs

Disclaimer: All flight cancellation statistics and hub data are manually obtained from Air Seoul and South Korean Airport Authority operational reports as of May 7, 2026.