Temporary removal of Alerts API SMTP delivery option
Identified - Due to a security concern, we have temporarily deactivated the Alerts API SMTP (email) delivery option that is available for testing and evaluation purposes only. To continue testing the Alerts API on either the Flightstats or Sky platforms, please configure delivery to an HTTPS endpoint that accepts POST requests, as per https://developer.cirium.com/apis/cirium-sky-api/flight-alerts. We apologise for any inconvenience and will provide an update as soon as there is progress to report.
Apr 08, 2026 - 15:04 UTC

About This Site

Welcome to our status page where you can see the current status of our products. If you require further assistance please contact us through the Cirium Help Desk.

Diio Mi Operational
SRS Analyzer Operational
Dashboard Operational
Fleets Analyzer Operational
Values Analyzer Operational
Profiles Operational
Asset Watch Operational
Value Trends Operational
Ground Events Operational
Fleet Insights Operational
Pulse Operational
Market Alerts Operational
Schedule Snapshot Operational
Advanced Bookings Operational
Cirium Sky™ APIs Operational
Cirium Sky™ Warehouse Operational
Cirium Sky™ Stream Operational
Proactive & Traveler Services Operational
FlightStats.com Operational
Professional Data Services Operational
Cirium Workbooks Operational
My Cirium Operational
Cirium Journey™ OTP Awards AI Operational
Cirium Journey™ OTP Improvement AI Operational
Cirium Sky™ Schedule Files Operational
Operational
Degraded Performance
Partial Outage
Major Outage
Maintenance

Scheduled Maintenance

Scheduled Maintenance - Trips Data Services - 11th May 2026 May 11, 2026 04:30-08:30 UTC

We will be performing maintenance to our Trip Data Services on Monday, 11th May from 04:30 to 08:30 UTC. During this period, the platform will undergo a series of maintenance tasks and upgrades. No extended downtime is expected, but some unavailability or reduced performance may be experienced during the maintenance window. Please contact our Help Desk if you have any questions.
Posted on May 08, 2026 - 09:16 UTC

Weekly Scheduled Maintenance - Flights Data Processing system May 13, 2026 09:00-11:00 UTC

We will be performing scheduled maintenance of our Flights Data Processing system on Wednesday 13th May from 09:00 to 11:00 UTC. During this period, the system will undergo a series of routine maintenance tasks. Users of services that surface flights data may experience degraded performance or interruptions. Please contact our help desk with any questions.
Posted on Apr 28, 2026 - 13:59 UTC

Weekly Scheduled Maintenance - Flights Data Processing system May 20, 2026 09:00-11:00 UTC

We will be performing scheduled maintenance of our Flights Data Processing system on Wednesday 20th May from 09:00 to 11:00 UTC. During this period, the system will undergo a series of routine maintenance tasks. Users of services that surface flights data may experience degraded performance or interruptions. Please contact our help desk with any questions.
Posted on Apr 28, 2026 - 14:00 UTC

Weekly Scheduled Maintenance - Flights Data Processing system May 27, 2026 09:00-11:00 UTC

We will be performing scheduled maintenance of our Flights Data Processing system on Wednesday 27th May from 09:00 to 11:00 UTC. During this period, the system will undergo a series of routine maintenance tasks. Users of services that surface flights data may experience degraded performance or interruptions. Please contact our help desk with any questions.
Posted on Apr 28, 2026 - 14:01 UTC
May 10, 2026

No incidents reported today.

May 9, 2026
HTTP 503 Errors on FlightStats Flex Historical Flight Status API
Resolved - This incident has been resolved.
May 9, 17:29 UTC
Identified - Our engineers have identified the issue impacting the FlightStats Flex Historical Flight Status API and are actively working toward a resolution. We will continue to share updates here as progress is made. Thank you for your patience, and we apologize for the inconvenience.
May 9, 14:35 UTC
Investigating - We are currently investigating reports of HTTP 503 (Service Unavailable) responses affecting the FlightStats Flex Historical Flight Status API. At this time, the issue appears to be impacting a subset of requests to the historical flight status endpoint. Our engineering teams have been notified and are actively working to identify the cause and restore normal service as quickly as possible. We will provide an update on or before May 9, 2026 at 19:30 UTC, as more information becomes available. Please contact our help desk with any questions. Thank you for your patience.
May 9, 12:45 UTC
May 8, 2026
Degraded Performance – Sky Stream NOTAMs Feed (AWS US‑East‑1)
Resolved - Our NOTAM feed has been fully restored and no other downstream issues have been observed.
May 8, 16:18 UTC
Update - The AWS outage causing an unscheduled data source outage is still active with AWS continuing to work on the issue.
https://health.aws.amazon.com/health/status
May 8, 15:08 UTC
Investigating - We are currently investigating reports of degraded performance affecting the Sky Stream NOTAMs feed, which appears to be related to an AWS service disruption in the US‑East‑1 region. As a result, some customers may notice a reduction in message frequency on the NOTAMs feed. As a precaution, we are also reviewing other Cirium services to assess whether they may be impacted by the same AWS disruption. Our teams are actively monitoring the situation and continuing to investigate. Further updates will be shared as more information becomes available. Thank you for your patience and understanding.
May 8, 08:26 UTC
May 7, 2026

No incidents reported.

May 6, 2026
Planned Quarterly Maintenance – Cirium Sky Warehouse – 6 May 2026
Completed - The scheduled maintenance has been completed.
May 6, 19:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
May 6, 14:00 UTC
Scheduled - Cirium Sky Warehouse will be undergoing maintenance on 06 May 2026 from 14:00 to 19:00 UTC as part of a planned quarterly maintenance window.

During this period, the platform will undergo a series of routine maintenance tasks.

No extended downtime is expected, but some unavailability or reduced performance may be experienced during the period of the maintenance window.

Please feel free to contact us if you have any concerns or questions.
Mar 27, 12:12 UTC
Weekly Scheduled Maintenance - Flights Data Processing system
Completed - The scheduled maintenance has been completed.
May 6, 11:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
May 6, 09:00 UTC
Update - We will be undergoing scheduled maintenance during this time.
May 6, 08:09 UTC
Scheduled - We will be performing scheduled maintenance of our Flights Data Processing system on Wednesday 6th May from 09:00 to 11:00 UTC. During this period, the system will undergo a series of routine maintenance tasks. Users of services that surface flights data may experience degraded performance or interruptions. Please contact our help desk with any questions.
Apr 28, 13:58 UTC
Scheduled Maintenance - My Cirium - Wednesday, 6th May
Completed - The scheduled maintenance has been completed.
May 6, 08:37 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
May 6, 08:00 UTC
Scheduled - There will be a scheduled maintenance window on Wednesday, 6th May from 08:00 to 10:00 UTC. This will impact My Cirium (my.cirium.com). Please expect some downtime during the period of the maintenance window. We will provide an update once the maintenance window has been completed.
May 5, 09:25 UTC
May 5, 2026
Planned Quarterly Maintenance - Cirium Laminar APIs and NOTAM Streams – 05th May 2026
Completed - The scheduled maintenance has been completed.
May 5, 08:30 UTC
Update - We are currently facing some challenges and will extend the maintenance window by 2 hours.

Please feel free to contact us if you have any concerns or questions.
May 5, 06:04 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
May 5, 03:30 UTC
Scheduled - Cirium APIs (Laminar Data Hub), Cirium SKY Laminar APIs and the Cirium Sky Stream NOTAMS feed will be undergoing maintenance, on Tuesday, 05th May 2026, from 03:30 UTC to 06:30 UTC as part of a planned maintenance window.

During this period, the platform will undergo a series of routine maintenance tasks.

No extended downtime is expected, but temporary unavailability or reduced performance may be experienced during the period of the maintenance window.

Please note that the maintenance window might be extended if necessary, and any extensions will be promptly notified.

Please feel free to contact us if you have any concerns or questions.
Apr 10, 12:28 UTC
Scheduled Maintenance - Flightstats Flight Track APIs
Completed - The scheduled maintenance has been completed.
May 5, 05:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
May 5, 04:30 UTC
Scheduled - We will be performing maintenance on our Flightstats-Flight Tracks APIs on Tuesday, 5 May, from 04:30 to 05:00 UTC.

During this period, users can expect up to 30 minutes of downtime.

Please contact our help desk if you have any questions.
May 4, 05:13 UTC
May 4, 2026

No incidents reported.

May 3, 2026
FlightStats.com Service Issue Affecting User Login
Resolved - This incident has been resolved.
May 3, 12:32 UTC
Update - This issue, which impacted user login and access to FlightStats.com, has been resolved, and normal service has been fully restored. All necessary corrective actions have been completed, and the platform is stable following post‑resolution monitoring. We sincerely apologize for the inconvenience this may have caused and would like to thank you for your patience and understanding throughout the incident.
May 3, 12:30 UTC
Update - This issue, which impacted user login and access to FlightStats.com, has been resolved, and normal service has been fully restored. All necessary corrective actions have been completed, and the platform is stable following post‑resolution monitoring. We sincerely apologize for the inconvenience this may have caused and would like to thank you for your patience and understanding throughout the incident.
May 3, 12:24 UTC
Update - Our Engineering team has identified the issue and is actively working on a resolution. Efforts to restore normal login access are ongoing, and we continue to closely monitor the situation. We will provide the next update within the next hour. Thank you for your patience and understanding.
May 3, 11:10 UTC
Identified - The issue has been identified, and a fix is currently being implemented. Our Engineering team is actively working on it, and we will continue to provide updates as they become available. Thank you for your understanding.
May 3, 11:00 UTC
Investigating - We would like to inform you that we are currently experiencing a service issue affecting access to FlightStats.com, which began at approximately 7:02 UTC on 3 May. During this time, customers may encounter difficulties with logging in and resetting passwords.

Our Engineering team is actively investigating the issue and working to determine the root cause. This matter is being treated as a high‑priority incident. We sincerely apologize for the inconvenience this may cause and greatly appreciate your patience as we work to restore full service. We will share the next update on or before 03 May 2026 at 12:26 UTC. Please contact our Help Desk if you have any questions. Thank you for your understanding.
May 3, 08:30 UTC
May 2, 2026

No incidents reported.

May 1, 2026
Cirium products outage
Resolved - We experienced a short access and entitlement service outage today, 1st May, from approximately 11:50 to 12:15 UTC. The outage affected multiple products, including but not limited to Fleets Analyzer, Values Analyzer, and Dashboard. The service has been restored and all products are fully operational. We apologize for any inconvenience caused by the outage. Please contact our help desk with any questions
May 1, 12:45 UTC
Apr 30, 2026
30 April 2026 – Planned Maintenance: Sky Stream Positional Feed
Completed - The scheduled maintenance has been completed.
Apr 30, 17:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Apr 30, 13:00 UTC
Scheduled - We will be performing an upcoming maintenance window scheduled by one of our data providers. As a result, the Sky Stream Positional feed is expected to experience a degraded level of service, with possible intermittent interruptions to the feed during this period. This maintenance is scheduled to take place on 30 April 2026 from 13:00 to 17:00 UTC. Our team will continue to closely monitor the behaviour of the stream and will provide updates should any unexpected issues arise. Thank you for your understanding.
Apr 17, 08:47 UTC
Apr 29, 2026
Weekly Scheduled Maintenance - Flights Data Processing system
Completed - The scheduled maintenance has been completed.
Apr 29, 12:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Apr 29, 10:00 UTC
Scheduled - We will be performing scheduled maintenance of our Flights Data Processing system on Wednesday 29th April from 10:00 to 12:00 UTC. During this period, the system will undergo a series of routine maintenance tasks. Users of services that surface flights data may experience degraded performance or interruptions. Please contact our help desk with any questions.
Mar 24, 17:16 UTC
Apr 28, 2026
Scheduled Quarterly Maintenance - Cirium Sky API Platform - 28th April 2026
Completed - The scheduled maintenance has been completed.
Apr 28, 13:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Apr 28, 09:00 UTC
Scheduled - We will be performing maintenance to the new Cirium Sky API platform on Tuesday 28th April, from 09:00 to 13:00 UTC. During this period, the service will undergo a series of maintenance tasks and upgrades. No extended downtime is expected, but some unavailability or reduced performance of Cirium Sky APIs may be experienced during the maintenance window. This maintenance does not affect the Flightstats (Flex) or Laminar Data Hub API services. Please contact our Help Desk if you have any questions.
Mar 11, 10:58 UTC
Apr 27, 2026
Flight Data Acquisition System Maintenance
Completed - The scheduled maintenance has been completed.
Apr 27, 11:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Apr 27, 09:00 UTC
Scheduled - We will be performing system maintenance on one of our flight data providers. There is a small possibility of a very brief, minor degradation in flight status updates affecting the Cirium Sky Stream system around Monday, 27 April, between 09:00 and 11:00 UTC.
Apr 24, 15:45 UTC
Apr 26, 2026

No incidents reported.

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