Alerts API Degraded Performance
Investigating - We are investigating reports of missing alerts from the Alerts API service from approximately 18:18 UTC today on 2026-04-14. We will provide another update by 1:47 AM UTC on 2026-04-15.
Apr 14, 2026 - 21:53 UTC
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
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Cirium Sky™ APIs Degraded Performance
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Operational
Degraded Performance
Partial Outage
Major Outage
Maintenance

Scheduled Maintenance

Weekly Scheduled Maintenance - Flights Data Processing system Apr 15, 2026 10:00-12:00 UTC

We will be performing scheduled maintenance of our Flights Data Processing system on Wednesday 15th 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.
Posted on Mar 24, 2026 - 17:14 UTC

Weekly Scheduled Maintenance - Flights Data Processing system Apr 22, 2026 10:00-12:00 UTC

We will be performing scheduled maintenance of our Flights Data Processing system on Wednesday 22nd 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.
Posted on Mar 24, 2026 - 17:15 UTC

Scheduled Quarterly Maintenance - Cirium Sky API Platform - 28th April 2026 Apr 28, 2026 09:00-13:00 UTC

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.
Posted on Mar 11, 2026 - 10:58 UTC

Weekly Scheduled Maintenance - Flights Data Processing system Apr 29, 2026 10:00-12:00 UTC

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.
Posted on Mar 24, 2026 - 17:16 UTC

Planned Quarterly Maintenance - Cirium Laminar APIs and NOTAM Streams – 05th May 2026 May 5, 2026 03:30-06:30 UTC

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.
Posted on Apr 10, 2026 - 12:28 UTC

Planned Quarterly Maintenance – Cirium Sky Warehouse – 6 May 2026 May 6, 2026 14:00-19:00 UTC

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.
Posted on Mar 27, 2026 - 12:12 UTC
Apr 14, 2026
Potential failure of Fleets data publishing
Resolved - Our engineers have successfully completed the fleets data update. The latest data will be applied to all affected products as per their individual update schedules. An internal RCA will be carried out to understand the cause(s) of today's and yesterday's incidents, and steps put in place to enhance platform resilience.
Apr 14, 11:41 UTC
Investigating - We’re currently experiencing degraded performance issues affecting all products where fleets data is surfaced, including, but not limited to Fleets Analyzer and Cirium Sky™ Warehouse. It appears that data was not published overnight on Monday, 13th April, resulting in stale data in all affected services. The issue has also meant that no news articles have been published in Dashboard or Pulse since midnight (UTC). Our engineers are working to restore the affected services and address the underlying cause. We sincerely apologize for any inconvenience caused. The next update will be posted on or before 12:25 UTC.
Apr 14, 08:27 UTC
Schedule Snapshot temporarily unavailable
Resolved - The incident has been resolved and the service is performing as expected.
Apr 14, 11:02 UTC
Investigating - We are investigating an issue affecting the Schedule Snapshot platform. The service returning a server error response. We apologize for any inconvenience caused. The next update will be posted on or before 13:30 UTC.
Apr 14, 09:29 UTC
Apr 13, 2026
No new content published to Dashboard and Pulse on 13th April 2026
Resolved - This incident has been resolved.
Apr 13, 11:57 UTC
Monitoring - New articles are now appearing. We are continuing to investigate the cause and are monitoring performance closely.
Apr 13, 10:41 UTC
Investigating - We are investigating an issue that is preventing the publication of new articles on the Dashboard and Pulse platforms. We apologise for any inconvenience and will provide an update no later than 16:30 UTC.
Apr 13, 08:31 UTC
Fleets and Values Analyzer Auto-Suggest not working
Resolved - This incident has been resolved.
Apr 13, 11:57 UTC
Monitoring - Auto-suggest is now working. We will continue to monitor for a period before considering this incident resolved.
Apr 13, 11:12 UTC
Investigating - We’re currently experiencing degraded performance issues with Fleets and Values Analyzer. In both services, auto-suggest is not working. In Fleets Analyzer, users can work around the issue by using the Filter menu. In Values Analyzer, there is no workaround to create a new generic or specific valuation. Our engineers are working to restore normal performance levels. We apologize for any inconvenience caused. The next update will be posted on or before 14:20 UTC.
Apr 13, 10:20 UTC
No fleets aircraft data published on Sunday, 12th April.
Resolved - This incident has been resolved. We have successfully refreshed the fleets data and this update will flow through to Fleets Analyzer and Cirium Sky™ Warehouse.
Apr 13, 11:56 UTC
Investigating - We’re currently experiencing degraded performance issues with Fleets Analyzer and the Fleets tables in Cirium Sky™ Warehouse. No data was published on Sunday, 12th April, resulting in stale data in both services. Our engineers are investigating. We apologize for any inconvenience caused. The next update will be posted on or before 14:25 UTC.
Apr 13, 10:26 UTC
Apr 12, 2026

No incidents reported.

Apr 11, 2026

No incidents reported.

Apr 10, 2026
Alerts API Degraded Performance
Resolved - The issue causing degraded performance on the Alerts API has been resolved. Our alert service was fully restored as of 2026‑04‑10 at 18:00 UTC and alerts are now delivering successfully. We are continuing to monitor the system and plan to deploy an additional system change next week to help prevent similar occurrences in the future. Our apologies for the inconvenience. Please contact our Help Desk with any questions.
Apr 10, 18:17 UTC
Investigating - We are investigating reports of missing alerts from the Alerts API. The incident began on 2026-04-10 at 15:18 UTC. Further updates will be shared as available.
Apr 10, 17:08 UTC
Apr 9, 2026
Fleets Analyzer - missing March 2026 Tracked Utilisation and Emissions data
Resolved - March 2026 tracked utilisation and emissions data has been uploaded to Fleets Analyzer. Thank you for your patience.
Apr 9, 07:57 UTC
Investigating - We are currently investigating a Fleets Analyzer issue that has affected the March 2026 tracked utilisation and optional emissions data updates. The affected data is currently available up to and including February 2026. We apologise for any inconvenience caused and will post a further update no later than 09:00 UTC, 9th April.
Apr 8, 09:09 UTC
Apr 8, 2026
Alerts API Degraded Performance
Resolved - Alerts API customers may have experienced degraded performance beginning at 15:00 UTC today on 2026-04-08. A fix has been applied and alert generation was restored as of 16:27 UTC on 2026-04-08. We are monitoring the system to ensure continued stability. Please contact our Help Desk with any questions.
Apr 8, 16:42 UTC
Scheduled Quarterly Maintenance – Cirium Sky™ Stream
Completed - The scheduled maintenance has been completed.
Apr 8, 13:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Apr 8, 08:00 UTC
Scheduled - We will be performing maintenance on Cirium Sky™ Stream on Wednesday, 8th April from 08:00 to 13:00 UTC. During this period, the platforms will undergo a series of maintenance tasks and upgrades. Customers may experience latency or downtime during the maintenance window. Please contact our Help Desk if you have any questions.
Mar 6, 14:50 UTC
Weekly Scheduled Maintenance - Flights Data Processing system
Completed - The scheduled maintenance has been completed.
Apr 8, 12:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Apr 8, 10:00 UTC
Scheduled - We will be performing scheduled maintenance of our Flights Data Processing system on Wednesday 8th 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, 17:12 UTC
Investigating issues with Flight Track APIs
Resolved - The issue was identified and fixed. This incident has been resolved.
Apr 8, 06:55 UTC
Investigating - We are investigating an issue with Developer Flightstats - Flight Track APIs. We are currently experiencing no response from server.

We apologies for any inconvenience caused and will post a further update no later than 8th April 2026, 08:37 UTC.
Apr 8, 04:41 UTC
Apr 7, 2026
Investigating issues with Fleets Analyzer - Aircraft - Summary
Resolved - This incident has been resolved.
Apr 7, 08:06 UTC
Identified - We are currently addressing an issue on the Summary tab where some figures were overstated. A temporary fix has been applied to ensure the Summary now reflects the correct values.

The team is working on a permanent resolution, which is targeted for completion by Wednesday end of day next week.

Additionally, we have identified a related issue on the Summary page where the Total Indicative Market Value (US$M) is not being displayed in million‑dollar terms on the UI grid. This will also be addressed, with a targeted resolution planned for the following week.

We will continue to provide updates as progress is made.
Mar 27, 07:38 UTC
Update - We are continuing to investigate the issue causing overstated aircraft counts in Fleets Analyzer under Aircraft Summary. Detail and Trend tabs remain unaffected. A further update will be provided no later than 27th March at 09:00 UTC. Please contact our Help Desk with any questions.
Mar 27, 01:06 UTC
Investigating - We are investigating an issue with Fleets Analyzer - Aircraft - Summary returning overstated aircraft counts. The Detail and Trend tabs are unaffected. We apologise for any inconvenience caused and will post a further update no later than 27th March, 01:00 UTC.
Mar 26, 16:55 UTC
Apr 6, 2026

No incidents reported.

Apr 5, 2026

No incidents reported.

Apr 4, 2026

No incidents reported.

Apr 3, 2026

No incidents reported.

Apr 2, 2026
Missing Alerts from the Alerts API
Resolved - We’re pleased to confirm that this issue has now been resolved. Our engineering team identified and removed a number of invalid alert rule IDs, and the system is now operating as expected. We’ll continue to monitor performance closely to ensure ongoing stability. If you have any questions or notice anything unexpected, please don’t hesitate to contact our Help Desk.
Apr 2, 09:09 UTC
Update - We have identified the root cause of the issue and are actively working on a resolution. We will provide another update by 09:11 UTC on 2026-04-02. Thank you for your ongoing patience.
Apr 2, 05:10 UTC
Update - We have identified the root cause of the issue and are actively working on a resolution. We will provide another update by 05:11 UTC on 2026-04-02. Thank you for your ongoing patience.
Apr 2, 01:08 UTC
Identified - We have identified the root cause of the issue and are actively working on a resolution. We will provide another update by 01:11 UTC on 2026-04-02. Thank you for your ongoing patience.
Apr 1, 21:11 UTC
Investigating - We are currently investigating reports of missing alerts from the Alerts API and will provide updates as available.
Apr 1, 17:22 UTC
Apr 1, 2026
Weekly Scheduled Maintenance - Flights Data Processing system
Completed - The scheduled maintenance has been completed.
Apr 1, 12:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Apr 1, 10:00 UTC
Scheduled - We will be performing scheduled maintenance of our Flights Data Processing system on Wednesday 1st 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, 17:12 UTC
Scheduled Maintenance - My Cirium - 1st April 2026
Completed - The scheduled maintenance has been completed.
Apr 1, 10:20 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Apr 1, 09:00 UTC
Scheduled - There will be a scheduled maintenance window on Wednesday, 1st April, from 11:00 to 13:00 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.
Mar 30, 10:51 UTC
Scheduled Maintenance - Trips Data Services - 1st April 2026
Completed - The scheduled maintenance has been completed.
Apr 1, 08:30 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Apr 1, 05:00 UTC
Scheduled - We will be performing maintenance to our Trip Data Services on Wednesday, 1st April, from 05:00 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.
Mar 31, 09:22 UTC
Mar 31, 2026

No incidents reported.

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