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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Dashboard Operational
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Profiles Operational
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Value Trends Operational
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Proactive & Traveler Services Operational
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Professional Data Services Operational
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Operational
Degraded Performance
Partial Outage
Major Outage
Maintenance

Scheduled Maintenance

Scheduled Maintenance - Flightstats API Platform - 18th May 2026 May 19, 2026 05:30-06:00 UTC

We will be performing maintenance to the Flightstats API platform on Tuesday, 19th May, from 05:30 to 06:00 UTC. During this period, the service will undergo a series of important upgrades. No downtime is expected, however some latency may be experienced, affecting the following:

Airports
Delay Index
FIDS
Weather
Data Drop

Please contact our Help Desk if you have any questions.
Posted on May 18, 2026 - 09:15 UTC

Scheduled Maintenance - PDS Fleets & Values API Web Services May 19, 2026 11:00-13:00 UTC

We will be performing scheduled maintenance of our PDS Fleets & Values API Web services on Tuesday, 19th May from 11:00 to 13:00 UTC. During this period, the system will undergo a series of routine maintenance tasks. Users of these API services that surface Fleets or Values data may experience degraded performance or interruptions. Please contact our Help Desk with any questions.
Posted on May 15, 2026 - 01:05 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

Unscheduled Maintenance - Cirium Sky Stream - 20th May 2026 May 20, 2026 09:00-10:00 UTC

There will be an unplanned maintenance window for the Cirium Sky Stream on Wednesday 20th May from 09:00 to 10:00 UTC to carry out essential security updates. During this maintenance window, parts of the Sky Stream service may experience intermittent interruptions. We do not expect any data loss, and all efforts will be made to minimise customer impact. Thank you for your understanding. Please contact our Help Desk with any questions.
Posted on May 12, 2026 - 13:32 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 18, 2026

No incidents reported today.

May 17, 2026

No incidents reported.

May 16, 2026

No incidents reported.

May 15, 2026

No incidents reported.

May 14, 2026

No incidents reported.

May 13, 2026
Weekly Scheduled Maintenance - Flights Data Processing system
Completed - The scheduled maintenance has been completed.
May 13, 11:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
May 13, 09:00 UTC
Scheduled - 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.
Apr 28, 13:59 UTC
Scheduled Maintenance - Trips Data Services - 13th May 2026
Completed - The scheduled maintenance has been completed.
May 13, 08:30 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
May 13, 04:30 UTC
Scheduled - We will be performing maintenance to our Trip Data Services on 13th 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.
May 12, 14:02 UTC
May 12, 2026

No incidents reported.

May 11, 2026
Scheduled Maintenance - Trips Data Services - 11th May 2026
Completed - The scheduled maintenance has been completed.
May 11, 08:30 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
May 11, 04:30 UTC
Scheduled - 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.
May 8, 09:16 UTC
May 10, 2026

No incidents reported.

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.

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