LexisNexis Cirium incident

HTTP 503 Errors on FlightStats Flex Historical Flight Status API

Critical Ongoing View vendor source →

LexisNexis Cirium is currently experiencing a critical incident affecting Cirium Sky™ APIs, which began 1h ago. The vendor's full update timeline is below.

Started
May 09, 2026, 12:45 PM UTC
Resolved
Ongoing
Duration
● 1h 11m
Detected by Pingoru
May 09, 2026, 12:45 PM UTC

Affected components

Cirium Sky™ APIs

Update timeline

  1. investigating May 09, 2026, 12:45 PM UTC

    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 15:30 UTC, as more information becomes available. Thank you for your patience.