ETA — Estimated Time of Arrival
Operations · flight-times · ICAO Doc 4444 (PANS-ATM)
Definition
ETA (Estimated Time of Arrival) is the current best estimate of when an aircraft will touch down or arrive on stand at the destination airport. It updates continuously based on actual departure time, airspeed, wind and routing, and is distinct from the scheduled arrival time (STA).
ETA — Estimated Time of Arrival
ETA is the arrival equivalent of ETD. It is a continuously updated estimate used by airport operations, ground handlers, connecting passenger management teams and passengers awaiting arrivals.
Arrival Time Sequence
Key arrival time codes:
Operational Impact of ETA
ETA affects: baggage claim belt assignment and activation timing, ground handling resource scheduling (steps, buses, cleaning), connecting passenger management — is there time to make the connection?, arrivals FIDS display and gate change management.
ETA Data Sources
ETA is initially calculated from the filed flight plan. Once airborne, it is updated from ATC radar data and ACARS position reports. Modern flight tracking services (Flightradar24, Cirium, OAG) provide ETA estimates to airports, airlines and third-party systems.
Related Terms
Standards & References
Sources
Last verified: 2026-06-24 · Status: reviewed