ETAEstimated Time of Arrival

ETA — Estimated Time of Arrival

Operations · flight-times · ICAO Doc 4444 (PANS-ATM)

ETAAcronym
EIBTAcronym
Estimated Arrival TimeAlso known as
ReviewedLast verified: 2026-06-24

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:

STAScheduled Time of Arrival (from published schedule)
ETAEstimated Time of Arrival (updated en route)
ATAActual Time of Arrival (recorded when aircraft lands or arrives on stand)
ELDTEstimated Landing Time
ALDTActual Landing Time
EIBTEstimated In-Block Time (when aircraft expected to arrive at stand)
AIBTActual In-Block Time

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

ICAO Doc 4444 (PANS-ATM)
EUROCONTROL A-CDM Implementation Manual

Sources

Last verified: 2026-06-24 · Status: reviewed