Definition
A commercially published reference that lists scheduled airline flights worldwide, including departure and arrival times, airports served, aircraft types, flight numbers, and connecting service information. The OAG is used by airlines, dispatchers, travel professionals, and pilots as an authoritative source of scheduled air service data.
Plain English
A widely-used published guide that shows when and where scheduled airline flights operate around the world.
Context Anchor
Seen in FAA acronym lists and in airline, dispatch, or travel-planning contexts where scheduled airline service is being referenced.
Derivation
From 'official' (the recognized, authoritative version), 'airline' (companies operating scheduled flights), and 'guide' (a reference publication). The name describes exactly what it is: a recognized reference covering scheduled airline service.
Why Pilots Care
Pilots flying for airlines or operating into busy airline-served airports may use OAG data to understand scheduled traffic patterns, plan around peak periods, or identify connecting service for crew or passengers.
Intuition Check
Do not read “official” as meaning an FAA clearance, rule, or approval. Here, OAG refers to a schedule guide for airline service information.
Example Sentence 1
The dispatcher checked the OAG to confirm the next available scheduled flight from Denver to Chicago.
Example Sentence 2
Flight connections were verified against the latest OAG before filing the flight plan.