Each airport's share is its passengers as a percentage of all Australian airport passengers in the same market and period. The chart shows the change in that share between 2019 and 2026 in percentage points. A smaller share while passenger numbers grow reflects growth spreading across more airports, not a decline.
This traces where national passenger growth landed. It does not establish where the passengers came from, and it takes no position on airport capacity, caps or curfews. The comparison cards split each airport's passenger change into a part from aircraft movements and a part from passengers per movement; passengers per movement can rise through larger or fuller aircraft, which this data cannot separate.
Audited BITRE airport passenger and aircraft-movement data, rolling years ending March 2010 to 2026. An aircraft movement is one take-off or landing. Domestic covers Regular Public Transport including regional, counted at both airports, so figures represent airport activity rather than unique travellers. Directional analysis, not a forecast. Figures current to the year ending March 2026 and updated manually at each BITRE release.