Auckland Airport advises holiday-goers travelling over summer to arrive at the airport an additional 30 minutes earlier to avoid congestion.
Over summer, the airport is expecting a 15 per cent increase in international travellers, following recent announcements of new airline alliances and additional routes.
Judy Nicholl, general manager of aeronautical operations, said the airport is gearing up for its busiest 30 days.
Auckland airport issued the warning to ensure operations run smoothly.
Nicholl said passengers can help by allowing 30 minutes extra for venturing through the airport, ensure hand luggage meets airline requirements, complete international departure cards before arriving to customs and making sure all aerosols and liquid containers do not exceed 100ml.