Hi Everyone, we have updated this article (keeping the original article below for reference on the difference).
Update as of Jan 30, 2018
The 380 Airporter runs from Manukau City Centre via Papatoetoe train Station to the Auckland Airport. Buses run 7 days a week, 365 days a year, approx every 15minutes during the day.
Manukau - Airport: First bus 4.15am, last bus 10.45pm
Airport - Manukau: First bus 5.00am, last bus 11.30pm
If you are travelling on a Naked Bus, Intercity or Newmans service, you can also catch the 380 to the airport from Manukau City Centre where there is a connection point.
Tickets
Tickets are available from the bus driver. From Manukau City Centre to the airport the fare is $4.30 one way for an adult.
Naked Bus passengers can buy tickets online for their journey to the Airport - visit
www.nakedbus.com to book.
It takes approximately 25-40 minutes to get from Manukau City to airport using this service (traffic depending).
Train-Bus Connection to Auckland Airport (via Papatoetoe Train Station)
You can catch a train from anywhere along the Southern or Eastern Lines and connect at Papatoetoe Train Station with the 380 Airporter bus to the airport. From Papatoetoe to the airport it takes around 25 minutes travelling time - please factor in any connection time when you plan your journey.
Trains run between approx 5am - 10pm with later evening services on Fridays.
View Timetables below:
Southern Line timetable Eastern Line timetable Route 380 timetable
Source.
Official data source:
Old article below ( dated 9/30/2010):
The 380 Airporter runs from Manukau City Centre via Papatoetoe train Station to the Auckland Airport Retail Centre. Buses run 7 days a week, 365 days a year, and up to every 30 minutes during the day.
Manukau - Airport: First bus 4.15am, last bus 10.45pm
Airport - Manukau: First bus 5.00am, last bus 11.30pm
If you are travelling on a Naked Bus, Intercity or Newmans service, you can also catch the 380 to the airport from Manukau City Centre where there is a connection point.
Tickets
Tickets are available from the bus driver. From Manukau City Centre to the airport the fare is $4.30 one way for an adult.
Naked Bus passengers can buy tickets online for their journey to the Airport - visit
www.nakedbus.com to book.
It takes approximately 25-40 minutes to get from Manukau City to airport using this service (traffic depending).
Train-Bus Connection to Auckland Airport (via Papatoetoe Train Station)
You can catch a train from anywhere along the Southern or Eastern Lines and connect at Papatoetoe Train Station with the 380 Airporter bus to the airport. From Papatoetoe to the airport it takes around 25 minutes travelling time - please factor in any connection time when you plan your journey.
Trains run between approx 5am - 10pm with later evening services on Fridays.
View Timetables below:
Southern Line timetable Eastern Line timetable Route 380 timetable
Source.
Patented translucency technology makes this line the nearest thing to clear and invisible. 
