A general-admission adult ticket to an AFL game will cost $20 for the fourth successive year, the league announced on Friday.

Concession tickets will cost $12.00, junior under-15 tickets are priced at $2.50 and family tickets are $40.

AFL commercial operations general manager Darren Birch said the AFL wanted to keep general-admission prices as affordable as possible.

The season opens on March 22 when Adelaide host Essendon at AAMI Stadium.