Three Honolulu post offices — airport, Ala Moana  and Mililani — will open Sunday  to handle increased holiday Christmas mailings.

The Sunday hours for the post offices located near the Honolulu Airport, in Ala Moana Center and Mililani will be from 10 a.m. to 4 p.m. The same three postal locations will operate at the same hours the following Sunday, Dec. 14.

The Mililani and Waialae-Kahala Post Offices also will have extended weekday hours from Dec. 8 to Dec. 19 to 7 p.m. The Waialae-Kahala post office normally closes at 4:30 p.m., Mililani at 5 p.m.