The Flag of the Azores (Portuguese: Bandeira dos Açores) is the regional flag of the Portuguese Autonomous Region of the Azores. It is a rectangular bicolour with a field unevenly divided into blue on the hoist, and white on the fly. It was established on the 10th April 1979 by the Regional Assembly of the Azores, being based in the National Flag of Portugal used between 1830 and 1910.
Source: Wikipedia