Astrid Båhl was born in 1959 in Karesuando, Norrbotten County, Sweden, and she moved as a child to Skibotn, Storfjord Municipality, Troms County, Norway. She studied art education in secondary school in Narvik, and continued her training at the Norwegian National Academy of Craft and Art Industry in Oslo, where she studied textile printing, graphic design, and freehand drawing. Båhl has exhibited her work in several exhibitions, including "Mijjen luunie – Kums oss" a South Sami mobile exhibition in 1994, and "ČSV- å visualisere Sápmi" on Jeløya in 2006.
In 1986, she won a competition to design a flag for the Sami people, beating over 70 other entries. The flag was officially adopted and raised for the first time at the 13th Sámi Conference in Åre, Sweden on 15 August 1986. According to Båhl, the flag symbolizes that the sun gives life to the earth. In her design, Båhl looked for inspiration to old writings and books about Sami languages, mythology, and symbolism.
- Nedredal, Sigve; Sara, Heidi (11 June 2009). "Sameflaggets mor fylte 50" [Sami flag's mother turns 50]. NRK (in Norwegian). Retrieved 19 July 2017.
- Figenschau, Maria (12 February 2013). "Astrid Båhl". Storfjord kommune (in Norwegian).
- Aslaksen, Eilif (3 February 2009). "Sameflaggets mor" [Sami flag's mother]. NRK (in Norwegian).
- Båhl, Edith (27 September 2006). "Samisk flagg" [Sami flag]. Tre stammers møte (in Norwegian).
- "Tråante 2017 – frimerkene" [Trondheim 2017 – stamps]. Tråante 2017 (in Norwegian). 25 January 2017.