Flynn stood as a candidate for the
Labour Panel in the
2020 Seanad election but missed out by a very narrow margin. On 28 June 2020, she became a senator after being
nominated by the Taoiseach, and in doing so became the first-ever Traveller to be a member of the
Oireachtas.
Pavee Point, the Traveller Advocacy organisation, hailed her appointment to the Seanad as "historic", as did the
National Women's Council of Ireland.
David Norris, the longest-serving member of the Senate, called her nomination a significant advance. Flynn stated her objectives in the Seanad will be "mental health services, unemployment among Travellers, opportunities for minority groups and getting hate-crime legislation enacted". In November 2020, Flynn was elected as chairperson of the Joint Oireachtas Committee on Key Issues affecting the Traveller Community. In 2022, Flynn tabled a bill in the Seanad to replace the term "child pornography" with "child sexual exploitation material" in legislation, stating that the term "does not truly reflect the nature of the abuse". At the
2025 Seanad election, she was elected for the
Administrative Panel. In 2026, Flynn commented that she would not attend protests where the
Irish tricolour flag was being flown, because it was a symbol that was being exploited by the far-right. Following this she was subject to days of online abuse, mostly posted by accounts that post anti-immigration content and also right-wing influencers. ==Awards==