Airlines Aero was a regional airline based in Tallinn, Estonia. It operated services between three Finnish destinations, as well as international flights to Tallinn. All of their flights were operated under Finnair's designation AY. Its main bases were Helsinki-Vantaa and Tallinn-Lennart Meri. Aero ceased its operations in January 2008.
The name harkens back to Aero Airlines's and Finnair's first incarnation, Aero AS, founded in 1923. Finnair retained Aero AS's IATA designator AY, while new Aero Airlines flew as EE. The airline was re-established in 2000, and started operations in March 2002, within the Baltic region. It was owned by Aero Holding (51%) and Finnair (49%), was the ownership was later transferred wholly to Finnair. Aero had 128 employees (at March 2007).
Aero scaled down its operations during 2007, and finally flew its last flight on 6 January 2008. All its former routes are now operated by Flybe and Finnair.
The IATA code (EE) and call-sign (REVAL) have been re-used by Nordica, which began operations at the end of 2015.
Aero Airlines operated services to the following scheduled destinations (at December 2007): Helsinki, Tallinn, Turku and Vaasa.
The Aero Airlines fleet consisted of ATR-72-201 airplanes, which were formerly operated by its parent company Finnair. The last two were sold to UTair when Aero ceased its operations.