Sofia Airport serves as a base for an Irish low-cost airline founded in what year?
Sofia Airport: Sofia Airport (IATA: SOF, ICAO: LBSF) (Bulgarian: Летище София, "Letishte Sofiya" ) is the main international airport of Bulgaria located 10 km east from the centre of the capital city Sofia. Sofia Airport:  The airport serves as the home base for BH Air, Bulgaria Air, and Bulgarian Air Charter and as a base for both Ryanair and Wizz Air. Ryanair: Ryanair Ltd. (/raɪə'ner/) is an Irish low-cost airline founded in 1984, headquartered in Swords, Dublin, Ireland, with its primary operational bases at Dublin and London Stansted airports.
1984