Lisbon LIS to Dublin DUB flight with Ryanair

KLM Cityhopper is the regional airline subsidiary of KLM Royal Dutch Airlines, headquartered in Haarlemmermeer, Netherlands, and based at Amsterdam Airport Schiphol. Established in 1991 from the merger of NLM CityHopper and Netherlines, it operates scheduled European feeder services on behalf of KLM, connecting smaller cities and regional airports to KLM's main hub. As an affiliate of SkyTeam, KLM Cityhopper operates a fleet primarily consisting of Embraer E-Jet aircraft, including the Embraer 175, 190, and E195-E2 models. It serves numerous inter-European destinations, playing a vital role in KLM's regional and international network.

Buzz is a Polish airline, a subsidiary of Ryanair Holdings, headquartered in Warsaw. It operates scheduled flights on behalf of Ryanair and also offers its own charter flights from bases in Poland, Czechia, and Bulgaria. Originally launched by KLM in 1999 as a low-cost carrier, it was acquired by Ryanair in 2003 and ceased operations in 2004. The Buzz name was revived in 2019 when Ryanair rebranded its Polish charter airline, Ryanair Sun, to Buzz. Buzz operates a fleet primarily consisting of Boeing 737 aircraft.

PGA-Portugalia Airlines, also known as PGA, was a regional airline based in Lisbon, Portugal, established in 1988. It began operations in 1990 with an inaugural flight from Lisbon to Porto, initially focusing on domestic routes and limited international charters. PGA expanded its network to include scheduled international flights across Europe and North Africa, serving countries like France, Germany, Italy, Morocco, and Spain. Renowned for its high levels of service, PGA received numerous awards, including \Best European Regional Airline.\" In 2006, TAP Air Portugal Group acquired a majority stake in PGA, making it a regional subsidiary. In 2016, the PGA Portugalia name was retired, and the airline was rebranded as TAP Express, with its fleet replaced by Embraer E190s and ATR 72-600s. As of 2022, PGA Portugalia Airlines was fully integrated into TAP Portugal."