Dublin DUB to Porto OPO flight with Ryanair

Transavia France is a French low-cost airline established in 2006 and is part of the Air France-KLM group. It operates scheduled and charter flights primarily to leisure and metropolitan destinations across Europe and North Africa. The airline shares its corporate design, website, and operating model with its Dutch counterpart, Transavia. With its main base at Paris-Orly Airport, Transavia France has expanded to include bases in Marseille, Lyon, Nantes, Montpellier, and Bordeaux. It operates with a single-class cabin and a fleet of Boeing 737 aircraft, with plans to transition to the Airbus A320neo family.

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.

Airhub Airlines is a Maltese-based charter and cargo airline that specializes in ACMI (Aircraft, Crew, Maintenance, and Insurance) leasing services. Founded in November 2019, the airline commenced operations in August 2020. It is a sister company to GetJet Airlines and is part of the Airhub Aviation group. Airhub Airlines conducts charter and cargo flights globally, utilizing its own, leased, or operated aircraft for other companies. The airline's fleet, as of April 2025, consists of Airbus A320-200 and Airbus A330-900 aircraft.

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."

GetJet Airlines is a Lithuanian-based airline established in 2016, specializing in Aircraft, Crew, Maintenance, and Insurance (ACMI) services, passenger charter, and air cargo operations. They provide flexible aviation solutions to other airlines and tour operators globally, helping them manage seasonal demand or cover unscheduled maintenance. GetJet Airlines operates a fleet that includes Airbus A320, A321, A330, and Boeing 737 aircraft. They have served clients such as Norwegian Air Shuttle, Finnair, LOT Polish Airlines, and TUI. In 2019, GetJet Airlines became the first Lithuanian airline to operate transatlantic flights to North America.