Paris PAR to Tallinn TLL flight with Lot Polish Airlines

Lufthansa CityLine is a German regional airline and a wholly-owned subsidiary of Deutsche Lufthansa AG, operating as part of the Lufthansa Regional concept. Headquartered at Munich Airport, with hubs also at Frankfurt Airport, it operates a dense domestic and European network on behalf of its parent company. The airline primarily uses regional jets like the Bombardier CRJ900, along with Airbus A319s and A320neos, to connect smaller European cities to Lufthansa's major hubs. Lufthansa CityLine is known for its reliability in providing feeder traffic to Frankfurt and Munich.

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.

CityJet is an Irish regional airline headquartered in Dublin, Ireland. Founded in 1992, it began operations in 1994, initially flying between Dublin and London City Airport under a franchise agreement with Virgin Atlantic. CityJet transitioned its business model in 2018, ceasing its own-brand scheduled services to focus on wet leasing aircraft to other European airlines. This means CityJet provides aircraft and crew to operate flights on behalf of other carriers. As of 2023, CityJet operates a fleet of Bombardier CRJ900 and CRJ1000 aircraft, primarily for airlines like Scandinavian Airlines (SAS), Lufthansa, and Brussels Airlines. In 2023, CityJet merged with Air Nostrum, forming the Strategic Alliance of Regional Airlines (SARA).