Stockholm STO to Helsinki HEL flight with Sas Airways

SAS, or Scandinavian Airlines, is the national airline of Denmark, Norway, and Sweden, headquartered in Solna, Sweden. Founded in 1946, it emerged from a merger of the three countries' national carriers to handle transatlantic operations. SAS operates extensive regional services within Scandinavia and Europe, as well as international flights to Asia and North America, with primary hubs in Copenhagen, Stockholm, and Oslo. As of July 2024, SAS, including its subsidiaries SAS Link and SAS Connect, operates a fleet of 133 aircraft to 130 destinations. SAS joined SkyTeam on September 1, 2024, after leaving Star Alliance.

Qatar Airways is the national airline of Qatar, headquartered in Doha and based at Hamad International Airport. Established in 1993 and re-launched in 1997, it has grown into one of the Middle East's largest network airlines, operating an extensive network of international services across Europe, the Middle East, Africa, Asia Pacific, and the Americas. The airline offers passenger and air cargo transportation, along with services like corporate travel, online check-in, and in-flight entertainment. Qatar Airways is a member of the Oneworld alliance and operates a modern fleet of over 200 aircraft. It has received numerous accolades, including \World's Best Airline\" multiple times."

Finnair is the flag carrier and largest airline of Finland, with its main hub at Helsinki Airport. Founded in 1923 as Aero O/Y, it is one of the oldest continuously operating airlines in the world. Finnair is a member of the Oneworld airline alliance and is majority-owned by the Finnish government. The airline specializes in connecting Europe, North America, and Asia via its Helsinki hub, operating flights to over 80 destinations in more than 35 countries. Finnair is known for its focus on sustainability and has a modern, mostly Airbus fleet.

Norwegian Air International (NAI) was an Irish airline and a fully integrated subsidiary of Norwegian Air Shuttle, operating under its corporate identity. Headquartered at Dublin Airport, NAI operated flights to destinations across Europe and the Middle East from various European bases. Between 2017 and 2019, it also offered services from Europe to the United States and Canada. NAI received its operating license and air operator's certificate from Ireland in February 2014, allowing it to leverage European Union airline freedoms. By April 2021, its aircraft and operations were gradually transferred to its Swedish sister airline, Norwegian Air Sweden, and its parent company.

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).

Braathens Regional Aviation was a Swedish airline that operated wet-leasing services for its sister airline, Braathens Regional Airlines, from 2016 until it ceased operations in 2020 due to the COVID-19 pandemic. Founded in 1981 as Malmö Aviation, it initially operated domestic routes from Stockholm Bromma Airport. The broader \Braathens\" entity, with a legacy dating back to 1946, has evolved into a partner for flexible wet lease and charter solutions. They offer ACMI (Aircraft, Crew, Maintenance, and Insurance) services, ad hoc flights, and long-term charter operations. Their diverse fleet includes ATR 72 turboprop aircraft, as well as Airbus A319 and A320 models. As of January 2025, Braathens operates flights on behalf of Scandinavian Airlines (SAS) under a long-term agreement."