KLM Royal Dutch Airlines, or simply KLM (an abbreviation for their official name Koninklijke Luchtvaart Maatschappij N.V. [ˈkoːnɪŋkləkə ˈlʏxtfaːrt ˌmaːtsxɑˈpɛi ˌɛnˈveː], lit. 'Royal Aviation Company'), is the flag carrier of the Netherlands. KLM's headquarters are located in Amstelveen, with its hub at nearby Amsterdam Airport Schiphol. It is a subsidiary of the Air France–KLM group and a member of the SkyTeam airline alliance. Founded in 1919, KLM is the oldest operating airline still using its original name, having gone through significant changes in its ownership and legal structure over its history, including a period of majority government ownership. The company had a fleet of 110 aircraft (excluding subsidiaries) and 35,488 employees as of 2021. KLM operates scheduled passenger and cargo services to 145 destinations.
Historically, KLM established some of the earliest scheduled intercontinental flights, including interwar routes to the Dutch East Indies (now Indonesia). In 2004, the airline merged with Air France to form the Air France–KLM holding company, though both carriers continue to operate under their separate brand identities. The airline's mainline network is supported by several subsidiaries. Regional European feeder routes are operated by KLM Cityhopper, while low-cost services are managed by Transavia. Freight operations are handled by KLM Cargo and its subsidiary Martinair.
In 1919, young aviator lieutenant Albert Plesman sponsored the ELTA aviation exhibition in Amsterdam. Attendance at the exhibition was over half a million, and after it closed, several Dutch commercial interests intended to establish a Dutch airline, which Plesman was nominated to head. In September 1919, Queen Wilhelmina awarded the yet-to-be-founded KLM its "Royal" ("Koninklijke") predicate. On 7 October 1919, eight Dutch businessmen, including Frits Fentener van Vlissingen, founded KLM as one of the first commercial airline companies. Plesman became its first administrator and director.
The first KLM flight took place on 17 May 1920. KNLM's first pilot, Jerry Shaw, flew from Croydon Airport, London, to Amsterdam. The flight was flown using a leased Aircraft Transport and Travel de Havilland DH-16, registration G-EALU, which was carrying two British journalists and some newspapers. In 1920, KLM carried 440 passengers and 22 tons of freight. In April 1921, after a winter hiatus, KLM resumed its services using Fokker F.II and Fokker F.III aircraft. In 1921, KLM started scheduled services.
KLM's first experimental intercontinental flight took off on 1 October 1924. The final destination was Batavia, Dutch East Indies on Java, now Jakarta, Indonesia, into what would become Halim Perdanakusuma International Airport. The flight used a Fokker F.VII with registration H-NACC and was piloted by Jan Thomassen à Thuessink van der Hoop. In 1927, Baltimore millionaire Van Lear Black, who had heard about the 1924 flight, chartered H-NADP to do the same flight, which departed 15 June and went successfully (16 days), and flew back to much rejoicing. This inspired KLM to make a second test flight, which left on 1 October, returning successfully with much experience gained. In September 1929, regular scheduled services between Amsterdam and Batavia commenced. Until the outbreak of the Second World War in 1939, this was the world's longest-distance scheduled service by airplane. By 1926, it was offering flights to Amsterdam, Rotterdam, Brussels, Paris, London, Bremen, Copenhagen, and Malmö, using primarily Fokker F.II and Fokker F.III aircraft.
In 1930, KLM carried 15,143 passengers. The Douglas DC-2 was introduced on the Batavia service in 1934. The first experimental transatlantic KLM flight was between Amsterdam and Curaçao in December 1934 using the Fokker F.XVIII "Snip".
In July 1935, KLM had three major international passenger flight crashes in one week. The "Kwikstaart" crashed in Amsterdam on 14 July, the "Maraboe" in Bushir on 17 July, and the “Gaai” in San Giacomo on 20 July. The week of 14 to 20 July 1935 came to be known as a "black week" for KLM. In these three crashes, KLM lost three airplanes as well as crew in two of them. Together with an earlier crash in April of the "Leeuwerik", KLM had lost around 15% of its pilots in 1935. As a result, there was a shortage of crew members and airplanes, and the Amsterdam—Milan flight service was taken over by Deutsche Lufthansa.
The first of the airline's Douglas DC-3 aircraft were delivered by ship, on the Holland America Line ocean liner Statendam on 11 September 1936; these replaced the DC-2s on the service via Batavia to Sydney. KLM was the first airline to serve Manchester's new Ringway airport, starting in June 1938. KLM was the only civilian airline to receive the Douglas DC-5; the airline used two of them in the West Indies and sold two to the East Indies government, and is thus the only airline to have operated all Douglas 'DC' models other than the DC-1.
The outbreak of the Second World War in September 1939 restricted KLM's operations, with flights over France and Germany prohibited, and many of its aircraft painted in overall orange to limit the potential for confusion with military aircraft. European routes were limited to services to Scandinavia, Belgium and the UK, with flights to Lisbon (bypassing both British and French airspace) starting in April 1940.
When Germany invaded the Netherlands on 10 May 1940, several KLM aircraft—mostly DC-3s and a few DC-2s—were en route to or from the Far East, or were operating services in Europe. Five DC-3s and one DC-2 were taken to Britain. During the war, these aircraft and crew members flew scheduled passenger flights between Bristol and Lisbon under BOAC flight numbers and registration.
On 3 March 1942, Douglas DC-3 PH-ALP "Pelikaan", then registered as PK-AFV, was shot down over Western Australia by Imperial Japanese Navy Air Service Mitsubishi A6M Zeros during the attack on Broome while carrying a package of diamonds. The DC-3 crash landed at Carnot Bay, 80 kilometers from Broome. Pelikaan was subsequently strafed by the Zeros that had shot it down, killing three passengers and the flight engineer. Diamonds worth an estimated 150,000–300,000 Australian pounds were stolen from the wreckage of the aircraft, and nobody has been convicted of the crime.
Douglas DC-3 PH-ALI "Ibis", then registered as G-AGBB, was attacked by the Luftwaffe on 15 November 1942, 19 April 1943, and finally shot down on 1 June 1943 as BOAC Flight 777, killing all passengers and crew.
Some KLM aircraft and their crews ended up in the Australia-Dutch East Indies region, where they helped transport refugees from Japanese aggression in that area.
Although operations paused in Europe, KLM continued to fly and expand in the Caribbean.
After the end of the Second World War in August 1945, KLM immediately started to rebuild its network. Since the Dutch East Indies were in a state of revolt, Plesman prioritised re-establishing KLM's route to Batavia. This service was reinstated by the end of 1945. Domestic and European flights resumed in September 1945, initially with a fleet of Douglas DC-3s and Douglas DC-4s. On 21 May 1946, KLM was the first continental European airline to start scheduled transatlantic flights between Amsterdam and New York City using Douglas DC-4 aircraft. By 1948, KLM had reconstructed its network and services to Africa, North and South America, and the Caribbean resumed.
Long-range, pressurized Lockheed Constellations and Douglas DC-6s joined KLM's fleet in the late 1940s; the Convair 240 short-range pressurized twin-engine airliner began European flights for the company in late 1948.
During the immediate post-war period, the Dutch government expressed interest in gaining a majority stake in KLM, thus partially nationalizing it. Plesman wanted KLM to remain a private company under private control; he allowed the Dutch government to acquire a minority stake in the airline. In 1950, KLM carried 356,069 passengers. The expansion of the network continued in the 1950s with the addition of several destinations in western North America. KLM's fleet expanded with the addition of new versions of the Lockheed Constellation and Lockheed Electra, of which KLM was the first European airline to fly.