Compagnie Internationale de Navigation Aérienne
A French–Romanian pioneering airline founded as CFRNA in 1920 and renamed CIDNA in 1925, operating passenger, mail, and cargo services across Europe before becoming part of Air France in 1933.
Last updated August 25, 2026
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Overview
Compagnie Internationale de Navigation Aérienne, generally known by the abbreviation CIDNA, was a pioneering French–Romanian airline that operated during the formative years of European commercial aviation. The company began on 1 January 1920 under the name Compagnie franco-roumaine de navigation aérienne, commonly abbreviated CFRNA. Its creation linked French aviation interests with Romania and established a scheduled air transport business at a time when long-distance passenger flying was still developing and commercial networks were only beginning to take shape. The airline used French-built Potez aircraft and carried several types of traffic: passengers, airmail, and cargo. Its principal international route connected Paris with Bucharest through Strasbourg, Prague, Vienna, and Budapest. This corridor made the company an important early bridge between Western and Eastern Europe. The route is regarded as the first operative transcontinental airline service in aviation history, reflecting the company’s role in converting long-distance international air travel from an experimental activity into a regular transport service. CFRNA also participated in several notable early aviation milestones. In 1923, it operated what is described as the first international passenger night flight, linking Belgrade and Bucharest. The service demonstrated the airline’s willingness to extend scheduled operations beyond daylight flying, an important step in improving the practicality and continuity of international air travel. On 1 January 1925, the company changed its name to Compagnie internationale de navigation aérienne, or CIDNA. The new name placed greater emphasis on its international scope rather than its original French–Romanian identity. Under the CIDNA name, the airline expanded its activity in Romania. In 1925, it opened the first domestic Romanian air route between Bucharest and Galați. From 24 June 1926, the service was extended toward Iași, Chișinău, and Bălți, creating a broader network within and around Romania while maintaining the company’s European orientation. The Romanian side of the operation underwent a further institutional change in 1930, when it adopted the name LARES, an abbreviation of Liniile Aeriene Române Exploatate de Stat, meaning Romanian Airlines Operated by the State. This marked a transition in the organization of the Romanian aviation business and reduced the prominence of the original CFRNA/CIDNA structure in that market. CIDNA ultimately disappeared as an independent company during the consolidation of French commercial aviation. On 7 October 1933, it became one of the constituent companies combined to form Air France. Its operations and historical significance therefore belong to the pre-Air France era of European airline development. Although the brand was short-lived by modern corporate standards, its scheduled Paris–Bucharest network, early international night operation, and role in opening Romanian domestic services made it an important forerunner of organized international air transport.
History
The airline that later became CIDNA was established on 1 January 1920 as the Compagnie franco-roumaine de navigation aérienne, abbreviated CFRNA. It was a French–Romanian undertaking created during the first major period of European commercial aviation. At the time, aircraft were beginning to move from military and experimental roles into scheduled civilian transport, but international airline networks remained limited and operationally difficult. CFRNA’s purpose was to create a regular air link between France and Romania while serving intermediate Central European points. The company operated French-built Potez aircraft and carried passengers, mail, and cargo. Its principal route ran from Paris to Bucharest through Strasbourg, Prague, Vienna, and Budapest. This route connected several national aviation markets and crossed a substantial part of Europe, leading it to be recognized as the first operative transcontinental airline service in aviation history. The airline’s significance was not limited to the distance covered: it helped establish the idea that a multi-country air corridor could be operated as a scheduled commercial service rather than as a series of isolated flights. CFRNA also contributed to the development of extended operating hours. In 1923, it operated a passenger flight between Belgrade and Bucharest at night. The flight is described as the first international passenger night flight. Such operations were an important technical and commercial development because night flying could reduce journey times and make air travel more compatible with regular transport schedules. On 1 January 1925, the company adopted the name Compagnie internationale de navigation aérienne, or CIDNA. The renaming reflected its broader international identity and distinguished the company from the more specifically French–Romanian wording of its original title. CIDNA retained its cross-border European role while also expanding its activity in Romania. In 1925, it opened a domestic route from Bucharest to Galați, identified as the first domestic Romanian air route. From 24 June 1926, the service was extended to Iași, Chișinău, and Bălți, giving the company a larger Romanian network and improving links between the capital and eastern destinations. The Romanian component of the business changed status in 1930, when it adopted the name LARES, derived from Liniile Aeriene Române Exploatate de Stat, or Romanian Airlines Operated by the State. This reorganization formed part of the changing institutional landscape of Romanian aviation and marked a distinction between the Romanian state-operated airline activity and the earlier CFRNA/CIDNA identity. CIDNA remained part of the consolidation of French commercial airlines during the early 1930s. On 7 October 1933, it became one of the companies brought together to establish Air France. The transaction ended CIDNA’s existence as an independent airline, while its routes, experience, and historical role became part of the larger French national airline story. The company therefore has no current operations, ownership, or independent corporate presence. Its lasting importance lies in its pioneering scheduled international network, its use of French aircraft in commercial service, its carriage of passenger, postal, and cargo traffic, and its early contribution to night flying and Romanian domestic aviation.
- 1933
Integration into Air France
[1]On 7 October, CIDNA becomes one of the constituent companies of Air France.
- 1930
Romanian arm becomes LARES
[1]The Romanian arm adopts the state-operated airline name LARES.
- 1926
Expansion to eastern Romanian destinations
[1]From 24 June, the Romanian service extends to Iași, Chișinău, and Bălți.
- 1925
Renaming as CIDNA
[1]On 1 January, CFRNA becomes Compagnie internationale de navigation aérienne, known as CIDNA.
- 1925
First domestic Romanian route
[1]CIDNA opens a Bucharest–Galați route, described as Romania’s first domestic air service.
- 1923
First international passenger night flight
[1]The company operates a night passenger service between Belgrade and Bucharest.
- 1920
CFRNA is established
[1]The Compagnie franco-roumaine de navigation aérienne is founded on 1 January as a French–Romanian airline.
Products and positioning
A pioneering scheduled European airline linking France, Central Europe, and Romania, with a service proposition built around international passenger travel, airmail, cargo, and early network expansion.
Passenger airline · 1920
International passenger services
CIDNA’s core passenger offering was scheduled international air travel between Paris and Bucharest, with intermediate stops in Strasbourg, Prague, Vienna, and Budapest. The route connected Western, Central, and Eastern Europe and represented one of the earliest sustained transcontinental airline operations.
Postal aviation · 1920
Airmail transport
The airline carried mail alongside passengers and cargo on its European network. Airmail was a central component of early commercial aviation because it provided a valuable scheduled use for aircraft while passenger demand was still developing.
Air freight · 1920
Air cargo transport
CIDNA transported cargo as part of its scheduled air services. The cargo activity complemented passenger and postal operations and helped establish the airline as a broader air transport provider rather than solely a passenger carrier.
Domestic passenger airline · 1925
Romanian domestic network
Beginning with Bucharest–Galați in 1925, CIDNA developed domestic Romanian services that were later extended toward Iași, Chișinău, and Bălți. These routes connected Bucharest with important destinations in the eastern part of the Romanian network.
Brand decisions
1933
Join the formation of Air FranceM&ABackground
French commercial aviation was consolidated into a larger national airline structure during the early 1930s.
Action taken
On 7 October 1933, CIDNA became one of the constituent companies of Air France.
Aftermath
CIDNA ceased to exist as an independent airline, and its history became part of the prehistory of Air France.
1925
Adopt the CIDNA nameStrategyBackground
The original French–Romanian company name was replaced as the airline developed a more explicitly international identity.
Action taken
The company changed its name from CFRNA to Compagnie internationale de navigation aérienne, abbreviated CIDNA, on 1 January 1925.
Aftermath
The CIDNA identity was used during the company’s later period of international and Romanian network expansion.
1925
Launch the Bucharest–Galați routeProduct launchBackground
After operating an international European corridor, the airline expanded its Romanian domestic presence.
Action taken
CIDNA opened a scheduled service between Bucharest and Galați.
Aftermath
The route was later extended toward Iași, Chișinău, and Bălți from 24 June 1926.
Sources1 sources
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