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Bucharest Metro Line M6 (Gara de Nord – Otopeni Airport)

Metro line under construction between Bucharest's main railway station, Gara de Nord, and Henri Coandă International Airport at Otopeni: about 17.8 km with 16 stations, four of them shared with line M4. Phase II (1 Mai–Tokyo, 6.6 km, 6 stations) started in December 2023 and phase III (Tokyo–Airport, 7.6 km, 6 stations) in March 2025, with completion expected by 2028. The estimated €1.2 billion cost is covered from the national budget, EU funds and a JICA (Japan International Cooperation Agency) loan. It will be the airport's second rail connection, after the Gara de Nord–Otopeni surface link that opened in 2020.

Total length
18 km
Open today
4 km
Under construction
14 km
Sections
3
Cost on record
€581.858M
2 of 3 sections carry a comparable figure

Restated into EUR at 2025 prices.

Includes 4 km whose works another project already measures, either as shared track or as a structure inside one of its sections. Counted in full here, and once in any total that spans projects.

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Sections

Sections of Bucharest Metro Line M6 (Gara de Nord – Otopeni Airport): status, length, dates, cost, funding and contractors
SectionsStatusLengthTimelineCostFundingContractorsContract terms
Phase I: Gara de Nord – 1 Mai (shared with M4)
Shared track Shared with Bucharest Metro Line M4 (Gara de Nord 2 – Străulești)

The four stations between Gara de Nord and 1 Mai were built from 1989 and opened in 2000 as part of line M4; M6 trains will share them

18
Opened4 km
  1. 1989Construction start
  2. 2000Opened
–
  • LoanEuropean Investment Bank loan approved in 1997, co-financing the project Modernisation of the Bucharest metro, stage I, which included completing and opening Gara de Nord 2 – 1 Mai
––
Phase II: 1 Mai – Tokyo

Six new stations (Pajura, Expoziției, Piața Montreal, Gara Băneasa, Aeroportul Băneasa and others) on the 6.6 km between 1 Mai and Tokyo; works started December 2023, expected in service 2027. Total M6 cost estimated at €1.2 billion

12345
Under construction
34 of 48 contracted months
7 km
  1. Mar 8, 2022Tender awarded
  2. Dec 15, 2023Construction start
  3. 2027Expected opening
–
  • European UnionLarge Infrastructure Operational Programme (POIM)
  • National budget
  • Alsim Alarko Sanayi Tesisleri ve Ticaret A.S. – Makyol Insaat Sanayi Turizm ve Ticaret A.S. (structural works)Builder
48 mo execution · Contract value lei 1.2B
Phase III: Tokyo – Henri Coandă Airport

Six stations over 7.6 km from Tokyo to the airport terminal; works started March 2025, the whole line expected to be completed by 2028

167
Under construction
41 of 48 contracted months
8 km
  1. May 2, 2023Tender awarded
  2. Mar 2025Construction start
  3. 2028Expected opening
–
  • National budget
  • LoanJICA (Japan International Cooperation Agency) loan, agreement ROM-P5
  • Gülermak Ağır Sanayi İnşaat ve Taahhüt A.Ş. – Somet S.A. (structural works)Builder
48 mo total · Contract value lei 1.3B

This section runs on track another line already owns. It counts in this line's length and is left out of every total that spans projects, so the kilometres are counted once.

Contractor roles are as recorded in the award. Only builders count toward the delivery rankings.

Funding

  • National budget14 km
    2 sections
  • Loan11 km
    2 sections
    • European Investment Bank loan approved in 1997, co-financing the project Modernisation of the Bucharest metro, stage I, which included completing and opening Gara de Nord 2 – 1 Mai
    • JICA (Japan International Cooperation Agency) loan, agreement ROM-P5
  • European Union7 km
    1 section
    • Large Infrastructure Operational Programme (POIM)

A section that lists two sources counts its full length under each: the data records which sources paid, not what share each one carried.

Related projects

Sources

  1. Wikipedia: Bucharest Metro Line M6
  2. Evenimentul Zilei: Metrorex a semnat contractul de peste un miliard de lei pentru M6 (8 martie 2022)read Sep 25, 2026
  3. Club Feroviar: Metroul de Otopeni, doi ani de la semnarea contractului la eliberarea autorizației de construire (13 decembrie 2023)read Sep 25, 2026 · archived copy
  4. Metrorex: S-a dat startul construirii Magistralei 6 de metrou (15 decembrie 2023)read Sep 25, 2026 · archived copy
  5. Metrorex: POIM M6 (communiqués list, archived 2026)read Sep 25, 2026 · archived copy
  6. Metrorex: Semnarea contractului M6 Lotul 1.2: Tokyo – Aeroport Otopeni (2 mai 2023)read Sep 25, 2026 · archived copy
  7. Profit.ro: Guvernul extinde până în 2032 acordul de împrumut JICA pentru M6 (21 ianuarie 2022)read Sep 25, 2026
  8. Metrorex: Extinderea retelei de metrou – Magistrala 4 Racorduri (archived 29 June 2007)read Sep 28, 2026 · archived copy