Line 2 (Hoan Kiem Line) of the Hanoi Metro is an under-construction rapid transit railway that will connect Noi Bai International Airport to the old city area in Hoan Kiem District.
Line 2 will be 42 km in length with 32 stations and 2 depots.
Construction of the Nam Thang Long – Tran Hung Dao section broke ground on the 9th of October, 2025.
The line will be build in 4 phases:
Phase 1: Nam Thang Long – Tran Hung Dao: 11.5 km (8.9 km underground and 2.6 km on surface), 10 stations (7 underground, 3 elevated).
Phase 2: Tran Hung Dao – Thuong Dinh: 5.9 km underground.
Phase 3: Thuong Dinh – Ring road 2.5 – Hoang Quoc Viet
Phase 4: Noi Bai Airport – Nam Thang Long: 12.5 km.
Line 2 will pass the east side of Hoan Kiem Lake. The project was delayed while the city decided where to place Hoan Kiem Station in this historic area. The line will also pass through the new government administrative area in West Lake West.
Line 2 Hanoi Metro maps
There isn’t an official detailed map of Line 2. There is a future map on the Hanoi Metro website.
[View full size map.]
A map with some of the station names is at Wikipedia.
[Map by Đào Mạnh Sơn via Wikimedia Commons.]
Links and resources
Guide for Hanoi Metro Line 2 by hanoirailtransit.com.
Hanoi City Urban Railway Construction Project: (Nam Thang Long – Tran Hung Dao Section (Line 2))
The Status of Acceptance of the Requests and the Progress of Procedures
Preliminary investigation (2014/10/29-12/3)
News archive
2025
Hanoi breaks ground for Nam Thang Long–Tran Hung Dao metro line – [09/10/25]
The project is financed by official development assistance (ODA) from the Japan International Cooperation Agency (JICA) alongside the city’s corresponding fund. It stands as a symbol of the strong friendship and enduring cooperation between Vietnam and Japan.
Hanoi breaks ground on metro line passing through Old Quarter and Hoan Kiem Lake – [09/10/25]
“The Hanoi City People’s Committee on the morning of October 9 broke ground on the Nam Thang Long–Tran Hung Dao section of Metro Line No. 2, a major national infrastructure project worth VND35 trillion.”
Hanoi to begin construction of two major metro lines in late 2025 – [27/07/25]
“Spanning 11.5 km, line No. 2 will include an 8.9 km underground track and a 2.6 km elevated section. The line features seven underground and three elevated stations, with a total investment of nearly VND35.6 trillion (US$1.36 billion), an increase of more than VND16 trillion from its original approval in 2008.
The route begins at Nam Thang Long, runs along Nguyen Van Huyen, Hoang Quoc Viet, Hoang Hoa Tham, Thuy Khue, Phan Dinh Phung, and key Old Quarter streets such as Hang Giay, Hang Dao, and ends at Tran Hung Dao Street.”
Hanoi sets groundbreaking dates for 2 metro lines – [19/07/25]
“Hanoi will break ground on metro lines No. 2 and No. 5, with a total estimated investment of some VND97.5 trillion (US$3.7 billion), on October 10 and December 19, respectively.”
Hanoi races to launch two metro lines and build major rail industry hub – [10/07/25]
“Currently, the city is finalizing necessary procedures to begin construction in 2025 on two metro lines: Line 2 (Nam Thang Long – Tran Hung Dao), 11.5 km in length, and Line 5 (Van Cao – Hoa Lac), spanning 38.43 km.”
Hanoi to begin work on two new metro lines in 2025 – [10/06/25]
“The city will break ground on Metro Line 2’s Xuân Đỉnh depot in October and start Line 5 construction within the year.”
Work on Hanoi’s Metro Line 2 scheduled to start in October – [18/02/25]
2024
Government approves $1.4 billion for Metro Line 2 in Hanoi – [17/12/24]
“The Nam Thang Long – Tran Hung Dao metro line, approved with a VND 35.588 trillion ($1.4 billion) investment, will begin construction in 2025, marking a crucial step in Hanoi’s urban transit development.”
Hanoi plans to start work on metro line 2 next year – [17/12/24]
“Hanoi is set to start the construction of a section of its metro line 2 next year at a cost of VND35.58 trillion ($1.45 billion).”
Removing the final knot in adjusting Hanoi metro line 2 – [14/11/24]
“The 4-year investment policy adjustment roadmap for the Hanoi Urban Railway Project, Line 2, Nam Thang Long – Tran Hung Dao section, is about to end and move to the implementation phase.”
Hanoi’s metro line to connect city with airport – [13/11/24]
“Hanoi has announced a plan for the construction of Urban Railway Line 2, which will run from Tran Hung Dao street in the centre of the city to the outlying district of Soc Son.”
Metro line connecting capital with airport needed – [07/11/24]
“Residents of Hanoi increasingly yearn for a metro line linking the Noi Bai International Airport to reduce the costs and travel times for both locals and tourists.”
Hanoi urban railway project delayed for 16 years, total capital increased by 16.000 billion VND – [29/10/24]
“The Ministry of Planning and Investment has just sent a document asking for opinions from the ministries of Finance, Transport, Construction, Justice and the State Bank on the dossier adjusting the investment policy of the Hanoi urban railway project, line 2, Nam Thang Long – Tran Hung Dao section.”
Hà Nội’s urban railway line 2 project to be completed by 2031 – [21/08/24]
“The implementation time of the Hà Nội’s urban railway line 2 project, connecting Nam Thăng Long Urban area to Trần Hưng Đạo Street, is to be completed by 2031 instead of 2015 as per the initial plan.”
[The perspective of the urban railway line, connecting Nam Thăng Long Urban area to Trần Hưng Đạo Street.—Photo baogiaothong.vn.]
Hanoi seeks to increase investment cost of metro line approved 15 years ago – [24/01/24]
“The total investment for Nam Thang Long – Tran Hung Dao metro line in Hanoi has been proposed at VND35.6 trillion (US$1.44 billion), up 82% from when the line was approved in 2008.”
Costs for Hà Nội’s Metro No.2 project go up by over $652 million, operational by 2029 – [24/01/24]
“In the proposal from Hà Nội’s authorities, the project will be put into operation by 2029 – 14 years later than the original deadline of 2015 – with two additional years for training, operation, and maintenance.”
2022
82% rise proposed for investment of Hanoi’s urban railway No.2 – [24/10/22]
“The Hanoi Metropolitan Railway Management Board has submitted a proposal to the city People’s Committee on the adjustments of investment policy for the Hanoi urban railway line No.2 (Nam Thang Long – Tran Hung Dao).”
Hanoi proposes $644 mln additional capital for No. 2 metro project – [23/10/22]
“Hanoi is proposing that the completion date for its No. 2 metro route Nam Thang Long – Tran Hung Dao be extended to 2027 and VND16 trillion ($644.5 million) be added to its budget.”
“Le Trung Hieu, deputy director of the Hanoi Metropolitan Railway Management Board (MRB) said the project was established in 2008 but hasn’t been deployed, so the total capital had to be increased from VND19.5 trillion to 35.6 trillion and the completion date pushed back from 2015 to 2027.”
[The position of the C9 underground station of the Nam Thang Long – Tran Hung Dao metro line in Hanoi. Graphic by VnExpress/Tien Thanh.]
Hà Nội decides C9 metro station location – [25/03/22]
“The station will be built outside of the protection area of Hoàn Kiếm Lake area as stated under the heritage law.”
“The underground station is now planned to be located under Đinh Tiên Hoàng Street, in front of the headquarters of the Hanoi Electricity Corporation and the city’s People’s Council and People’s Committee.”
Hanoi decides location of underground metro station – [24/03/22]
“In the original plan, the main body of the C9 station and one of its entrances sit entirely within the protection area of Hoan Kiem Lake and Ngoc Son as stated under the heritage law.”
2019
Hanoi proposes ODA funding of $1.32 bln for metro section – [28/11/19]
“Hanoi wants to borrow VND30.57 trillion ($1.32 billion) in official development assistance (ODA) to construct a downtown metro section.
This means ODA would account for 85.6 percent of the total investment for the 11.5-kilometer section of Hanoi’s Metro Line 2, the municipal People’s Committee said in a proposal sent to the city People’s Council.”
Hanoi metro section to suffer 12-year delay, cost $690 mln more – [23/11/19[
“The completion of a downtown Hanoi metro section will be delayed until 2027 and its cost is set to rise by 82 percent.”
Tug of war continues over Hanoi metro station location – [04/10/19]
“The culture ministry has cautioned that a metro station planned near Hanoi’s iconic Hoan Kiem Lake could violate the nation’s Cultural Heritage Law.”
Hanoi not to budge on controversial location of metro station – [27/09/19]
“Hanoi is set on placing a metro station underneath Dinh Tien Hoang Street, just 10 meters away from the iconic Hoan Kiem Lake.”
Hanoi seeks approval on underground station near Hoan Kiem Lake – [27/09/19]
“Due to difficulties in designing C9 metro underground station located near Hanoi’s Hoan Kiem (Sword) Lake, the construction of a metro line connecting Nam Thang Long Station in the north of the city and Tran Hung Dao Street has been halted for 11 years.”
Hanoi chairman eases concerns about metro station location – [26/09/19]
“The underground station on Hanoi’s future metro line 2 will not harm historical sites surrounding Hoan Kiem, reassured Nguyen Duc Chung, Chairman of the municipal people’s committee.”
2018
Dos and don’ts for the Hoan Kiem Lake metro station – [30/10/18]
Hoàn Kiếm metro station still debated after 15 years – [25/08/18]
“It has been 15 long years since the debate over the location of a single metro station beside the historic Hoàn Kiếm (Returned Sword) lake broke out, and the dispute seems unlikely to end soon.”
2016
Concern over entrance to Hanoi subway project – [20/09/16]
“Local experts and architects have expressed concern over the design of a subway project in Hanoi, with one of the aboveground entrances and exits to be located near the capital’s iconic Hoan Kiem Lake.”
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