Line 2 of the Hanoi Metro is an under construction metro line connecting Noi Bai Airport with the city centre. Construction of the Nam Thang Long – Tran Hung Dao section broke ground on the 9th of October, 2025.

The original plan was for a line of 42 km in length with 32 stations. The plan for the line has since been extended further south to Hùng Vương Stadium, and the line will be 56.5 km.

Hanoi held a groundbreaking ceremony for the new section of Line 2 (alongside four other new metro lines) on 22nd of June, 2026.

Hanoi Metro Line 2 stations

Line 2 was planned to be built in 4 phases, though this may change with the stadium extension.

Phase 1: Nam Thăng Long – Trần Hưng Đạo
11.5 km (8.9 km underground and 2.6 km elevated).
10 stations (7 underground, 3 elevated).

Phase 2: Trần Hưng Đạo – Thượng Đình
5.9 km (underground).
6 stations.

Phase 3: Thượng Đình – Ring road 2.5 – Hoàng Quốc Việt

Phase 4: Nội Bài Airport – Nam Thang Long
12.5 km long

Phase 1
Nam Thăng Long
Ngoại Giao Đoàn
Tây Hồ Tây
Bưởi
Quần Ngựa
Bách Thảo
Hồ Tây
Hàng Đậu
Hoàn Kiếm Lake
Trần Hưng Đạo

Phase 2
Cầu Dền
Bách Khoa
Kim Liên
Chùa Bộc
Ngã Tư Sở
Thượng Đình (interchange with Line 2A)

Hanoi Metro Line 2 maps

This geographic map from 2021 shows Line 2 before the extensions that were announced in 2026. The map also shows Line 2A in relation to Line 2.

[Map via vietnammoi.vn.]

Hanoi Metro Line 2 links and resources

Line name: Hoan Kiem Line (Hoàn Kiếm Line).

Future Southeast Asia: Line 2 Hanoi Metro – archive of news updates about Line 2.