Bangalore Metro Blue Line — Route, Stations, Airport Metro & Opening Date
The Namma Metro Blue Line is Bengaluru's upcoming airport metro corridor, stretching from Central Silk Board to Kempegowda International Airport (KIA) via the Outer Ring Road and Hebbal. Spanning approximately 58 km with ~30 stations, it is being built in two phases — Phase 2A along the ORR (13 stations, now expected 2027) and Phase 2B to the airport (17 stations, Hebbal–airport section by September 2027, full corridor now targeted March 2028). Updated August 2026.
Phase 2A (Silk Board–KR Puram, ORR section) was targeted for late 2026, but officials have confirmed commercial operations within 2026 are no longer feasible — pending work at Central Silk Board, Ibbalur and the Baiyappanahalli depot link line have pushed it to 2027. Phase 2B's Hebbal–airport section targets September 2027, but the full corridor's completion date was pushed from December 2027 to March 2028 in August 2026, since the connecting KR Puram–Hebbal stretch is delayed. This page will be updated as construction progresses.
Blue Line — Quick Facts
- Route: Central Silk Board ↔ Kempegowda International Airport (KIA)
- Stations: ~30 (13 Phase 2A + 17 Phase 2B) • Length: ~58 km
- Status: Under construction — not yet open
- Phase 2A (ORR, 13 stations): Now expected 2027 (2026 commercial launch no longer feasible)
- Phase 2B (Airport, 17 stations): Hebbal–airport by September 2027; full corridor now targeted March 2028
- Interchanges: Yellow Line (Silk Board), Pink Line (Nagawara)
Blue Line at a Glance
| Terminals | Central Silk Board ↔ KIAL Terminals (Airport) |
| Number of stations | ~30 (13 Phase 2A + 17 Phase 2B) |
| Length | ~58 km (19.75 km Phase 2A + ~38 km Phase 2B) |
| Status | Under construction |
| Phase 2A opening (ORR) | Now expected 2027 — officials confirm 2026 commercial operations no longer feasible |
| Phase 2B opening (Airport) | Hebbal–Airport section: September 2027; full corridor (via KR Puram–Hebbal): March 2028 |
| Colour code | Blue |
| Type | Fully elevated |
| Interchanges | Yellow Line at Silk Board; Pink Line at Nagawara |
| Operator | BMRCL (Namma Metro) |
All Blue Line Stations (in order)
From Central Silk Board in the south to Kempegowda International Airport in the north. All stations are elevated.
Phase 2A — Outer Ring Road Section (13 stations, now expected 2027)
| # | Station | Nearby / Notes |
|---|---|---|
| 1 | Silk Board | Southern terminus. Interchange — Yellow Line. Silk Board junction, major ORR gateway. The train-reversal viaduct here has been a key construction holdup; a travellator to the Yellow Line platform is planned but still at tendering stage. |
| 2 | HSR Layout | HSR Layout, ORR tech corridor. |
| 3 | Agara | Agara Lake area, HSR Layout / Koramangala. |
| 4 | Ibbalur | Ibbalur, Bellandur, ORR. Construction here has been slowed by a high-pressure GAIL gas pipeline, water-line conflicts and land acquisition. |
| 5 | Bellandur | Bellandur, major IT hub on ORR. |
| 6 | Kadubeesanahalli | Kadubeesanahalli, near Embassy Tech Village. |
| 7 | Kodibisanahalli | Kodibisanahalli, ORR. |
| 8 | Marathahalli | Marathahalli Bridge — one of Bengaluru's busiest ORR junctions. |
| 9 | ISRO | Near ISRO campus, Outer Ring Road. |
| 10 | Doddanekundi | Doddanekundi, ITPL / Whitefield corridor. |
| 11 | DRDO Sports Complex | Near DRDO Sports Complex, Marathahalli area. |
| 12 | Sarasvathi Nagara | Sarasvathi Nagara (formerly Mahadevapura), east Bengaluru. |
| 13 | KR Puram | Krishnarajapura. Northern end of Phase 2A. Railway junction, east Bengaluru. |
Phase 2B — Airport Extension (17 stations, Hebbal–airport Sept 2027, full corridor March 2028)
| # | Station | Nearby / Notes |
|---|---|---|
| 14 | Kasturinagara | Kasturinagara, east Bengaluru. Phase 2B start. |
| 15 | Horamavu | Horamavu, north-east Bengaluru. |
| 16 | HRBR Layout | HRBR Layout, Kalyan Nagar area. |
| 17 | Kalyan Nagar | Kalyan Nagar, north Bengaluru. |
| 18 | HBR Layout | Hoysalanagara / HBR Layout. |
| 19 | Nagawara | Interchange — Pink Line. Nagawara, north Bengaluru. Connects to Pink Line terminal. |
| 20 | Veerannapalya | Veerannapalya, near Hebbal flyover. |
| 21 | Kempapura | Kempapura, Hebbal area, north Bengaluru. |
| 22 | Hebbal | Hebbal flyover junction. Blue Line turns north toward Airport Road from here. |
| 23 | Kodigehalli | Kodigehalli, NH 44 (Old Bellary Road). |
| 24 | Jakkur Cross | Jakkur Cross, Airport Road. |
| 25 | Yelahanka | Yelahanka town, Airport Road. Major satellite town north of Bengaluru. |
| 26 | Bagalur Cross | Bagalur Cross, NH 44. |
| 27 | Bettahalasuru | Bettahalasuru, near KIA. |
| 28 | Doddajala | Doddajala, airport approach zone. |
| 29 | Airport City | Airport City precinct near KIA. |
| 30 | KIAL Terminals | Northern terminus. Kempegowda International Airport. Direct access to departure & arrival terminals. |
Blue Line Opening Timeline
The Blue Line is being constructed in two phases due to the scale of the project — the ORR section and the longer airport extension.
Phase 2A — Outer Ring Road Section
13 stations: Silk Board → KR Puram • 19.75 km elevated
Officials have now acknowledged that commercial operations within 2026 are no longer feasible — the corridor has slipped from its "late 2026" target to 2027. Three sites are cited as the specific holdups: at Central Silk Board, the viaduct needed for train reversal has been delayed by pending permissions, site-clearing and drainage work; at Ibbalur, construction has been slowed by underground utility conflicts (including a high-pressure GAIL gas pipeline and water lines) and land acquisition; and the 1.097 km link line to Baiyappanahalli Depot — needed for train stabling and maintenance before any passenger service can start — is also still pending. A travellator planned to connect the new Silk Board Blue Line station to the existing Yellow Line platform is still at the tendering stage. This section will serve the dense ORR tech corridor including Bellandur, Marathahalli and ISRO.
Phase 2B — Airport Extension
17 stations: Kasturinagara → KIAL Terminals • ~38 km elevated
The Hebbal–airport section is targeted for September 2027. But the full corridor's completion date was pushed from December 2027 to March 2028 in August 2026, since the connecting KR Puram–Hebbal stretch via Nagawara — where Hebbal's four-track interchange with the future Orange Line and pending Outer Ring Road clearances have slowed progress — isn't expected until December 2027–March 2028. Phase 2B runs north from KR Puram area through Hebbal and along Airport Road (NH 44) to Kempegowda International Airport. Construction is ongoing.
Interchanges & Connections
- Silk Board (Yellow Line) — Central Silk Board is the southern terminus of both the Blue Line and the Yellow Line. A travellator connecting the two platforms is planned (still at the tendering stage as of August 2026) so that ORR commuters can transfer directly to Electronic City, RV Road, BTM Layout and the rest of the Yellow Line without leaving station premises.
- Nagawara (Pink Line) — The Blue Line Phase 2B passes through Nagawara, which is also the northern terminus of the Pink Line. This interchange will link the airport corridor directly to MG Road, Jayadeva Hospital and south Bengaluru via the Pink Line.
When the Blue Line opens, you'll be able to use the journey planner to plan multi-line routes that include the Blue Line.
Blue Line on the Metro Map
The current network map shows the operating lines; the Blue Line corridor runs east–north along the ORR from Silk Board to the airport.
Why the Blue Line Matters
The Blue Line is arguably the most strategically important corridor in the Namma Metro Phase 2 expansion:
- Airport connectivity — Bengaluru is India's busiest airport by passenger volume. The current 40–90 minute taxi/bus ride from the city will be replaced by a reliable, affordable metro connection once Phase 2B opens (Hebbal–airport by September 2027, full corridor by March 2028).
- ORR tech corridor — Phase 2A serves the densest stretch of the Outer Ring Road — home to Bellandur, Marathahalli, Kadubeesanahalli and ISRO — where hundreds of thousands of IT workers currently face chronic traffic congestion.
- Multi-line connectivity — The Silk Board interchange with the Yellow Line and the Nagawara interchange with the Pink Line mean the Blue Line will knit together three major Phase 2 corridors, enabling seamless travel across much of the city.
- North Bengaluru growth — Yelahanka, Hebbal and the surrounding areas are among Bengaluru's fastest-growing suburbs. The Blue Line will give these areas their first metro connection.
Construction history and funding. The Karnataka cabinet cleared Phase 2A on 1 March 2017, and the Union Cabinet subsequently approved the combined Phase 2A/2B project — Silk Board to KR Puram, and KR Puram to the airport via Hebbal — at a total length of roughly 58.19 km. The corridor is being funded through a mix of multilateral loans and state contribution: a $500 million loan from the Asian Development Bank (board-approved December 2020) and a $318 million loan from the Japan International Cooperation Agency (agreement signed March 2021), alongside Government of Karnataka funding. Phase 2A includes a dedicated 1.097 km link line into the existing Baiyappanahalli Depot (also used by the Purple Line) rather than a standalone depot, which is one reason that link's completion is a hard prerequisite for any passenger service to start on the Blue Line.
Why it's called the airport line. Unlike the Purple, Green and Yellow lines, which primarily serve established residential and commercial neighbourhoods, the Blue Line's entire reason for being is closing Bengaluru's most conspicuous transit gap: India's third-busiest airport by passenger traffic has never had a rail link to the city it serves, forcing every air traveller onto the NH 44 highway through Hebbal and Yelahanka. Once open, the Blue Line will also be the only Namma Metro line to touch three other operating or under-construction lines — Yellow (Silk Board), Pink (Nagawara) and, via the shared Baiyappanahalli depot infrastructure, Purple — making it the structural "spine" that finally lets a commuter travel from Electronic City or Whitefield to the airport on a single connected metro network instead of needing a taxi for the final leg.
Blue Line — Frequently Asked Questions
When will the Bangalore Metro Blue Line open?
The Blue Line opens in phases. Phase 2A (13 stations, Silk Board to KR Puram) was targeted for late 2026, but officials have confirmed 2026 commercial operations are no longer feasible — pending civil works at Central Silk Board, Ibbalur and the Baiyappanahalli depot link have pushed it to 2027. Within Phase 2B (17 stations, airport extension to KIA), the Hebbal–airport section is targeted for September 2027, but the full corridor's completion date was pushed from December 2027 to March 2028 in August 2026, since the connecting KR Puram–Hebbal stretch is delayed. As of August 2026, no section is open to passengers.
Will there be a direct metro to Bangalore Airport?
Yes — the Hebbal–airport section is targeted for September 2027, giving KIAL Terminals station a metro connection. But a direct, transfer-free ride from central Bengaluru needs the connecting KR Puram–Hebbal stretch too, which isn't expected until the full corridor's revised March 2028 target. Until then, the nearest current metro station is Nagasandra on the Green Line (about 35 km away), with buses continuing to the airport.
How many stations are on the Blue Line?
The full Blue Line will have approximately 30 stations — 13 in Phase 2A (the ORR section, Silk Board to KR Puram) and 17 in Phase 2B (the airport extension, Kasturinagara to KIAL Terminals). The total length is approximately 58 km.
What is the route of the Blue Line metro?
The Blue Line runs from Central Silk Board (south Bengaluru) east along the Outer Ring Road through Bellandur, Marathahalli and ISRO to KR Puram, then continues north through Kasturinagara, Nagawara, Hebbal and Yelahanka along Airport Road to KIAL Terminals (Kempegowda International Airport). The entire line is elevated.
Which lines interchange with the Blue Line?
The Blue Line will interchange with the Yellow Line at Silk Board (both lines terminate here) and with the Pink Line at Nagawara (where the Pink Line terminates). These interchanges connect the Blue Line to Electronic City in the south and MG Road / Jayadeva Hospital in the west.
What is the nearest metro station to Bangalore Airport now?
As of August 2026, Nagasandra on the Green Line is the closest operational metro station to Kempegowda International Airport (about 35 km away by road). Once the Blue Line's Hebbal–airport section opens (targeted September 2027), KIAL Terminals station will be directly at the airport, with the full corridor to central Bengaluru targeted for March 2028.
What is the current construction status of the Blue Line?
As of August 2026, the airport metro is about 72% complete overall. The Outer Ring Road section (Phase 2A) is the most advanced, while the 11 km KR Puram–Hebbal stretch is the slowest — it lost roughly nine months after a January 2023 girder-launching accident in HBR Layout and remains the corridor's critical bottleneck. Deputy CM D.K. Shivakumar has publicly warned Blue Line contractors that no new work will be awarded if deadlines slip further. No section is open to passengers yet.
When will the ORR (Silk Board–KR Puram) section open?
The Outer Ring Road section — Phase 2A, 13 stations from Central Silk Board to KR Puram — was originally targeted for late 2026, but BMRCL has confirmed 2026 commercial operations are no longer feasible. Pending works at Central Silk Board (the train-reversal viaduct), Ibbalur and the Baiyappanahalli depot link line have pushed it into 2027, ahead of the airport extension (Phase 2B).
Which IT parks and tech corridors will the Blue Line serve?
Phase 2A runs the length of the Outer Ring Road tech belt — one of Bengaluru's densest employment corridors. Its stations serve Bellandur, Kadubeesanahalli and Devarabeesanahalli (Embassy TechVillage, Cessna Business Park, Ecospace), Marathahalli and ISRO, before reaching KR Puram. Phase 2B then extends north to Hebbal and Yelahanka toward the airport. It will be the first metro to directly connect the ORR IT clusters, which today depend almost entirely on road traffic.
What are the airport-end stations on the Blue Line?
The line ends at the airport with two dedicated stations — Airport City and KIAL Terminals — the latter located right at Kempegowda International Airport's terminal complex. These are the final two stops of Phase 2B, part of the Hebbal–airport section targeted for 2027.
Is there a Blue Line metro route map?
Yes — you can see the Blue Line plotted alongside every operational and under-construction corridor on the interactive Namma Metro map, and this page lists all Blue Line stations in order. On the map the line runs from Central Silk Board east along the ORR to KR Puram, then north via Hebbal and Yelahanka to Kempegowda International Airport.