Mumbai Metro Line 7A
As of 17 Oct 2026, Mumbai Metro Line 7A is under construction. Latest news: 14 Oct 2026.
Mumbai Metro Line 7A is a 3.42 km extension of Line 7 (Red Line) from Gundavali in Andheri East to Terminal 2 of Chhatrapati Shivaji Maharaj International Airport, built by MMRDA. It adds two stations, Airport Colony (elevated) and CSMIA Terminal 2 (underground). As of October 2026 it is not open: tunnelling is complete, but work near Airport Colony is held up by an airport height-clearance issue.
Why it matters
Line 7A gives the Red Line a direct rail link into the international airport terminal. At CSMIA Terminal 2 it meets the underground Line 3 (Aqua Line), with the two stations linked at concourse level, so passengers from the western suburbs on Lines 2A, 7 and the future Line 9 can reach the airport or change to Line 3 without using the Western Express Highway. MMRDA has said the link could cut airport travel times by 30 to 60 minutes.
Key facts
- Operator: MMRDA
- Length: 3.42 km, 3 stations
- Status (October 2026): Under construction, not open (October 2026). Twin-tunnel boring finished in July 2025 and the elevated viaduct was complete by February 2026, but work on the elevated stretch near Airport Colony has been held up since 2025 because the overhead electrification needs more height than the Airports Authority of India (AAI) has cleared. MMRDA is awaiting AAI's final technical assessment; no revised opening date has been announced.
- Cost: About ₹812 crore (escalated estimate, reported 2025)
Mumbai Metro Line 7A stations
The 3 stations below run from Gundavali to CSMIA Terminal 2. Interchanges are listed where a station connects with another line or a railway station.
| # | Station | Type | Connects to |
|---|---|---|---|
| 1 | Gundavali | Elevated | Line 7 (Red) terminus / Line 1 (Blue) |
| 2 | Airport Colony | Elevated | |
| 3 | CSMIA Terminal 2 | Underground | Line 3 (Aqua) |
Sections and opening dates
| Section | Stations | km | Status | Opened or expected |
|---|---|---|---|---|
| Gundavali to CSMIA Terminal 2 | 2 | 3.42 | Under construction; elevated stretch near Airport Colony on hold pending AAI height decision | not announced (earlier target December 2026) |
Explore more
Official source: mmrda.maharashtra.gov.in
Latest updates
56 tenders tracked →Phases
| Phase | Lines | Stations | Length (km) | Status |
|---|---|---|---|---|
| Gundavali to CSMIA Terminal 2 | Gundavali to CSMIA Terminal 2 | 2 | 3.42 | Under construction; elevated stretch near Airport Colony on hold pending AAI height decision |
Milestones
- Maharashtra cabinet approves extending Line 7 to the airport
- J Kumar Infraprojects gets letter of acceptance for package CA-48 (Line 9 and Line 7A civil works), worth ₹1,998 crore
- Civil work on Line 7A begins
- MMRDA and AAI sign an MoU, as much of the alignment runs through airport land
- TBM Disha (T62) starts boring the first tunnel from the Terminal 2 station shaft
- TBM Dhruv (T60) starts boring the second tunnel
- AAI height NOC for the Airport Colony station and ramp comes in about 2.9 m lower than the design needs; MMRDA seeks a relaxation
- TBM Disha breaks through at Airport Colony
- TBM Dhruv breaks through at the Airport Colony shaft, completing tunnelling
- Elevated viaduct complete and elevated ramp about 95% built, per MMRDA data
- MMRDA confirms more than ₹250 crore of civil works near Airport Colony may need to be rebuilt if AAI does not clear the extra height, and blames general consultant SYSTRA-CEG-SMCIPL
- AAI's final technical assessment of the permissible height still pending
Frequently asked questions
Is Mumbai Metro Line 7A open?
No. As of October 2026 the line is still under construction and no opening date has been announced.
What is the route of Metro Line 7A?
It runs about 3.42 km from Gundavali in Andheri East, the current end of Line 7, to Terminal 2 of Chhatrapati Shivaji Maharaj International Airport. About 0.93 km is elevated and 2.49 km is in twin tunnels.
How many stations does Line 7A have?
Two new stations: Airport Colony (elevated, in Vile Parle East) and CSMIA Terminal 2 (underground).
Why is Line 7A delayed?
The overhead electrification on the elevated stretch near Airport Colony needs up to about 2.4 to 2.5 m more height than the Airports Authority of India has permitted. MMRDA is waiting for AAI's final technical assessment, and part of the viaduct may have to be rebuilt if extra height is not allowed.
Will Line 7A connect to Metro Line 3?
Yes. The CSMIA Terminal 2 station of Line 7A runs parallel to the Line 3 (Aqua Line) station at the airport and the two are linked at concourse level.
Who is building Line 7A?
MMRDA is the implementing agency. Civil works, including the tunnels, ramp and both stations, are under package CA-48 awarded to J Kumar Infraprojects in September 2019.
Journey Planner & Route Map
Awarded tenders & contracts
No awarded tenders or contracts recorded yet.
Ongoing tenders
| Tender | Agency | Value | Bid due | Status |
|---|---|---|---|---|
| MahaMetro invites maintenance tender for Navi Mumbai Metro Line-1 | Maha Metro | Open | ||
| MRVC invites bids for electrification work in Borivali-Virar Section of Western Railways | MRVC | Subscribers | Under evaluation | |
| Maha Metro floats Rs 3.54 cr tender for Navi Mumbai Metro Line 1 maintenance | Maha Metro | Subscribers | Subscribers | Under evaluation |
Upcoming tenders
No upcoming tenders announced yet.
Bid values, closing dates and awardees are for subscribers. See plans.