Route G18 at a Glance
| Detail | Information |
| Route Number | G18 (MTC Chennai) |
| From | Thiagaraya Nagar (T. Nagar) Bus Depot |
| To | Guduvanchery (Kancheepuram District) |
| Route Corridor | Via Saidapet, Concorde (Race Course / Raj Bhavan), Guindy RS, St Thomas Mount PO, Meenambakkam Old Airport, Thirusoolam National Airport, Pallavaram, Chromepet, T.B. Sanatorium, Tambaram, Irumbuliyur, Perungulathur, Vandalur, Vandalur Zoo, Urapakkam School, Palakka Company |
| Distance | Approximately 30.6 kilometres |
| Total Stops | 18 named stops |
| Journey Time | Approximately 75 to 95 minutes |
| Daily Trips from T. Nagar | Approximately 45 trips per day (every 12 minutes) |
| Daily Trips from Guduvanchery | Approximately 45 trips per day |
| First Bus from T. Nagar | 5:00 AM |
| Last Bus from T. Nagar | Approximately 9:30 PM |
| First Bus from Guduvanchery | 5:00 AM |
| Last Bus from Guduvanchery | Approximately 9:30 PM |
| Frequency | Every 12 minutes — significantly higher frequency than 70V for the same GST Road southern corridor |
| Operating Days | All 7 days including Sundays and public holidays |
| Bus Type | Ordinary service. The G prefix indicates Guindy depot operation |
| Starting Fare | Rs 6 (Ordinary minimum) |
| Why Route G18 matters | Route G18 is the high-frequency alternative to Route 70V for the southern GST Road corridor. Starting from T. Nagar instead of CMBT, it provides 12-minute frequency to the airport zone, Tambaram, Vandalur Zoo, and Guduvanchery — making it far more practical than 70V for day-to-day travel from the T. Nagar, Saidapet, and Guindy belt |
Route G18 vs Route 70V: Key Differences
| Aspect | G18 | 70V |
| From | T. Nagar | CMBT (Koyambedu) |
| Frequency | Every 12 minutes | Every 2 hours |
| Daily trips | ~45 trips | ~9 trips |
| Airport stop? | Yes (Thirusoolam) | Yes (Thirusoolam) |
| Vandalur Zoo? | Yes | Yes |
| Guduvanchery? | Yes | Yes |
| GST Road coverage | Saidapet to Guduvanchery | KK Nagar to Guduvanchery (via Vadapalani) |
| Best for | T. Nagar / Saidapet / Guindy residents for regular south GST travel | CMBT / K.K. Nagar users needing a direct connection south |
All 18 Stops with Landmarks
Route G18 shares much of its corridor with Route 18A (Broadway to Tambaram via GST Road) and Route 70V. The description below focuses on stops unique to or especially significant for G18 users.
| Zone 1: T. Nagar to Guindy (Stops 1 to 5) |
| Stop 1 T. Nagar (Thiagaraya Nagar) | |
| What it is | Origin terminus at Chennai’s most famous retail and commercial district |
| Key landmarks | Pondy Bazaar (Tamil Nadu’s busiest retail street), T. Nagar bus depot, Panagal Park, Saravana Stores, Usman Road textile zone, jewellery shops |
| Metro | T. Nagar Metro Phase 2 — verify operational status at cmrl.in |
| Why T. Nagar is the best boarding point | G18 from T. Nagar is the highest-frequency MTC bus to the Chennai Airport, Tambaram, and Vandalur Zoo from one of Chennai’s most central and accessible locations |
| Stop 2 Saidapet | |
| What it is | Major South Chennai transit junction |
| Key landmarks | Saidapet bus stand, Saidapet RS (suburban trains), DMS Junction area |
| Rail | Suburban trains to Chennai Beach and Tambaram |
| Why it matters | Saidapet residents boarding G18 get the highest-frequency bus to the airport (12-min headway) — far better than Route 18A’s 57-minute interval from Broadway |
| Stop 3 Concorde (Race Course / Raj Bhavan) | |
| What it is | Landmark stop near the Race Course and Governor’s residence |
| Key landmarks | Madras Race Club, Raj Bhavan (Governor’s official residence), Park Hyatt Chennai, Race Course Road junction |
| Stop 4 Guindy RS (Guindy Railway Station) | |
| What it is | Suburban rail interchange stop in Guindy |
| Key landmarks | Guindy Railway Station (suburban trains on Chennai Beach-Tambaram line), Anna University main campus approach, Guindy National Park (India’s smallest national park in an urban setting — 270 acres within city limits), Guindy Industrial Estate |
| Rail | Suburban trains to Chennai Beach, Saidapet, Tambaram |
| Note | Guindy National Park within the city is one of Chennai’s most unusual natural landmarks — a forested zone with blackbuck, spotted deer, and reptiles within the Guindy Estate campus |
| Stop 5 St Thomas Mount PO | |
| What it is | Historic pilgrimage landmark stop |
| Key landmarks | St Thomas Mount (hillock with 16th-century Portuguese church housing a relic of St Thomas the Apostle, panoramic views of airport runway approach), Mount RS (suburban train) |
| Heritage | One of India’s oldest churches, associated with the apostle tradition |
| Zone 2: Airport Corridor (Stops 6 to 8) |
| Stop 6 Meenambakkam Old Airport | |
| What it is | Historic Meenambakkam aerodrome area |
| Key landmarks | Old airport complex, IAF/government aviation infrastructure |
| Stop 7 Thirusoolam National Airport (Chennai Airport) | |
| What it is | The most significant stop on Route G18 — direct airport access |
| About the airport | Chennai International Airport (IATA: MAA) — Tamil Nadu’s only international gateway. Domestic and international terminals. Airport Metro Station (Blue Line) adjacent |
| Budget travel note | G18 is the cheapest and most frequent MTC bus to the airport from T. Nagar and Saidapet (12-minute headway). Fare approximately Rs 10 to Rs 13 from T. Nagar to airport. Far cheaper than taxi/auto |
| Warning | Always verify G18 timing before airport travel — confirm the next bus well in advance. For tight schedules, Metro from T. Nagar (Phase 2) or Saidapet is recommended |
| Zone 3: Pallavaram to Tambaram (Stops 8 to 11) |
| Stop 8-11 Pallavaram / Chromepet / T.B. Sanatorium / Tambaram | |
| What it is | GST Road suburban stops |
| Key landmarks | Pallavaram RS, Chromepet RS, Tambaram Sanatorium Hospital, Tambaram RS (major junction for suburban trains) |
| Rail | All stops on the Chennai Beach-Tambaram-Chengalpattu suburban line |
| Zone 4: Deep South — Vandalur and Guduvanchery (Stops 12 to 18) |
| Stop 12-13 Irumbuliyur / Perungulathur | |
| What it is | Deep south GST Road residential zones |
| Key landmarks | Growing residential and light industrial settlements on GST Road south of Tambaram |
| Stop 14 Vandalur | |
| What it is | Gateway to Vandalur Zoo |
| Key landmarks | Vandalur town, Vandalur RS (suburban trains), Sri Venkateswara University of Law approach |
| Rail | Vandalur RS: suburban trains to Tambaram and Chengalpattu |
| Stop 15 Vandalur Zoo | |
| What it is | India’s largest zoo — a major day trip destination |
| About the zoo | Arignar Anna Zoological Park (1,490 acres) — largest zoo in India. Bengal Tigers, Asian Elephants, White Tigers, Giraffes, and 170+ species. Open 9 AM to 5:30 PM, closed Tuesdays |
| Why G18 matters here | G18’s 12-minute frequency from T. Nagar makes it far more convenient for zoo day trips than Route 70V (2-hour interval). A family can realistically plan a zoo trip using G18 without long waits |
| Stop 16-17 Urapakkam School / Palakka Company | |
| What it is | Deep south GST Road intermediate stops |
| Key landmarks | Urapakkam residential and school area, Palakka Company local industrial landmark, approaching Guduvanchery |
| Stop 18 Guduvanchery (Final Stop) | |
| What it is | Southern terminus in Kancheepuram District |
| About Guduvanchery | Rapidly growing suburb on GST Road, approximately 30 km from T. Nagar. Junction for Singaperumal Koil and Maraimalai Nagar Industrial Estate |
| Key landmarks | Guduvanchery town centre, GST Road junction, Guduvanchery RS (suburban trains) |
| Real estate | Guduvanchery has emerged as an affordable residential option for workers in the Kancheepuram and Maraimalai Nagar industrial zones, with apartment prices at Rs 4,000 to Rs 6,500 per sq ft in 2026 |
Bus Fare Chart for Route G18
Route G18 operates as an ordinary service. The G prefix indicates Guindy depot. Minimum fare Rs 6. All fares include cess of Rs 1.
| Stage | Ordinary (Rs) | Express (Rs) | Deluxe (Rs) | Night (Rs) |
| 1 | 6 | 8 | 12 | 10 |
| 2 | 7 | 10 | 14 | 12 |
| 3 | 8 | 11 | 16 | 14 |
| 4 | 9 | 13 | 18 | 16 |
| 5 | 10 | 14 | 20 | 18 |
| 6 | 11 | 16 | 22 | 20 |
| 7 | 12 | 17 | 24 | 22 |
| 8 | 13 | 19 | 26 | 24 |
| 9 | 14 | 20 | 28 | 26 |
| 10 | 15 | 22 | 30 | 28 |
| 11-12 (Full route) | 16 | 23 | 32 | 30 |
| Practical Fare Guide | T. Nagar to Saidapet (approx. 5 km): Rs 7 to Rs 9 T. Nagar to Guindy RS (approx. 8 km): Rs 8 to Rs 11 T. Nagar to Chennai Airport / Thirusoolam (approx. 12 km): Rs 9 to Rs 13 T. Nagar to Tambaram (approx. 20 km): Rs 11 to Rs 15 T. Nagar to Vandalur Zoo (approx. 25 km): Rs 12 to Rs 17 T. Nagar to Guduvanchery (30.6 km, full route): Rs 13 to Rs 19 Monthly pass: Rs 2,000 unlimited MTC pass covers Route G18 |
Who Uses Route G18
T. Nagar and Saidapet Residents to Airport
G18 is the most frequent MTC bus (12-minute headway) from T. Nagar and Saidapet to Chennai Airport. Budget-conscious travellers with flexible timing use G18 instead of taxis — saving hundreds of rupees on airport transfers.
Zoo Visitors from T. Nagar and Guindy
Vandalur Zoo is one of Chennai’s most popular family destinations. Route G18’s 12-minute frequency from T. Nagar makes it the most practical MTC option for zoo day trips from this part of the city.
Deep South GST Corridor Commuters
Residents of Irumbuliyur, Perungulathur, Urapakkam, and Guduvanchery use G18 daily for access to T. Nagar, Saidapet, Guindy, and the central city. G18 is their primary and most frequent direct link.
Tambaram Rail Passengers from T. Nagar
T. Nagar residents who need to catch trains from Tambaram (to Chengalpattu, Villupuram, Kancheepuram) use G18 for a direct T. Nagar to Tambaram connection avoiding transfers.
Traveller Tips
- Route G18 runs every 12 minutes — significantly more frequent than Route 70V (every 2 hours) on the same southern corridor. If travelling from T. Nagar or Saidapet to the airport or zoo, always prefer G18.
- For airport travel, G18 is economical but confirm the next bus 30 to 45 minutes before you need to reach the airport. The journey from T. Nagar to Thirusoolam is approximately 35 to 45 minutes without peak-hour traffic.
- The G prefix indicates Guindy depot operation — the bus is often well-maintained and on schedule given shorter depot turnarounds.
- At Tambaram, you can board G18 mid-route from Tambaram bus stand for onward travel to Vandalur or Guduvanchery.
- Vandalur Zoo is closed on Tuesdays. Verify before planning a zoo trip on G18.
- Verify timings at mtcbus.tn.gov.in. Moovit app for real-time tracking.
Last updated: April 2026. MTC may change route timings, stops, and fares without notice. Always verify current information at mtcbus.tn.gov.in before travel.