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M11 Gayrettepe–Istanbul Airport–Halkalı
Istanbul Airport Station
Gayrettepe - Kargo Terminali

Under Construction
Kargo Terminali - Halkalı

Terminal 2 Station

Owner Ministry of Transport and Infrastructure
Line numberM11
Locale Istanbul, Turkey
  • Gayrettepe
  • Halkalı
Type Rapid transit
System Istanbul Metro
Operator(s) TCDD Taşımacılık
Rolling stock176 CRRC Zhuzhou [1]
Opened22 January 2023; 13 months ago (2023-01-22) (Kağıthane - Istanbul Airport) [2]
29 January 2024; 28 days ago (2024-01-29) (Gayrettepe - Kağıthane) [3]
March 2024; 1 month's time (2024-03) (Kayaşehir - Istanbul Airport) [4]
Late 2024 (Halkalı - Kayaşehir) [5]
Line length69 km (43 mi)
Number of tracks2
CharacterAirport express
Track gauge1,435 mm (4 ft 8+12 in) standard gauge
Loading gaugeUIC standard gauge
Minimum radius200 metres (660 ft)
Electrification1,500 V DC Overhead line
Operating speed120 km/h (75 mph)

Line M11, officially referred to as the M11 Gayrettepe–Istanbul Airport–Halkalı Metro Line ( Turkish: Gayrettepe-İstanbul Havalimanı-Halkalı Metro Hattı), is a line of the Istanbul Metro. As of January 2024, it is operational between Gayrettepe and Istanbul Airport. [6] [7] The line is currently 37.5 km long, making it the longest line in the Istanbul Metro.


The purpose of this line is to provide direct and quick access from Istanbul Airport in Arnavutköy to Levent, Istanbul's main commercial center and to Halkalı, one of the city's most important train stations. Unlike other metro lines, the M11 will be a limited stop service, meaning that stations will be spaced further apart. This is most noticeable towards the line's southern ends, where the M11 will only have seven stations within Istanbul's urban area: Halkalı, Tema Park, Olimpiyat, Kayaşehir and Fenertepe in the west and Gayrettepe and Kâğıthane in the east.

It will have two legs, one from Gayrettepe to Istanbul Airport line and the second from Halkalı to Istanbul Airport line. The first leg of the rapid transit line will be 37.5 km (23.3 mi) long with nine stations. The second leg of the line will be 31.5 km (19.6 mi) long with seven stations, in a total of 69 km (43 mi) with sixteen stations. When fully completed, the M11 will be one of the longest continuous subway tunnels in the world. The travel time between the end stations will be 60 minutes at a maximum speed of 120 km/h (75 mph). [8] The line will run through six districts of Istanbul, Şişli, Kağıthane, Eyüpsultan, Arnavutköy, Başakşehir and Küçükçekmece. It is expected that the line will carry annually around 94 million passengers. The M11 line will connect to other rapid transit lines: Marmaray, M1, M2, M3, M7 (twice), M9 and at the airport to the high-speed train line. [9]


The investment budget of the construction is 999.8 million. The Turkish construction consortium Kolin-Şenbay won the tender for the building of the metro line in December 2016. The line was not scheduled to be completed before the airport's official October 29, 2018 airport opening. [8]

Rolling stock

The rolling stock was manufactured by CRRC Zhuzhou Locomotive, the first 120km/h class automated metro train exported by China. 176 metro cars were supplied for the Line 11. The contract was awarded in January 2020, and the delivery was completed six months later, [10] although these ten sets were not automated. On January 3, 2024 the Minister of Transport and Infrastructure, Abdulkadir Uraloğlu announced that 15 automated trainsets were ready to enter into use. [11]


The M11 has sixteen stations. Out of these sixteen, only eight are within the Istanbul metropolitan area.

No Station District Transfer Type Notes
1 Gayrettepe Şişli & Beşiktaş ( Gayrettepe) ( Zincirlikuyu)

İETT Bus: 25G, 27E, 27SE, 27T, 29, 29A, 29C, 29D, 29İ, 29P, 29Ş, 30A, 30M, 36L, 40B, 41AT, 41E, 42, 42M, 42Z, 43R, 49Z, 58A, 58N, 58S, 58UL, 59A, 59B, 59CH, 59K, 59N, 59R, 59S, 59UÇ, 62, 62G, 63, 64Ç, 65G, 121A, 121B, 121BS, 122B, 122C, 122D, 122Y, 251, 252, 256, 500A, 522, 522B, 522ST, 599C, 622, DT1, DT2, U1, U2

Underground Zincirlikuyu CemeteryBüyükdere AvenueZorlu Center・ Zincirlikuyu İETT Platforms
2 Kâğıthane Kâğıthane ( Kâğıthane) ( Kâğıthane)

İETT Bus: 41ST, 46Ç, 46T, 48, 48H, 48N, 48T, 50D, 62, 63, 64Ç, 65A, 65G, TM3

Kağıthane Creek・Kağıthane İETT Platforms
3 Hasdal Eyüpsultan İETT Bus: 48, 48A, 50G, H-2 D.020(New) Istanbul University (Çapa) Medical Faculty Hospital・Hasdal Barracks
4 Kemerburgaz İETT Bus: 48, 48A, 48C, 48D, 48G, 48K, 48KA, 48L, 48P, 48R, 50G Kasımpaşa SK Kemerburgaz Facilities・Kemerburgaz City Forest・Consulate General of Turkmenistan
5 Göktürk İETT Bus: 48, 48A, 48C, 48D, 48G, 48K, 48KA, 48L, 48P, 50G Istanbul Regional Directorate of Forestry Göktürk Nursery
6 İhsaniye İETT Bus: 48KA, 48M, 48P İBB Biomethanization Facility
7 Terminal 2 Arnavutköy ( İstanbul Airport) ( İstanbul Airport High Speed Train Terminal)

İETT Bus: H-1, H-2, H-3, H-6, H-7, H-8, H-9

Station Not In Operation - Passing
8 İstanbul Havalimanı (Airport) Istanbul Airport・Ali Kuşçu Mosque
9 Kargo Terminali (Cargo Terminal) Istanbul Airport・ THY Cargo IGA Facilities
↓↓ U2

Under Construction (est. opening March 2024) ↓↓

10 Taşoluk Arnavutköy İETT Bus: 36AS, 36D, 36HT, 36YS, 336A, 336G, 336H, 336T, H-6 Underground Depot・Ministry of Forestry Plantation Site
11 Arnavutköy İETT Bus: 36AS, 36AY, 36B, 36CB, 36D, 36HT, 36TC, 36Y, 36YS, 48KA, 48M, 336, 336A, 336G, 336H, 336K, 336M, 336MC, 336T, ARN1, H-6, MK22 Arnavutköy State Hospital・Arnavutköy City Park・Arnavutköy İETT Platforms
12 Fenertepe Başakşehir İETT Bus: 36B, 36CB, 36F, 36HT, 36TC, 36Y, 78B, 78C, 78E, 78F, 78FB, 78G, 78H, 78ZB, 78Ş, 79C, 79F, 79FY, 79GE, 79KM, 79KT, 79M, 98, 98KM, 146BA, 146F, 146K, 336, 336A, 336G, 336H, 336K, 336M, 336MC, 336T, H-6, MK31 İbn Haldun University Main Campus・Fenertepe İETT Platforms
13 Kayaşehir Merkez ( Kayaşehir Merkez)

İETT Bus: 36F, 78E, 78F, 79F, 79FY, 79GE, 79KM, 79KT, 79M, 146BA, 146F, MK1, MK22

Başaksehir National Garden
↓↓ Under Construction (opening late 2024) ↓↓
14 Olimpiyat Başakşehir ( Olimpiyat)

İETT Bus: 36AS, 36AY, 36F, 76A, 79FY, 79K, 79Ş, 142E, 144M, 146A, 146T, HS1, MK2, MK11, MK12, MK13, MK14, MK15, MK16

Underground Atatürk Olympic Stadium・Olimpiyatköy İETT Platforms
15 Halkalı Stadı Küçükçekmece ( Tema Park)

İETT Bus: 76V, 78G, 78Ş, 89A, 89K, 98S, 141M, 89YB, HT1, HT2, KÇ2, MK31, MR40, MR50, MR51

İBB Halkalı Football Stadium Sports Facilities・İstanbul Tema Hospital
16 Halkalı ( Halkalı)・ ( Halkalı)

İETT Bus: 79Y, 89A, 143, BN1, H-3, MR40, MR42, MR50, MR51

TCDD Lodgings・Halkalı Customs Directorate・Halkalı Marmaray İETT Platforms


  1. ^ "Istanbul airport metro train contract awarded". Railway Gazette International. April 28, 2020. Retrieved 2020-05-13.
  2. ^ "Türkiye'nin "en hızlı metrosu" Kağıthane-İstanbul Havalimanı Metrosu hizmete girdi" (in Turkish). Anadolu Agency.
  3. ^ "İstanbul'a sürücüsüz metro! Ulaşım süresi 30 dakikaya düşüyor". Milliyet (in Turkish). 2024-01-03. Retrieved 2024-01-04.
  4. ^ Garip, Ergin (2023-10-30). "Bakan Uraloğlu: İstanbul Havalimanı-Kayaşehir metro hattı kesimini Mart 2024'ten önce açacağız". Anadolu Agency. Retrieved 2023-12-07.
  5. ^ "İstanbul Havalimanı-Kayaşehir metro hattı ne zaman açılacak?". NTV (in Turkish). Retrieved 2024-01-04.
  6. ^ "İstanbul Havalimanı Metrosu açılıyor: 'Raylı sistemlerle entegre olacak'". BBC Türkçe. 22 January 2023. Retrieved 22 January 2023.
  7. ^ "İstanbul Airport metro opens". Rail Turkey. 2023-01-18. Retrieved 2023-01-22.
  8. ^ a b "3. Havalimanı'na Metroyu Şenbay ve Kolin götürecek". Yeni Şafak (in Turkish). 2016-12-03. Retrieved 2017-08-15.
  9. ^ "3. Havalimanı metro hattında ihale yapıldı". Habertürk (in Turkish). 2016-05-20. Retrieved 2017-08-14.
  10. ^ Burroughs, David (28 July 2020). "CRRC completes first Istanbul automated metro train". International Railway Journal.
  11. ^ Özen, Ege Buğra (2024-01-03). "İstanbul Havalimanı'na yerli metro". AirTurkHaber (in Turkish). Retrieved 2024-01-04.