M11 (Istanbul Metro)

Line M11, officially referred to as the M11 Gayrettepe–Istanbul Airport–Halkalı Metro Line (Turkish: Gayrettepe-İstanbul Havalimanı-Halkalı Metro Hattı), is a rapid transit line of the Istanbul Metro, currently under construction in Istanbul, Turkey. The line is currently planned to open in August 2021. 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.

M11 (Istanbul Metro)

Line M11, officially referred to as the M11 Gayrettepe–Istanbul Airport–Halkalı Metro Line (Turkish: Gayrettepe-İstanbul Havalimanı-Halkalı Metro Hattı), is a rapid transit line of the Istanbul Metro, currently under construction in Istanbul, Turkey. The line is currently planned to open in August 2021. 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.