Question: when does the champions league group stage start
Answer: Phase Round Draw date First leg Second leg Qualifying First qualifying round 19 June 2017 27 -- 28 June 2017 4 -- 5 July 2017 Second qualifying round 11 -- 12 July 2017 18 -- 19 July 2017 Third qualifying round 14 July 2017 25 -- 26 July 2017 1 -- 2 August 2017 Play - off Play - off round 4 August 2017 15 -- 16 August 2017 22 -- 23 August 2017 Group stage Matchday 1 24 August 2017 ( Monaco ) 12 -- 13 September 2017 Matchday 2 26 -- 27 September 2017 Matchday 3 17 -- 18 October 2017 Matchday 4 31 October -- 1 November 2017 Matchday 5 21 -- 22 November 2017 Matchday 6 5 -- 6 December 2017 Knockout phase Round of 16 11 December 2017 13 -- 14 & 20 -- 21 February 2018 6 -- 7 & 13 -- 14 March 2018 Quarter - finals 16 March 2018 3 -- 4 April 2018 10 -- 11 April 2018 Semi-finals 13 April 2018 24 -- 25 April 2018 1 -- 2 May 2018 Final 26 May 2018 at NSC Olimpiyskiy Stadium , Kiev