Question: When does season 4 of the flash come on?
Disambiguated questions and answers: question: When does season 4 of The Flash come on The CW in the US and CTV in Canada?
When does season 4 of The Flash come on Netflix?
When does season 4 of the The Flash come on in the UK & Ireland?
answer: October 10, 2017
late May 2018
October 17, 2017
Natural Questions answer: October 10 , 2017 (from the Wikipedia article "The Flash (season 4)")