#FlyTheW has popped up more than 620,000 times since the postseason began, the Cubs say. ... 'W' Flags Taking Over Chicago As Cubs Ready To Host NLCS. October 19, 2015 / 3:23 PM CDT / CBS Chicago ...

Some Chicago rooters were taken aback when they had to check their flags, but the policy isn't new. ... Cubs fans’ ‘W’ flags run afoul of Nationals policy on banners. October 7, 2017.