The Metropolitan Police said it had attended a security alert at the Vue cinema in the shopping complex attached to the station. Local officers in Hammersmith and Fulham later said it was not suspicious.
A Met spokesman said the station re-opened shortly after 4pm, but Transport for London appeared to contradict this. A TfL spokeswoman said the station was due to re-open at about 5pm.
It came a day after 29 people were injured in a bomb blast at Parsons Green.
Extra police are on the streets amid heightened security and authorities have urged extra vigilance.
Terror attack at Parson's Green – in pictures
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The UK’s terror threat level has been raised to “critical”, meaning the Government believes a fresh attack is imminent.
Vue has been contacted for comment.
Elsewhere, investigators have descended on a house in Sunbury-on-Thames, Surrey, in connection with the bombing, following the arrest of an 18-year-old man in Dover.
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