Released July 9th, 2021, 'Black Widow' stars Scarlett Johansson, Florence Pugh, Rachel Weisz, David Harbour The PG-13 movie has a runtime of about 2 hr 14 min, and received a user score of 74 (out of 100) on TMDb, which collated reviews from 8,048 knowledgeable users. Now, before we get into the nitty-gritty of how you can watch 'Black Widow' right now, here are some particulars about the Marvel Studios action flick. Below, you'll find a number of top-tier streaming and cable services - including rental, purchase, and subscription options - along with the availability of 'Black Widow' on each platform when they are available. Need to watch ' Black Widow' on your TV, phone, or tablet? Hunting down a streaming service to buy, rent, download, or watch the Cate Shortland-directed movie via subscription can be difficult, so we here at Moviefone want to do the heavy lifting.