(500) Days of Summer - watch online: streaming, buy or rent
Currently you are able to watch "(500) Days of Summer" streaming on Disney Plus, Hollywood Suite, Hollywood Suite Amazon Channel. It is also possible to buy "(500) Days of Summer" on Apple TV, Cineplex, Microsoft Store, Amazon Video as download or rent it on Apple TV, Microsoft Store, Amazon Video, Cineplex online.
You can also stream the title for free on Hoopla.