Instagram allows you to share photos and videos to another social networking sites such as Flickr, Facebook, Foursquare, Tumblr and Twitter. To share Instagram photos and videos to Flickr, you need to link or connect your Instagram account to Flickr account. Once you have connected your accounts, you will get an option to share photos and videos to Flickr when you are posting them to Instagram account. If you want to stop sharing them from Instagram to Flickr using iOS device, open "Instagram" account and go to your profile page. Tap "Settings" and then tap "Linked Accounts" tab. Tap "Flickr" and then tap "Unlink" button to stop sharing photos and videos from Instagram to Flickt on iOS device.