Can I reset Instagram password using Facebook account?

You can reset your Instagram account password using Facebook account if you have logged in with Facebook account. 

1. Open the app. 
2. Instagram will ask you to log in or sign up. Tap on forget the password.  
3. Tap on Facebook option. Instagram will ask you to login to your Facebook account. Log in to Facebook account.  You can continue with your Instagram account. You can reset password with adding new password.