Step 1) Login Blogger.com then go to the blog post and Edit it.
Step 2) Switch to “HTML” mode by clicking on Tab Above besides “Compose“.
Step 3) Now go to the bottom of your code the paste following code to redirect to the desired URL.
window.location = "http://www.example.com/your-new-url-to-redirect-when-this-post-loads";
Then click on Update… It’s Done …