How Do I Redirect My Old URL Post To A New URL In A Blogger Blog?

Go to Blogger Dashboard > Settings.

Scroll to Errors and Redirects > Custom Redirects.

Click “New Redirect”.

Enter the old URL path (e.g., /2020/05/old-post.html) in the "From" field.

Enter the new URL path (e.g., /2024/04/new-post.html) in the "To" field.

Check "Permanent" and click OK, then Save.

Using the Blogger interface:
Go to your Blogger dashboard.
Click on the Posts tab.
Find the post with the old URL.
Click on the Edit button.
Go to the Blogger website and log in to your account.
Select Your Blog:
- Choose the blog where you want to set up the redirect.
Go to Settings:

IT SUPPORT NEW YORK did an amazing job of explaining this in an above comment. Same method I use

There are a few ways to redirect an old URL to a new URL in a Blogger blog:
1. Using the Blogger interface:
Go to your Blogger dashboard.
Click on the Posts tab.
Find the post with the old URL.
Click on the Edit button.
In the Post settings section, find the Permalink field.
Replace the old URL with the new URL.
Click on the Update button.

It's best to add a 301 redirect

To redirect an old URL to a new URL in a Blogger blog, you can use a simple method involving a custom redirect. Here’s how to do it:

Step-by-Step Guide:

Log in to Blogger:
- Go to the Blogger website and log in to your account.
Select Your Blog:
- Choose the blog where you want to set up the redirect.
Go to Settings:
- In the left sidebar, click on Settings.
Custom Redirects:
- Scroll down to the Search preferences section.
- Look for Custom redirects and click on Edit.
Create a N