Method 1- Using IRCTC website-

You cant deactivate your account from the IRCTC app.

But in the new nget website you can delete your account.

Here are the steps-

1. Go to https://www.irctc.co.in/nget/
2. Login into your IRCTC website-
3. Make your browser smaller in size by dragging the border of your browser.Now you will be able to see a horizontal striped button on the top of your browser.
4. Click on that horizontal striped button and click on My account-> Suspend user.
5. Enter your login password and click on suspend user.

Method 2-Emailing irctc customer care.

Send an email to care@irctc.co.in from your registered email id with sublect line: deletion of account. In the body mention your email id , phone number and request to delete your account.

Method 3- Call irctc customer care number -

Call 0755-6610661 for hindi and 0755-3934141 and request them to delete your irctc account