Delete Amazon EC2 terminated instance

Solution 1:

Terminated instances will go away after a few hours. There is nothing you can do to manually remove them.

Not to worry, you won't get billed for it.

Solution 2:

Just want to add a note to the AWS docs on the topic:

Terminate Your Instance

You can delete your instance when you no longer need it. This is referred to as terminating your instance. As soon as the state of an instance changes to shutting-down or terminated, you stop incurring charges for that instance.

You can't connect to or restart an instance after you've terminated it. However, you can launch additional instances using the same AMI.

Instance Termination

After you terminate an instance, it remains visible in the console for a short while, and then the entry is automatically deleted. You cannot delete the terminated instance entry yourself.

http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/terminating-instances.html