Hello, erma273! Thanks for reaching out to Apple Support Communities.
We've reviewed your question and it looks like you are seeking assistance with deleting old boarding passes from your Apple Wallet app. It's understandable that you'd want this resolved, so allow us to assist with that. Please start by taking a look here: How to use Wallet on your iPhone, iPod touch, and Apple Watch. The section titled “How to remove a pass from Wallet” should assist you with removing them.
If this does not resolve the issue or if you have follow-up questions, please let us know. We're here for you. Have a fantastic day!