Cannot delete Declined calendar invite

I had the same issue and finally figured it out this morning!

‘Long press’ on the calendar entry you want to get rid of and a menu will pop up.

The pop up includes an option to delete a single entry, future occurrences or all the reoccurring events.

Hope it works the same for anyone else with this problem

Have a great day!

Hey there Will Munroe,

Thanks for reaching out to Apple Support Communities. We'll be happy to help with Calendar events. We know how important it is to be able to stay organized and clear up those notifications.

Check your settings and make sure "Show declined events" is not enabled: Set up multiple calendars on iPhone - Apple Support

If you still need help, let us know which device you're using. Is that device up to date? Is the Yahoo Calendar something you need to have enabled for other incoming events or could you disable Calendars for that account?

Take care.

this is happening for me too, it’s a spam invite that doesn’t even show up in my inbox when i search for it. I click “Decline” and nothing happens. I’ve made sure the “Show declined events” is not enabled. This notification is showing up in my “Inbox” tab and won’t go away—it’s definitely spam so I don’t want to accidentally click one of the links. How do I get it to go away?

The recurring appointment on my calendar that I was having trouble deleting was tied to my Outlook account. Once I deleted calendar updates there. The recurring appointment went away.