Can you retrieve deleted calendar entries OWA outlook? - Yes

Can you retrieve deleted calendar entries OWA outlook? - Yes

Sign in to your Outlook Web account. Select the “Deleted Items” folder from the folder list (1.).
Then select “Recover deleted Items from this folder” (2.).

Choose the item that you want to retrieve and ‘Right click’ (3.)

You will be presented with 3 options, one of which is ‘Restore’. For example, I am recovering a calendar event I deleted earlier.
Select ‘Restore’ and the deleted item should be restored back to its original location in the calendar.
(Restored event now in the calendar)

Finished