How to import .ics file in Outlook

Fastest on iPhone: import with ICSKit and set your Outlook calendar as default.

On iPhone with ICSKit (recommended)

  1. On iOS, set your Default Calendar to your Outlook calendar (Settings → Calendar → Default Calendar).
  2. Download the .ics file into the Files app.
  3. Open ICSKit.
  4. Select the .ics file and preview events.
  5. Tap Add to import. Events are added to the Outlook calendar.