Log into your Airbnb account. If you have multiple listings, make sure to select the correct listing, from which you want to export calendar.

Locate the Availability link in the menu and click on it.

Scroll down closer to the bottom of the Availability page, until you see Sync Calendars section. Click on Export Calendar.

When the Export Calendar dialog opens, hold you mouse over the start of the link, click, hold and drag until all the link is selected. Then right-click on the selected link and choose Copy. You Export Airbnb Calendar link will look like this:

https://www.airbnb.com/calendar/ical/17681602.ics?s=0841336562d7ab47aedb08890c82