No, we can't integrate JIRA Portfolio with Team calendars, but your idea is pretty good. So I took the liberty to raise a feature request for you as you can see here:
I would strongly suggest that you vote on this issue to increase its popularity and add it to your watchlist for future updates. I also suggest you to comment in the bug, that way our Bugmaster can see how this problem is impacting your business.
Hello, Community! My name is Gosia and I'm a Product Manager on Jira Server and Data Center here at Atlassian. Since 2002 when we launched our public issue tracker, jira.atlass...
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