Ryanair says it will cancel 20 flights during the next strike by Dublin-based pilots.
They've announced they'll walk off the job on Bank Holiday Friday August the 3rd in an ongoing row over working conditions.
The airline says it will text or email affected passengers.
Tourism bosses hope stoppages at Ryanair won't put people off visiting here.
The latest figures show five million tourists came to Ireland in the first half of this year.
Niall Gibbons from Tourism Ireland is hoping those numbers continue to grow.
"Ryanair have been really accountable for strong European growth in the last ten years, so hopefully these things get resolved", he said.
He pointed out that "in excess of 40% of people who come to Ireland come with Ryanair, so they are a key partner from a tourism perspective".