Ryanair pilots are on strike this morning.
The airline has cancelled 30 of 290 scheduled flights - but has already alerted affected customers.
The company says those who have not gotten any notifications should travel as normal.
Ryanair and trade union reps couldn't come to an agreement when they met yesterday:
Bernard Harbour of Forsa says yesterday's talks were promising, but they just ran out of time saying "At this late stage in the game it was unlikely that we were going to crack this".