Ryanair is offering customers eight days of sales on its website and app as part of Cyber Week.
The airline said offers would start with a Summer Sale, with up to €30 off return flights across its European network, for travel between April and September, which must be booked by midnight on Monday.
Customers should keep an eye on Ryanair.com for the latest daily offers.
Ryanair also announced a bag sale with 10% off check-in bags on all bookings made this week.