However, he added that the unions many Ryanair pilots are members of, were working against the budget airline.
Chief executive Michael O'Leary will tell pilots who plan to take four weeks of consecutive holiday in the coming months will be told to reduce it to three weeks, with the lost leave to be taken in January.
Former Ryanair pilot James Atkinson, writing in the Guardian, said the airline uses divide and control tactics to keep pilots on different kinds of contracts and to prevent them from organizing.
Ryanair is facing an estimated bill of £17 million in compensation payouts to customers as a result of mass cancellations over the next six weeks.
Pilots at London Stansted, Dublin, Frankfurt and Berlin have now been offered an additional 10,000 euros per year, O'Leary told a news conference.
At the airline's annual general meeting or AGM on Thursday, Ryanair CEO Michael O'Leary apologized to the airline's shareholders and customers for the cancellation of 2,100 of its over 103,000 flights over a 6 week period in September and October, due to a failure within its pilot rostering function.
Some pilots have rejected Ryanair's offer, which means even more flights may need to be cancelled.
Ryanair's O'Leary has told shareholders that 75% of passengers with cancelled flights have been rebooked and refunded.
A group of Ryanair pilots has refused a cash offer to work on their days off. Some pilots were said to be hoping for a permanent pay increase, in addition to the bonus.
Such moves "should help stop the large number of colleagues who are leaving for "greener pastures" the letter said. More serious was a less-noticed European Court of Justice ruling on September 14th which decreed that low-priced airlines' employment disputes with crew must go to local labour courts in all the countries where airlines have bases (Irish labour law is broadly more flexible).
"There's an underlying problem at Ryanair, which is quite simply that the company can not replace pilots as fast as they quit", he wrote.
The airline expects to have refunded or processed alternative routes for 95% of affected customers by the end of this week.