It said in a statement that the action was "unjustified" and "regrettable", but said that 85 percent of its flights would still be operated, and said that it had done all that it could to prevent the dispute escalating into industrial action, adding that the "majority of customers affected have already been re-accommodated on another Ryanair flight".
"My only options were to get a refund or to go down the route - which I have done - to claim compensation".
Customers have been notified and a majority of those affected moved to another Ryanair flight, the company said.
Ryanair has refused to issue a list of the flights cancelled, but The Times understands that at least 50 departures from the United Kingdom have been called off, with more than 250 cancelled in Ireland.
It also called on the striking unions to return to negotiations rather than "calling any more unjustified strikes".
A Dutch court on Thursday evening rejected a case from Ryanair seeking to block pilots in the Netherlands from joining the strike, affecting about 22 flights.
Ryanair, which flies in 37 countries and carried 130 million passengers last year, averted widespread Christmas strikes last year by agreeing to recognise trade unions for the first time in its 33-year history.
DOOM ETERNAL Full *INSANE* Gameplay Footage | Quakecon 2018 The music seems to take the same heavy and metallic route of the last game, so we'll be looking forward to that soundtrack. Instead, you'll be able to travel to multiple worlds (including never-before-seen ones) on your demon-slaying adventure.
But Ryanair pilots say they earn less than counterparts at other airlines like Lufthansa.
But the "once in a lifetime experience" of being at her best friend Justine's wedding seems impossible now, after Ryanair cancelled her flight with two days' notice.
Irish-based Ryanair is Europe's largest low-priced airline.
Unions also want the airline to give contractors the same work conditions as staff employees.
"It's annoying that it's happening in the summer holidays, but it's the only means they have".
"Ryanair is the only multinational in Belgium that doesn't respect the Belgian law and that's not normal", said Didier Lebbe, a representative of union ACV-CSC, whose demands include securing its pilots pay when they are on stand-by.
But some people took to Twitter to complain at how Ryanair handled the debacle after their flights were canceled.
Royal King told The Seattle Times he was photographing a wedding when he saw the low-flying turboprop being chased by two F-15s. Ms Morse said her mother, who lives near the crash site, had said eight minutes later that her whole house shook.
The president received the famous accolade in 2007 for his work on the U.S. version of reality show The Apprentice . Trump's star was also vandalized in October 2016 while he was the Republican candidate for president.
She writes that over time, she came to the realization that Trump was a racist, something the rest of us already knew . In her tell-all, Omarosa claims that she has recordings of Donald Trump "frequently" using racially offensive words.
Mourinho warned last weekend that a "difficult season" could lie ahead if they failed to strengthen the squad before the deadline. With so much business being done since the end of last season, it has been tough to keep track of who has gone where.
It's only the first preseason game, but the Baker Mayfield hype train is running like a well-oiled machine. Taylor is looking great as the starter for now and Mayfield is looking fine as the starter for later.
He had been hoping to make more of an impression on the former Napoli coach Sarri but it now seems that he won't get the chance. AC Milan are expected to complete the loan deal for the Frenchman, in a bid to further bolster their squad options.
The death toll from the Lombok quake has risen dramatically to 347, the government-run news agency Antara has said. Motorcycles parked on the street were seen toppled over, while the walls of other nearby buildings collapsed.
It has also been reported that the intensity of the flow of water into the dam has also reduced on Saturday morning. As many as 24 reservoirs across the state have been opened because of the heavy downpours and rising water levels.
Another police tweet said one person was taken into custody but gave no immediate details on where the incident occurred. Fredericton is the capital of New Brunswick, a province on the eastern side of the country and above ME in the USA.
Let’s double down on Turkey sanctions
The drop in the lira has put increasing pressure on Turkish banks, given many companies have borrowed heavily in foreign currency. The White House said he had authorized them under asection of US trade law that allows for tariffs on nationalsecurity grounds.
Perseid meteor shower pictures
You won't have to worry about one bonking you on the head - most of the meteors in the Perseid shower are far too small for that. Our advice? Bring a rug, a flask of tea (or, you know, whiskey - pick your poison) and some insect repellent, and get gazing.
Trump vows to double steel and aluminum tariffs on Turkey
High-level meetings in Washington between US and Turkish officials over Brunson ended this week , apparently without a resolution. But Mr Erdogan is famously averse to interest rate rises, and there are fears he may be pressuring the central bank not to act.
Argentina: Senators reject bill to legalise abortion
Amnesty International proceeded to publish an ad in the New York Times using the misinformation touted by Rubinstein. His sentiments were shared by 21-year-old Camila Sforza, who said she remained hopeful despite the setback.
Paul Merson predicts Liverpool FC v West Ham
At the end, I'm pretty sure we have a fantastic football team on the pitch and hopefully I have to make a few decisions. And while Klopp would like that fortune to change he knows there are other factors which are more important.
James Bond producer says 'it is time' for a black 007
He claims that she believes "it is time" for a Black Bond , and he also added, "Idris could do it if he was in shape". You need a guy with a physically strong presence. " Idris Elba is one of the finest men on the planet".
Imran Khan to appear before Pakistan's anti-graft body
After taking oath in the National Assembly, candidates will elect the speaker of the House along with the prime minister . A meeting of the Pakistan Tehreek-e-Insaf's ( PTI ) Punjab parliamentary party will be held in the federal capital today.
Kelvin Benjamin dominates Panthers on 28-yard TD
Benjamin had been pretty critical of the Panthers star in a recent interview. "I should've never went to Carolina". It's not clear what they said to each other, but the interaction did not end in the friendliest of ways.