Ryanair will cancel thousands of bookings that are made on third party websites. The airline's boss is taking the hard line stance against websites that compare prices between different airlines but which he says charge more for flights than if they were purchased directly from Ryanair. Any passengers that book through these websites will now see their bookings cancelled. The company also believes that the so called screen scraper website are illegal and that causing disruption by cancelling booking made through them will be easier than taking them to court. Screen scraping sites currently account for 0.5% of Ryanair's bookings but this amounts to 1,000 flights a day. Ryanair has no means of contacting affected customers, this is down to the website that has taken the booking. So if you have made a booking through an external website you might want to check it is still valid before flying.