Facebook page offering free flights with Virgin Airlines was a scam. Thousands of Facebook users believed it was genuine. Facebook has now removed the page, but there are others tricking unsuspecting users. No-one is ever going to get a free flight for liking or sharing the page. The scammers plan is to trick as many people as possible into liking the page and then spamming your newsfeed with links that might be designed to make them money, or to trick you into visiting dangerous webpages.”]
Source: https://grahamcluley.com/500-free-virgin-airlines-flights-given-away-facebook-scam/