19 year old Lee McLaughlin from Gleneely went missing in Paris after attending the Sweden match at the Stade de France.
He was last seen leaving Ibis Paris Montmartre at 12pm on Tuesday.
he did not check in at the airport for his flight home, which has since departed.
Attempts to contact him by phone have proven unsuccessful and Mr McLaughlin's family have appealed for anyone with any information to contact them
Lee's family say this is very out of character for him and are appealing for anyone with information to get in touch..