At least once a year I am in transit at Riga airport to Middle East countries, so I didn’t notice they have some departure fees to pay at airport. This departure tax applies only to Ryanair passengers who has direct flights from Riga airport (RIX).
Up to 1st of January, 2012 the security function at Riga airport was financed from the state government, but as of 1st of January 2012 this fee was included into ticket price, but Ryanair didn’t agree to do that so passengers must to pay this security charge at airport.
A fee of 7€ must be paid before departure while checking at Riga airport or in the Ryanair ticket office at Riga Airport, or at “Welcome to Riga!” office located in arrivals sector E, or it can be paid on internet by credit card. Check RIX airport website for the latest information regarding this fee.