airBaltic
From 'Routes Online':
Latvian airline airBaltic will launch a new route between Riga, Latvia, and Aberdeen, UK, on March 30, 2014.
Aberdeen Airport’s Carol Benzie said: “The energy industry will benefit from this route, and many of our business passengers will value this service into Riga as well as the onward connections that serving this hub will provide.
“On top of that, it will be welcomed by our leisure passengers who see Riga as a popular short break destination.”
The Boeing 737 service will operate on Mondays, Wednesdays, Thursdays and Sundays.
Seems ambitious both from freq & equipment, but we'll see -- 6mths to go!