Sun-Air are holding slots at Manchester from 22 August for a 2 x daily Do328Jet service to Groningen. For more information if you don't understand Dutch, please use the Google Translate function. http://airportnieuws.blogspot.nl/2016/03/manchester-mogelijk-nieuwe-bestemming.html
DAT åpner mulig København - Groningen
Totally different item: DAT is in advanced negotiations with Groningen Airport (GRQ/EHGG, Netherlands) to start a (feeder) line Groningen - Copenhagen. So say the local media in Groningen. They need money from companies and local government, wich does not...