Looks like SAS starts up the flights again on 26 October. To me it seems like charter flights (for Danish windmill specialists for the Humber Gateway Wind Farm) where they sell off free seats. One has to be bonkers to buy tickets on these flights with a return ticket prices of around £500. If you drive the two hours across the Pennines to MAN you can get the same return flight to CPH for £90 with SAS.