I'm guessing this is an attempt to compete with Norwegian on price/flexibility for the all important student holiday/gap year market.

I have to say I'm pretty impressed - I've been looking at dates in August and OSL-EWR comes out at around 3000 NOK/£360 for a flexible return.

The fares only seem to be available from OSL/CPH/ARN. The SK website won't let you search for journeys beginning in my normal starting points of LHR and HEL.