I've flown with Ryanair from LBA-DUB (£5 each way + tax), STN to ORK (£40 each way + tax) and Stansted to Shannon (£7.50 each way + tax).
And what did I get for such massive sums? There and back. Sure, Ryanair may be no frills but that's the whole point - it was cheap!You really do get what you pay for....