If the price of fuel increases, the salaries of pilots increase ( worldwide shortage imminent ), the unit price of the machines increase ( Airbus and Boeing happy to be out of a buyers market ), Airport charges increase ( or subsidies decrease ) etc, etc, then airfares increase. The price sensitive market may be tested, and inturn the loco's may have to evolve. I'd like to see Ryanair rebrand soon and get ahead of the possy for the next stage in aviation. Hub and spoke, central airports, mixed class travel and modern yield management, customer service, alliances, group purchasing, a mixed fleet.... Ancillary revenue will stay. Interesting times. Great viewing!