Budget airlines are the great equalisers of sky travel: may they grow more plentiful and cheaper still. And when the number of “no-frills” carriers does increase significantly, they will surely begin to compete with one another in terms of how nicely they treat passengers as well as their affordability. Rather than stripping down services to the point where it costs US$1.50 to use the toilet during a flight (don’t do it, Ryan Air!) and inflating the price of snack food by almost 400 percent, the concept of the complimentary may come back in vogue, even if we are paying a bit less than the rest.