But the airlines don't want planes filled with tourists who paid rock-bottom fares. They need some premium traffic aboard to make the flight pay, and not many premium ticket buyers care for STN.

Eos, MaxJet, etc. are challenging that theory with comparatively low prices for "business class style" service, but... the margins have got to be thin; the service apparently can be spotty (I read a completely scathing review of MaxJet in Business Traveller magazine); there's no connecting service or useful FF program, etc. I'm skeptical.

And even if STN is a draw for people connecting to LCC flights to the Continent, that doesn't do the American majors any good... nor BA or VS for that matter.