Just to try and dampen the w**k fantasy 777 story a little further with some hypothetical maths.........
To park a 777-200ER at Manchester for 24 hours over the winter would cost £357 (makes NCP look cheap doesn't it!)
So, lets be positive and assume you can actually find somewhere to operate it semi-profitably over the weekends. On Saturday morning, the plane owes you £1785 in weekday parking fees before the first passenger boards (or £6 per passenger in your suggested layout).
Operating at low yields over the winter period, that £6 could actually be the airlines net operating margin per ticket before tax................