Several experiences from NCL:
Dan-air to Amsterdam, via Teesside - a great sightseeing trip along the durham coastline!
Air Uk from Amsterdam dropping into EDI on the way, then pretty much following the A68 at what seemed to be 1000 feet over Carter Bar.
BA Cityflyer to/from LGW
British European to Southampton
Also BE early December ski charter from LGW to Verona - the roar was particularly noticeable with a step down approach from above the alps to the Italian plain.
Worst experience was sat in the very back row of a Swiss "Jumbolino" from LCY to ZRH - noisy, uncomfortable and no view outside at all.