Guys, check the wiki article I provided a link to. The LOT fleet is not that old. The oldest plane they operate is a Boeing 737-400 from 1993 and the Embraer models are dated 2004, 2006 and 2011. There's something really fishy about this. Without knowing the specifics of the flights, I really find it hard to believe.
The London-Warsaw flight uses their oldest (and noisiest) aircraft, the Boeing 737-400.
Tuesday, November 12, 2013
Departure: 06:30 London, United Kingdom - Heathrow, terminal 1
Arrival: 10:00 Warsaw, Poland - Frederic Chopin
Airline: LOT Polish Airlines LO286 e
Duration: 2:30
Aircraft: Boeing 737-400
The 787 is certainly quieter but flies long haul to the USA.