Just ran a quick search for October dates and got this
Flight 1 Thursday, October 15, 2009
Departure: 11:15 Dublin, Ireland (Republic of) - Dublin
Arrival: 13:55 Philadelphia, USA - Philadelphia International, terminal A
Airline: US Airways US723
Aircraft: Boeing 757-200
Change of plane required. Time between flights = 4:20.
Flight 2 Thursday, October 15, 2009
Departure: 18:15 Philadelphia, USA - Philadelphia International, terminal B
Arrival: 20:55 Orlando, USA - Orlando International
Airline: US Airways US759
Aircraft: Airbus Industrie A321
Flight 1 Thursday, October 22, 2009
Departure: 12:10 Orlando, USA - Orlando International
Arrival: 14:37 Philadelphia, USA - Philadelphia International, terminal B
Airline: US Airways US758
Aircraft: Airbus Industrie A321
Change of plane required. Time between flights = 6:08.
Flight 2 Thursday, October 22, 2009
Departure: 20:45 Philadelphia, USA - Philadelphia International, terminal A
Arrival: 08:40 +1 day(s) Dublin, Ireland (Republic of) - Dublin
Airline: US Airways US722
Aircraft: Boeing 757-200
So the long haul is on a Boeing 757
Seat Guru has
this config version 2 which is a possibility for your flight
If you look at the
movie listings it appears Economy has overhead screens and the Envoy class has seat back on demand personal screens
Hope this answers things for you