By Train/Metrolink
I Quote
"Probably the best way to get to the stadium is by Metrolink or train from Manchester Piccadilly mainline station, as Old Trafford has both its own railway station next to the ground and a Metrolink station which is located next to Lancashire County Cricket Club on Warwick Road, which leads up to Sir Matt Busby Way.
The Metrolink also has another branch line going to Eccles from Manchester
Centre. There are two stops to leave the tram - Pomona and Exchange Quay. These are on the opposite (Salford) side of the ground - probably a quieter line on Matchdays. Pomona is the closest to the ground, only a short walk away and closer than Lancashire CC. Exchange Quay is the one to use for return journeys as the trams get full and may not stop at Pomona going back'.
If using the Metrolink, away fans are better off taking the Altrincham - Bury route and getting off at Old Trafford station, by the cricket ground - just follow the crowds for the football. While the nearest stations to the ground are probably Pomona or Exchange Quays on the Eccles line, they not particularly convenient for getting to or from the away end. However, when leaving, if you have a train to catch after the game, avoid Old Trafford Metrolink at all costs! The best bet is get the train from Old Trafford station to Piccadilly - the entrance to the station is immediately outside the away end."