That journey goes through zone 3+2 ,so an off peak (ie after 9.30am weekdays and all day weekends and bank holidays) is currently £3.10 return. Best paid by tapping in and out with a contactless card or smart phone.
Doubt the Ashton park and ride will be an option mate, looks like the route to and from Ashton will be out of action for at least a couple of years from 2024.
HS2: Council calls for rethink over Metrolink suspension - BBC News
Councillors are urging a rethink over plans to cut off some tram services due to building work.
www.bbc.co.uk