To watch Albion.. Southampton x 4, Charlton x 3, Orient x 3, Brentford x 3, Bournemouth x 3 are my most frequented away grounds. Mostly obvious, local-ish ones, I suppose..
Orient (Brisbane Road) many times but have never kept count.
Swindon, just a ground I went to many times, at least 6 times.
Swansea, but in fairness I do live only about 15 miles or so away from there, and the same for Cardiff.
Portsmouth 4 / 5 times.
Bournemouth 3 times
Back in the early 70s we used to go to all the away games, but remembering where etc is just a blur!!