Chelsea have acted on ticket prices following the disappointing attendance in the Champions League game against Rosenborg.
Only 24,973 turned up at Stamford Bridge last week, despite the club slashing prices from £45 to £36.
Chelsea have now put tickets on sale for the group games against Schalke on 24 October and Valencia on 11 December at £25 for adults and £12 concessions.
A club statement said: "This is in line with this season's new policy of price reductions for Champions League games.
"These prices apply to all non-hospitality tickets and are the same as the prices for FA Cup matches at Stamford Bridge."