The Swans are unbeaten in three meetings against the reigning European champions this season.
The league meeting at the Liberty Stadium ended in a 1-1 draw, while two clean sheets in the last-four of the League Cup were enough to secure a 2-0 aggregate victory.
The outstanding performances of Flores and centre-half partner Ashley Williams were hallmarks of the cup contests, particularly during the first leg in London where the Swans had to survive wave after wave of Chelsea pressure.
Flores modestly deflects the praise for his individual performances, but acknowledges a similar standard will be required as they return to Stamford Bridge.
"I don't know if they were our best performances of the season but obviously to keep Chelsea to zero in two games is an achievement," he said. "But it is not just about me and Ashley - our whole defence was good over those two games and has been throughout the season.
"Ben Davies is young and new to the Premier League but he has done well and is improving all the time, and Angel Rangel has been here for many years and is very good.
"We have two good goalkeepers in Michel Vorm and Gerhard Tremmel and as a team we work hard in defence, including the strikers and midfielders.
"We've done well in the big games this season, keeping a clean sheet against Chelsea and Arsenal, only conceding one goal against Manchester United and Manchester City. We need to keep that going."
- Sports & Recreation
- The Swans