Despite making 16 unforced errors, 14th seed Kvitova, who knocked out German world number one Angelique Kerber in the last 16, hit 34 winners to crush Romanian fourth seed Halep in just over an hour.
"It's amazing. I came to this tournament and really didn't expect this kind of performance," Kvitova told reporters.
"Physically I'm still so-so - I'm really happy that I'm not falling apart."
Cibulkova's path to the final has been far less straightforward as the 10th seed played two matches on Thursday.
"It feels great. I'm really tired right now, but the feeling to be in the final is unbelievable," Cibulkova said.
Cibulkova also boosted her hopes of reaching the season-ending WTA Finals in Singapore for the first time. Victory over Kvitova would lift her above Spain's Garbine Muguruza into sixth place in the rankings.
(Reporting by Shravanth Vijayakumar in Bengaluru, editing by Ed Osmond)
