Chahat started her career struggle at the age of 16. Her first shoot was and advertisement of Cadburys, with Pradeep Sarkar in 2002. Her first TV show was also from 2002, called Sachi Baat Sabhi Jag Jane. Her first break in movies was with 7½ Phere. The same year she was seen as one of the cast of the thriller The Film (2005). The movie revolves around the lives of struggling film artists. Chahat also did a cameo in the show Hero Bhakti Hi Shakti Hai in 2005 for 8 episodes (4 Hours). She was playing the role of queen Mayra.

She was later seen in Sony's TV show Kajjal.

In 2009 she was seen in Ek Main Ek Tum and later in squad leader on MTV stuntmania.

From May 2011 to February 2013, she played the role of Ayesha Sharma/ Siddhant Kapoor in the serial Bade Achhe Lagte Hain. She quit the show on 10th Feb 2013 and has been replaced by Akanksha Juneja. Now she is working for Zee TV Khana Khazana in a series of small bytes where she make Mocktails

Chahat Khanna was first married to Bharat Narsinghani in December 2006,but she got divorced after few months due to physical abuse.^[2] Their courtship started in 2002 when she was 16. Her second husband is Farhan Mirza whom she married in February 2013.^[3]

Stuntmania as herself