There were at least four "go-arounds" due to poor visibility, an airport spokesperson said.
The delays were the longest in the morning, when the city experienced a very heavy rainfall. The delays came down to up to 20 minutes by the end of the day.
Private carrier Jet Airways' Raipur-Mumbai flight had to be diverted to Vadodara because of the downpour and it arrived at CSIA later in the day.
A "go-around" is a procedure that is performed if a pilot is not completely satisfied that requirements are in place for a safe landing.
