The best day to arrive at Mumbai is Tuesday and it would be best to avoid Thursday, as prices are on average 224.42% higher than on Tuesday. (Average prices, based on 537390 datapoints.)
MondayAUD 65
Mon
TuesdayAUD 51
Tue
WednesdayAUD 136
Wed
ThursdayAUD 164
Thu
FridayAUD 139
Fri
SaturdayAUD 106
Sat
SundayAUD 104
Sun
Analyse direct flights between Mumbai and Chennai.