The best day to arrive at Mumbai is Friday and it would be best to avoid Thursday, as prices are on average 251.15% higher than on Friday. (Average prices, based on 534608 datapoints.)
MondayNZD 73
Mon
TuesdayNZD 77
Tue
WednesdayNZD 85
Wed
ThursdayNZD 234
Thu
FridayNZD 67
Fri
SaturdayNZD 88
Sat
SundayNZD 120
Sun
Analyse direct flights between Mumbai and Chennai.