The best day to arrive at Surabaya is Wednesday and it would be best to avoid Sunday, as prices are on average 101.3% higher than on Wednesday. (Average prices, based on 658057 datapoints.)
MondayPHP 4.950
Mon
TuesdayPHP 5.394
Tue
WednesdayPHP 3.992
Wed
ThursdayPHP 5.006
Thu
FridayPHP 4.501
Fri
SaturdayPHP 4.577
Sat
SundayPHP 8.037
Sun
Analyse direct flights between Surabaya and Penang.