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 647648 datapoints.)
MondayTHB 3.280
Mon
TuesdayTHB 3.439
Tue
WednesdayTHB 2.546
Wed
ThursdayTHB 3.192
Thu
FridayTHB 2.870
Fri
SaturdayTHB 2.919
Sat
SundayTHB 5.124
Sun
Analyse direct flights between Surabaya and Penang.
THB
