The best day to arrive at Hanoi is Saturday and it would be best to avoid Tuesday, as prices are on average 309.09% higher than on Saturday. (Average prices, based on 606301 datapoints.)
Mon
MondayTHB 5.275
Tue
TuesdayTHB 13.701
Wed
WednesdayTHB 4.147
Thu
ThursdayTHB 3.513
Fri
FridayTHB 3.448
Sat
SaturdayTHB 3.349
Sun
SundayTHB 3.633
Analyse direct flights between Hanoi and Hong Kong.
