The best day to arrive at Hanoi is Sunday and it would be best to avoid Monday, as prices are on average 1155.29% higher than on Sunday. (Average prices, based on 313602 datapoints.)
Mon
MondayUS $ 449
Tue
TuesdayUS $ 336
Wed
WednesdayUS $ 137
Thu
ThursdayUS $ 98
Fri
FridayUS $ 63
Sat
SaturdayUS $ 94
Sun
SundayUS $ 36
Analyse direct flights between Hanoi and Singapore.
