In general, when booking your flight to Hanoi, November is the cheapest month on average.
In general, most flyers find the cheapest time to book a flight to Hanoi is about 42 days prior.
From most locations, the cheapest flights to Hanoi are found on a Monday. Booking a Wednesday departure is usually the most expensive.
Our data shows that the cheapest Hanoi flights are usually those with morning departure times. afternoon flights are often costlier.