To save on the cost of your flight from Southampton to Hanoi, book at least 44 days before your planned departure. Booking around this time can save you about 28% on the cost of this flight compared to booking a flight leaving this week. We have found prices from £942 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as £1,099.
September can be a great time to fly to Hanoi from Southampton with a flight ticket averaging about £745. Cheapflights users have found deals in the month of September for as cheap as £522. The most expensive prices can be found in the month of July.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Southampton to Hanoi as you normally would.