To save up to 5% on this flight, we recommend booking at least 52 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Portsmouth to Hanoi from £518 1-2 weeks out and tickets from £543 for flights departing within the next 72 hours.
Flights from Portsmouth to Hanoi lean towards being more expensive in December. Prices are generally better when you fly from Portsmouth to Hanoi in May, with the cheapest ticket starting at £354.
At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Southampton and Hanoi for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.
The rainfall in Southampton is generally more than the rainfall in Hanoi. This will continue over the next 10 days.
You can imagine temperatures to be in the 34 °C range in June. The weather in Hanoi is generally hotter than Southampton's. As flight availability is subject to become more limited as peak season approaches it is ideal to book in a timely manner.