Flights from Swansea to Portsmouth lean towards being more expensive in March. Prices are generally better when you fly from Swansea to Portsmouth in August, with the cheapest ticket starting at £42.
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 Swansea and Southampton 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.
We forecast the temperature to be around the 22 °Cs in July, on average. The temperature in Southampton is generally hotter than in Swansea. Book flights in a timely manner in correlation to your departure date.