Find a great deal and save up to 47% by booking at least 54 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Belfast International to San Sebastian within the next two weeks, with the cheapest ticket starting at £214.
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 Belfast International and San Sebastian 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.
In Belfast International, there will be less rainfall in Belfast International compared to San Sebastian over the next 24 days.
Temperatures around the 26 °Cs can be experienced in August. The weather in San Sebastian is hotter than in Belfast International. Plan for potential changes in flight availability as peak weather approaches in this location.