Travellers have found it’s best to book a flight 54 days in advance to save up to 47% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 54 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Southend to San Sebastian 1-2 weeks in advance for as low as £215, or £280 for flights within the next 24 hours.
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 Southend 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.
You can imagine temperatures to be in the 26 °C range in August. The weather in San Sebastian is generally hotter than Southend's. As flight availability is subject to become more limited as peak season approaches it is ideal to book in a timely manner.