Most travellers find the cheapest return flights to San Sebastian when choosing a flight departing in January.
From most locations, to find the best deals on airfare, our data shows that users booking 56 days before flying found the cheapest flight to San Sebastian.
Most of our users find that booking their departure to San Sebastian on a Tuesday is the cheapest. Conversely, departing on a Sunday seems to be the most expensive.
Typically, cheap prices to San Sebastian are most often found for midday flights. Cheap prices are less likely for afternoon flights.