Cheap flights from Barcelona-El Prat Airport to San Sebastian from €83

The month of April is, on average, the cheapest month to fly to San Sebastian from Barcelona-El Prat Airport, with most prices found around €123. If you’re not able to fly to San Sebastian in April, then February is your next best option. Flight prices from Barcelona-El Prat Airport to San Sebastian during February average around €130.

You are more likely to see cheaper flights to San Sebastian from Barcelona-El Prat Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to San Sebastian for around €144 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Sebastian from Barcelona-El Prat Airport for as low as €93 on momondo.

Historically, on average around 9% of flights between Barcelona and San Sebastian have experienced a delay on any given week. The average delay length over the past 12 months has been 89 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights departing in the early afternoon have, in the past, seen delays more frequently in comparison.

Saturday is statistically the day of the week that experiences the fewest delays on this flight route. Tuesday has historically seen more delays on average compared to the rest of the week.

According to our data, Vueling have had the fewest delays on this route over the last 12 months, with about 9% of their flights experiencing any sort of delay.

4 flights are operational daily from Barcelona-El Prat Airport to San Sebastian as of September 2026. The most popular departure time for this route is 07:00, with 53% of flights per day taking off at midday.

31 flights are operational weekly from Barcelona-El Prat Airport to San Sebastian as of September 2026. The most popular departure day for this route is Wed, with 23% of flights per week taking off on this day.