Cheap flights from Barcelona-El Prat Airport to San Sebastian from £52

The month of December is, on average, the cheapest month to fly to San Sebastian from Barcelona-El Prat Airport, with most prices found around £102. If you’re not able to fly to San Sebastian in December, then April is your next best option. Flight prices from Barcelona-El Prat Airport to San Sebastian during April average around £108.

Fly from Barcelona-El Prat to San Sebastián for the best Barcelona-El Prat - San Sebastián flight prices

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 £126 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 £85 on momondo.

There is only 1 cabin class available to choose from on Barcelona-El Prat Airport to San Sebastian flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

No. A direct flight is the cheapest option for a flight between Barcelona-El Prat Airport to San Sebastian.

As of October 2026, prices for Barcelona-El Prat Airport to San Sebastian flights are approximately 31% cheaper when compared to flights at the same time last year.

Historically, on average around 8% 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 88 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. Friday 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 8% of their flights experiencing any sort of delay.

As of October 2026, there are 3 flights per day flying from Barcelona-El Prat Airport to San Sebastian. The most common time of day flights depart is 16:00, with 53% of flights taking off in the afternoon.

As of October 2026, there are 24 flights per week flying from Barcelona-El Prat Airport to San Sebastian. The most common day of the week flights depart is Mon, with 17% of flights taking off on this day.