Cheap flights from Barcelona-El Prat Airport to San Sebastian from $15

The month of February is, on average, the cheapest month to fly to San Sebastian from Barcelona-El Prat Airport, with most prices found around $151. If you are unable to visit San Sebastian during the month of February, then departing from Barcelona-El Prat Airport during the month April is also very affordable. Most momondo users find prices during this month for around $156.

On average, the least expensive day to fly to San Sebastian from Barcelona-El Prat Airport is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $167. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Barcelona-El Prat Airport to San Sebastian for around $302.

Flying to San Sebastian from Barcelona-El Prat Airport in the morning is the least expensive time of day to depart. momondo users have found prices as low as $207 when looking at flights departing in the morning. Flights to San Sebastian are more costly in the afternoon, with an average ticket price of $217. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

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 $176 when searching weeks out. 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 $98 on momondo.

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

Historically, on average around 7% 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 99 minutes.

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

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

According to our data, Vueling have had the least number of delays on this route over the last 12 months; with about 7% of their flights experiencing any sort of delay.

As of March 2026, 3 flights take off from Barcelona-El Prat Airport and land in San Sebastian each day. The most common flight departure time for this route is 12:00PM, with 100% of daily flights taking off in the afternoon.

As of March 2026, there are 26 flights per week flying from Barcelona-El Prat Airport to San Sebastian. The most common day of the week flights depart is Tue, with 15% of flights taking off on this day.