Cheap flights from Madrid to San Sebastian from $44

The month of February is, on average, the cheapest month to fly to San Sebastian from Madrid, with most prices found around $89. If you are unable to visit San Sebastian during the month of February, then departing from Madrid during the month January is also very affordable. Most momondo users find prices during this month for around $93.

On average, the least expensive day to fly to San Sebastian from Madrid is on a Sunday. momondo users have found tickets for Sunday departures for as low as $106. 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 Madrid to San Sebastian for around $198.

Flying to San Sebastian from Madrid in the morning is the least expensive time of day to depart. momondo users have found prices as low as $129 when looking at flights departing in the morning. Flights to San Sebastian are more costly in the evening, with an average ticket price of $168. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from Madrid Barajas to San Sebastián for the best Madrid Barajas - San Sebastián flight prices

You are more likely to see cheaper flights to San Sebastian from Madrid when booking weeks ahead of your departure date. In general, you can expect to find flights to San Sebastian for around $148 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Sebastian from Madrid for as low as $79 on momondo.

There are 3 cabin classes available to choose from on Madrid Barajas 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 3% of flights between Madrid and San Sebastian have experienced a delay on any given week. The average delay length over the past 12 months has been 95 minutes.

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

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

According to our data, Iberia have had the least number of delays on this route over the last 12 months; with about 3% of their flights experiencing any sort of delay.

18 flights are operational daily from Madrid to San Sebastian as of March 2026. The most popular departure time for this route is 7:00PM, with 56% of flights per day taking off at noon.

The number of flights available between Madrid and San Sebastian is 128 per week as of March 2026. The most frequent departure day is Mon, with 16% of weekly flights leaving on this day.