Cheap flights from Madrid to San Juan from £248

The cheapest month to fly to San Juan from Madrid is in February. Flight prices, which tend to average around £478, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of February, then book flights to San Juan from Madrid during September instead. Flights to San Juan in September, while not as cheap as those in February, still average around £511.

The cheapest day to depart on your flight to San Juan is on a Friday when prices can be found for as low as £496. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to San Juan is Sunday, with ticket prices averaging around £799.

In the morning is the cheapest time of day to fly from Madrid to San Juan when you can find flight prices for as low as £525. Flying to San Juan in the morning is an ideal time because this is during off-peak travel hours. Flights in the afternoon are often more expensive, with an average ticket price of £546.

Fly from Madrid Barajas to San Juan Luis Munoz Marin Intl for the best Madrid Barajas - San Juan flight prices

You are more likely to see cheaper flights to San Juan from Madrid when booking weeks ahead of your departure date. In general, you can expect to find flights to San Juan for around £578 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Juan from Madrid for as low as £515 on momondo.

There is only 1 cabin class available to choose from on Madrid Barajas to San Juan 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 27% of flights between Madrid and San Juan have experienced a delay on any given week. The average delay length over the past 12 months has been 148 minutes.

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

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

According to our data, Iberia have had the fewest delays on this route over the last 12 months, with about 26% of their flights experiencing any sort of delay.

5 flights are operational daily from Madrid to San Juan as of March 2026. The most popular departure time for this route is 12:00, with 100% of flights per day taking off in the afternoon.

As of March 2026, there are 38 flights per week flying from Madrid to San Juan. The most common day of the week flights depart is Tue, with 16% of flights taking off on this day.