If they’re not the cheapest option, try searching by month to compare costs throughout the week.
We scan thousands of airfares from hundreds of airlines across the globe. We've found that zero airlines operate the 6384 km flight from Madrid to San Juan Puerto Rico. Flights during peak season tend to be the most expensive – so if you want to go during that time, it's best to book early. Or you could try to get a last-minute flight deal.
To sort cheap flights to San Juan Puerto Rico, it's best to start searching for flights by month, as this will show you when prices are at their lowest.
Once you've selected your flight, you'll need to fill out your details to book. And don’t forget to look at Netflights’ hotels and car hire – you could save even more money on your trip when you book everything in one go.
