Cheapest one-way flights from San Juan to Madrid in September from $321

AirHint found the following cheapest one-way flights from San Juan (SJU) to Madrid (MAD) in September 2025 (see full year).

One-Way flights

22 Sep Frontier Airlines
30 Sep Frontier Airlines
20 Sep Frontier Airlines
24 Sep Frontier Airlines
21 Sep Frontier Airlines
24 Sep Iberia direct
22 Sep American Airlines direct
21 Sep American Airlines direct
25 Sep British Airways direct

Also check the deals for return flights from San Juan to Madrid in September.

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

Book a cheap hotel in Madrid

Cheap car rent in Madrid

Feel free to contact us with any feedback or request another flight research.