Cheapest one-way flights from San Juan to Madrid in September from 221€

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

One-Way flights

26 Sep Frontier Airlines
27 Sep Frontier Airlines
20 Sep Frontier Airlines
28 Sep Frontier Airlines
30 Sep Frontier Airlines
12 Sep Frontier Airlines
21 Sep Frontier Airlines
11 Sep Frontier Airlines
14 Sep Frontier Airlines
09 Sep Frontier Airlines

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.

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