AirHint found the following cheapest return flights from Fort Lauderdale (FLL) to Madrid (MAD) in September 2025 (see full year).

Return flights

28 Sep - 08 Oct	Delta
23 Sep - 08 Oct	Delta
22 Sep - 08 Oct	Delta
29 Sep - 14 Oct	Delta
28 Sep - 15 Oct	Delta
28 Sep - 14 Oct	Delta
30 Sep - 16 Oct	Delta
29 Sep - 06 Oct	American Airlines
15 Sep - 24 Sep	Delta
16 Sep - 23 Sep	Delta
16 Sep - 24 Sep	Delta
30 Sep - 03 Oct	Delta
25 Sep - 07 Oct	Air Canada
18 Sep - 22 Sep	Delta
10 Sep - 17 Sep	Air Canada
20 Sep - 27 Sep	United
10 Sep - 13 Sep	Delta
08 Sep - 18 Sep	American Airlines
08 Sep - 10 Sep	American Airlines
10 Sep - 15 Sep	American Airlines

Also check the deals for one-way flights from Fort Lauderdale to Madrid in September.

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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Cheapest return flights from Fort Lauderdale to Madrid in September from $437

Return flights