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

Return flights

21 Sep - 01 Oct	Delta
21 Sep - 03 Oct	Delta
29 Sep - 14 Oct	Delta
21 Sep - 08 Oct	Delta
16 Sep - 23 Sep	Delta
16 Sep - 25 Sep	Delta
15 Sep - 24 Sep	Delta
15 Sep - 03 Oct	Delta
10 Sep - 16 Sep	Air Canada
26 Sep - 03 Oct	Delta
10 Sep - 18 Sep	Air Canada
10 Sep - 23 Sep	Delta
07 Sep - 09 Sep	United
10 Sep - 20 Sep	Air France
08 Sep - 18 Sep	Delta
08 Sep - 22 Sep	Delta
29 Sep - 10 Oct	Delta
22 Sep - 09 Oct	Delta
17 Sep - 04 Oct	Delta
27 Sep - 09 Oct	Delta

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 373€

Return flights