AirHint found the following cheapest return flights from Miami (MIA) to Barcelona (BCN) in September 2025 (see full year).

Return flights

21 Sep - 27 Sep	LEVEL	direct
20 Sep - 08 Oct	LEVEL	direct
21 Sep - 03 Oct	LEVEL	direct
28 Sep - 03 Oct	LEVEL	direct
20 Sep - 24 Oct	LEVEL	direct
28 Sep - 08 Oct	Iberia	direct
08 Sep - 18 Sep	TAP
08 Sep - 16 Sep	TAP
22 Sep - 30 Sep	TAP
22 Sep - 02 Oct	TAP
08 Sep - 22 Sep	TAP
15 Sep - 23 Sep	TAP
15 Sep - 25 Sep	TAP
15 Sep - 22 Sep	TAP
27 Sep - 02 Oct	TAP
24 Sep - 08 Oct	LEVEL	direct
21 Sep - 30 Sep	TAP
28 Sep - 12 Oct	LEVEL	direct
27 Sep - 05 Oct	LEVEL	direct
10 Sep - 18 Sep	Iberia

Also check the deals for one-way flights from Miami to Barcelona 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 Miami to Barcelona in September from $344

Return flights