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

Return flights

21 Aug - 18 Sep	TAP
21 Aug - 25 Aug	TAP
21 Aug - 28 Aug	TAP
10 Aug - 20 Aug	Iberia
18 Aug - 01 Sep	Iberia
10 Aug - 26 Aug	Iberia
03 Aug - 22 Sep	Iberia
01 Aug - 18 Sep	Iberia
12 Aug - 20 Aug	Norse Atlantic Airways (UK)
10 Aug - 24 Aug	Iberia
06 Aug - 24 Aug	Iberia
11 Aug - 24 Aug	Iberia
01 Aug - 20 Aug	Norse Atlantic Airways (UK)
13 Aug - 27 Aug	Iberia
19 Aug - 02 Sep	Iberia
18 Aug - 29 Sep	TAP
25 Aug - 02 Sep	TAP
25 Aug - 03 Sep	TAP
25 Aug - 01 Sep	TAP
01 Aug - 18 Sep	Iberia	direct

Also check the deals for one-way flights from Miami to Barcelona in August.

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 August from 358€

Return flights