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

Return flights

18 Aug - 27 Aug	KLM
11 Aug - 05 Sep	TAP	direct
18 Aug - 04 Sep	TAP	direct
18 Aug - 03 Sep	TAP	direct
12 Aug - 01 Sep	Iberia
13 Aug - 01 Sep	Iberia
21 Aug - 31 Aug	TAP	direct
14 Aug - 24 Aug	TAP	direct
21 Aug - 28 Aug	TAP	direct
14 Aug - 26 Aug	TAP	direct
14 Aug - 01 Sep	TAP	direct
18 Aug - 24 Aug	TAP	direct
11 Aug - 15 Sep	British Airways
02 Aug - 16 Sep	Air Europa
13 Aug - 20 Aug	Air Canada
17 Aug - 26 Aug	Air Canada
06 Aug - 13 Aug	Iberia
13 Aug - 22 Aug	Air Canada
23 Aug - 09 Sep	KLM
12 Aug - 01 Sep	TAP	direct

Also check the deals for one-way flights from Miami to Lisbon 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 Lisbon in August from $435

Return flights