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

Return flights

13 Aug - 20 Aug	Virgin Atlantic
19 Aug - 03 Sep	Delta
18 Aug - 24 Aug	Air Europa
20 Aug - 29 Aug	Air Europa
18 Aug - 26 Aug	Air Europa
11 Aug - 18 Aug	Air Canada
26 Aug - 02 Sep	Virgin Atlantic
22 Aug - 08 Sep	Air Canada
12 Aug - 02 Sep	Air Europa
03 Aug - 12 Aug	Delta
04 Aug - 12 Aug	Delta
11 Aug - 22 Aug	United
21 Aug - 24 Aug	Air Europa
14 Aug - 15 Sep	Air Europa
17 Aug - 27 Aug	Air Europa
23 Aug - 06 Sep	Air France
31 Aug - 07 Sep	KLM
22 Aug - 07 Sep	Air Canada
31 Aug - 10 Sep	Frontier Airlines
25 Aug - 01 Sep	Air Canada

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 348€

Return flights