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

Return flights

20 Aug - 29 Aug	Iberia
20 Aug - 18 Sep	Finnair
06 Aug - 03 Sep	KLM
18 Aug - 27 Aug	TAP	direct
18 Aug - 26 Aug	Virgin Atlantic
18 Aug - 26 Aug	TAP	direct
13 Aug - 22 Aug	Air France
13 Aug - 20 Aug	Air France
03 Aug - 24 Aug	TAP	direct
21 Aug - 02 Sep	TAP	direct
16 Aug - 24 Aug	TAP	direct
06 Aug - 03 Sep	TAP	direct
06 Aug - 20 Aug	TAP	direct
02 Aug - 16 Sep	TAP	direct
04 Aug - 13 Aug	British Airways
26 Aug - 15 Sep	Delta
27 Aug - 03 Sep	United
18 Aug - 01 Sep	Delta
18 Aug - 01 Sep	TAP	direct
30 Aug - 07 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 390€

Return flights