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

Return flights

15 Sep - 01 Oct	TAP	direct
22 Sep - 03 Oct	TAP	direct
16 Sep - 23 Sep	TAP	direct
25 Sep - 08 Oct	TAP	direct
27 Sep - 08 Oct	TAP	direct
24 Sep - 01 Oct	TAP	direct
30 Sep - 07 Oct	Air France
24 Sep - 08 Oct	Iberia
24 Sep - 08 Oct	TAP	direct
23 Sep - 30 Sep	KLM
29 Sep - 06 Oct	British Airways
08 Sep - 15 Sep	TAP	direct
17 Sep - 24 Sep	Delta
26 Sep - 06 Oct	Air Europa
21 Sep - 24 Sep	Norse Atlantic Airways (UK)
19 Sep - 26 Sep	Finnair
01 Sep - 08 Sep	KLM
09 Sep - 19 Sep	Norse Atlantic Airways (UK)
19 Sep - 30 Sep	Finnair
14 Sep - 22 Sep	KLM

Also check the deals for one-way flights from Miami to Lisbon 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 Lisbon in September from $419

Return flights