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

Return flights

05 Dec - 10 Dec	Delta
01 Dec - 10 Dec	KLM
02 Dec - 13 Dec	Delta
05 Dec - 14 Dec	Delta
25 Dec - 05 Jan	Delta
08 Dec - 14 Dec	KLM
01 Dec - 25 Jan	KLM
05 Dec - 21 Dec	KLM
03 Dec - 19 Dec	KLM
10 Dec - 21 Dec	KLM
24 Dec - 01 Jan	KLM
05 Dec - 10 Dec	TAP	direct
08 Dec - 14 Dec	TAP	direct
13 Dec - 03 Jan	Air Canada
26 Dec - 09 Jan	Air Canada
26 Dec - 08 Jan	Air Canada
19 Dec - 04 Jan	Air Canada
01 Dec - 25 Jan	TAP	direct
28 Dec - 07 Jan	Delta
26 Dec - 02 Jan	Air Canada

Also check the deals for one-way flights from Lisbon to Miami in December.

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 Lisbon to Miami in December from $497

Return flights