Cheapest return flights from Houston to Lisbon in December from $554

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

Return flights

02 Dec - 09 Dec Air Canada
01 Dec - 09 Dec Air France
08 Dec - 23 Dec Air France
28 Dec - 17 Jan Air Canada
23 Dec - 17 Jan United
24 Dec - 29 Dec Spirit Airlines
08 Dec - 03 Jan Frontier Airlines
09 Dec - 03 Jan Frontier Airlines
11 Dec - 03 Jan Frontier Airlines
23 Dec - 04 Jan Frontier Airlines
28 Dec - 03 Jan Spirit Airlines
21 Dec - 03 Jan Frontier Airlines
23 Dec - 02 Jan Spirit Airlines
22 Dec - 02 Jan Frontier Airlines

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

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