Cheapest return flights from Houston to Lisbon in December from $519

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

Return flights

10 Dec - 15 Dec Spirit Airlines
08 Dec - 17 Dec British Airways
04 Dec - 14 Dec Spirit Airlines
31 Dec - 09 Jan Air France
15 Dec - 15 Jan American Airlines
31 Dec - 10 Jan American Airlines
25 Dec - 30 Dec Lufthansa
18 Dec - 28 Dec Air Canada

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

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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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