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

Return flights

08 Dec - 14 Dec	Lufthansa
09 Dec - 14 Dec	United
15 Dec - 12 Jan	Air France
03 Dec - 10 Dec	Spirit Airlines
12 Dec - 14 Dec	United
05 Dec - 12 Dec	Lufthansa
05 Dec - 11 Dec	Lufthansa
30 Dec - 08 Jan	Frontier Airlines
16 Dec - 23 Dec	Air France
14 Dec - 18 Dec	Frontier Airlines
23 Dec - 10 Jan	Spirit Airlines
22 Dec - 10 Jan	Spirit Airlines
21 Dec - 10 Jan	Frontier Airlines
20 Dec - 10 Jan	Frontier Airlines
31 Dec - 05 Jan	Frontier Airlines
15 Dec - 28 Dec	KLM
22 Dec - 30 Dec	Spirit Airlines
28 Dec - 04 Jan	Lufthansa
29 Dec - 04 Jan	Spirit Airlines
24 Dec - 01 Jan	Spirit Airlines

Also check the deals for one-way flights from Houston to Barcelona 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 Houston to Barcelona in December from 469€

Return flights