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

Return flights

29 Dec - 09 Jan	Lufthansa
29 Dec - 08 Jan	Lufthansa
30 Dec - 08 Jan	Brussels Airlines
29 Dec - 09 Jan	Austrian Airlines	direct
22 Dec - 08 Jan	jetBlue
23 Dec - 29 Dec	jetBlue
29 Dec - 06 Jan	Spirit Airlines
22 Dec - 25 Dec	jetBlue
30 Dec - 07 Jan	Lufthansa
30 Dec - 07 Jan	United	direct
27 Dec - 09 Jan	Brussels Airlines
27 Dec - 07 Jan	Spirit Airlines
22 Dec - 29 Dec	jetBlue
23 Dec - 27 Dec	jetBlue
22 Dec - 27 Dec	jetBlue
23 Dec - 31 Dec	Aeromexico
25 Dec - 28 Dec	Iberia
24 Dec - 27 Dec	Frontier Airlines
22 Dec - 31 Dec	Frontier Airlines
23 Dec - 31 Dec	Lufthansa	direct

Also check the deals for one-way flights from Houston to London 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 London in December from 565€

Return flights