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

Return flights

01 Dec - 10 Dec	British Airways	direct
02 Dec - 16 Dec	British Airways
08 Dec - 15 Dec	British Airways	direct
05 Dec - 19 Dec	British Airways
16 Dec - 30 Dec	Virgin Atlantic
25 Dec - 08 Jan	Delta
05 Dec - 19 Dec	United	direct
23 Dec - 30 Dec	United
16 Dec - 21 Dec	United
02 Dec - 16 Dec	Lufthansa	direct
13 Dec - 20 Dec	United
12 Dec - 04 Jan	Lufthansa
28 Dec - 04 Jan	KLM
22 Dec - 06 Jan	Delta
25 Dec - 08 Jan	Finnair	direct
16 Dec - 03 Jan	Delta
14 Dec - 04 Jan	United
22 Dec - 06 Jan	United	direct
22 Dec - 05 Jan	Delta
22 Dec - 05 Jan	United	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 447€

Return flights