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

Return flights

03 Dec - 09 Dec	Turkish Airlines
19 Dec - 11 Jan	Frontier Airlines
17 Dec - 06 Jan	Air Canada
15 Dec - 10 Jan	Air Canada
27 Dec - 14 Jan	Turkish Airlines
10 Dec - 19 Dec	Turkish Airlines
16 Dec - 23 Dec	TAP
20 Dec - 29 Dec	Air Canada
27 Dec - 10 Jan	Turkish Airlines
27 Dec - 13 Jan	Turkish Airlines
22 Dec - 06 Jan	TAP
15 Dec - 20 Dec	TAP
29 Dec - 03 Jan	Turkish Airlines
27 Dec - 04 Jan	Turkish Airlines
22 Dec - 05 Jan	TAP
26 Dec - 30 Dec	TAP
21 Dec - 31 Dec	Turkish Airlines

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 $770

Return flights