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

Return flights

29 Dec - 07 Jan	Spirit Airlines
23 Dec - 06 Jan	Frontier Airlines
27 Dec - 08 Jan	Frontier Airlines
28 Dec - 06 Jan	Frontier Airlines
23 Dec - 08 Jan	Frontier Airlines
25 Dec - 30 Dec	Spirit Airlines
24 Dec - 31 Dec	KLM
22 Dec - 07 Jan	Spirit Airlines
23 Dec - 07 Jan	Frontier Airlines
26 Dec - 01 Jan	Frontier Airlines
26 Dec - 29 Dec	Frontier Airlines
25 Dec - 31 Dec	Spirit Airlines
22 Dec - 26 Dec	Aer Lingus
24 Dec - 05 Jan	Frontier Airlines
28 Dec - 04 Jan	Frontier Airlines
22 Dec - 27 Dec	KLM
23 Dec - 28 Dec	Viva
21 Dec - 29 Dec	Spirit Airlines
21 Dec - 27 Dec	Frontier Airlines
22 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.

Book a cheap hotel in London

Cheap car rent in London

Cheapest return flights from Houston to London in December from 1007€

Return flights