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

Return flights

10 Dec - 16 Dec	Lufthansa
08 Dec - 23 Dec	Lufthansa
08 Dec - 24 Dec	Austrian Airlines
07 Dec - 23 Dec	Lufthansa
08 Dec - 16 Dec	Lufthansa
30 Dec - 20 Jan	Air France
08 Dec - 15 Dec	Lufthansa
09 Dec - 14 Dec	Lufthansa
11 Dec - 16 Dec	Lufthansa
30 Dec - 20 Jan	Lufthansa	direct
04 Dec - 29 Jan	WestJet
15 Dec - 23 Dec	Austrian Airlines
08 Dec - 26 Dec	Lufthansa
30 Dec - 08 Jan	Air France
31 Dec - 08 Jan	Air France
10 Dec - 07 Jan	Virgin Atlantic
31 Dec - 07 Jan	Virgin Atlantic
12 Dec - 09 Jan	Air Canada
14 Dec - 08 Jan	Virgin Atlantic
13 Dec - 08 Jan	Virgin Atlantic

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 470€

Return flights