AirHint found the following cheapest return flights from Houston (IAH) to London (LTN) in January 2026 (see full year).

Return flights

29 Jan - 02 Feb	Air Canada
20 Jan - 27 Jan	Spirit Airlines
21 Jan - 27 Jan	Air Canada
21 Jan - 28 Jan	Air Canada
26 Jan - 29 Jan	Air Canada
21 Jan - 25 Jan	Air Canada
21 Jan - 24 Jan	Air Canada
22 Jan - 28 Jan	Lufthansa
25 Jan - 10 Feb	Turkish Airlines
26 Jan - 05 Feb	Lufthansa
26 Jan - 09 Feb	Turkish Airlines
22 Jan - 26 Jan	Lufthansa
22 Jan - 29 Jan	Lufthansa
24 Jan - 26 Jan	Turkish Airlines
31 Jan - 04 Feb	Turkish Airlines
29 Jan - 03 Feb	Turkish Airlines
28 Jan - 03 Feb	Spirit Airlines
30 Jan - 14 Feb	Air Canada
29 Jan - 01 Feb	WestJet
31 Jan - 06 Feb	KLM

Also check the deals for one-way flights from Houston to London in January.

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 January from 478€

Return flights