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

Return flights

26 Mar - 04 Apr	Air Canada
23 Mar - 07 Apr	Lufthansa
25 Mar - 31 Mar	Lufthansa
09 Mar - 15 Mar	Lufthansa
16 Mar - 23 Mar	Lufthansa
02 Mar - 03 Apr	Air France
01 Mar - 03 Apr	Air France
16 Mar - 30 Mar	Lufthansa
31 Mar - 11 Apr	Lufthansa
22 Mar - 30 Mar	Lufthansa
18 Mar - 30 Mar	Lufthansa
04 Mar - 09 Mar	Turkish Airlines
01 Mar - 08 Mar	Air Canada
17 Mar - 23 Mar	Lufthansa
19 Mar - 23 Mar	Lufthansa
29 Mar - 04 Apr	Air France
26 Mar - 29 Apr	Air Canada
28 Mar - 04 Apr	Spirit Airlines
23 Mar - 06 Apr	Air France

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

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 March from 529€

Return flights