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

Return flights

02 Mar - 11 Mar	KLM
04 Mar - 18 Mar	Air France
17 Mar - 24 Mar	British Airways	direct
02 Mar - 11 Mar	British Airways	direct
07 Mar - 17 Mar	Lufthansa
31 Mar - 14 Apr	British Airways	direct
09 Mar - 16 Mar	British Airways	direct
18 Mar - 22 Mar	Finnair
03 Mar - 28 Mar	Iberia
27 Mar - 06 Apr	Lufthansa	direct
27 Mar - 03 Apr	British Airways
31 Mar - 20 Apr	Delta
05 Mar - 28 Mar	Air Canada
31 Mar - 20 Apr	United	direct
04 Mar - 18 Mar	Lufthansa	direct

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 434€

Return flights