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

Return flights

27 Oct - 11 Nov	Air Canada
29 Oct - 05 Nov	KLM
22 Oct - 12 Nov	Air France
27 Oct - 14 Nov	KLM
27 Oct - 13 Nov	KLM
29 Oct - 07 Nov	Delta
22 Oct - 31 Oct	Delta
29 Oct - 03 Nov	Virgin Atlantic
23 Oct - 30 Oct	British Airways
22 Oct - 20 Nov	United
24 Oct - 30 Oct	British Airways
26 Oct - 02 Nov	Virgin Atlantic
23 Oct - 29 Oct	Delta
23 Oct - 04 Nov	Air France
24 Oct - 27 Oct	Virgin Atlantic
22 Oct - 31 Oct	United	direct
24 Oct - 30 Oct	Lufthansa	direct
23 Oct - 30 Oct	Lufthansa	direct
22 Oct - 26 Oct	United	direct
23 Oct - 27 Oct	Lufthansa	direct

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

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 October from 487€

Return flights