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

Return flights

21 Oct - 28 Oct	Air Canada
29 Oct - 13 Nov	Air France
01 Oct - 15 Oct	Air Canada
14 Oct - 21 Oct	Air France
19 Oct - 28 Oct	Air France
08 Oct - 15 Oct	Delta
01 Oct - 28 Oct	Delta
20 Oct - 28 Oct	Air France
29 Oct - 07 Nov	Delta
01 Oct - 07 Oct	Air Canada
01 Oct - 08 Oct	Air Canada
05 Oct - 14 Oct	Air Canada
27 Oct - 12 Nov	KLM
27 Oct - 12 Nov	British Airways	direct
06 Oct - 01 Nov	Air Canada
07 Oct - 01 Nov	Air Canada
26 Oct - 10 Nov	Air France
31 Oct - 07 Nov	KLM
30 Oct - 04 Nov	KLM
26 Oct - 02 Nov	Delta

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 $491

Return flights