Cheapest return flights from Houston to London in September from $546

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

Return flights

18 Sep - 24 Sep Spirit Airlines
11 Sep - 16 Sep Spirit Airlines
08 Sep - 20 Sep Spirit Airlines
08 Sep - 19 Sep Air Canada
28 Sep - 10 Oct Spirit Airlines
16 Sep - 25 Sep Air Canada
01 Sep - 08 Sep Spirit Airlines
03 Sep - 10 Sep United
11 Sep - 17 Sep Spirit Airlines
09 Sep - 16 Sep United
11 Sep - 24 Sep Air Canada
28 Sep - 10 Oct American Airlines direct
25 Sep - 04 Oct American Airlines direct

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

Skyscanner

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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