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

Return flights

07 Sep - 18 Sep	Spirit Airlines
25 Sep - 07 Oct	Spirit Airlines
27 Sep - 04 Oct	Spirit Airlines
08 Sep - 11 Sep	Spirit Airlines
08 Sep - 15 Sep	Spirit Airlines
30 Sep - 08 Oct	Spirit Airlines
25 Sep - 29 Sep	Spirit Airlines
04 Sep - 08 Sep	Spirit Airlines
09 Sep - 12 Sep	Spirit Airlines
22 Sep - 29 Sep	Spirit Airlines
21 Sep - 05 Oct	Spirit Airlines
20 Sep - 27 Sep	Spirit Airlines
17 Sep - 27 Sep	Spirit Airlines
08 Sep - 14 Sep	Spirit Airlines
25 Sep - 10 Oct	Spirit Airlines
16 Sep - 07 Oct	Spirit Airlines

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

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.

Book a cheap hotel in London

Cheap car rent in London

Cheapest return flights from Houston to London in September from 392€

Return flights