Cheapest return flights from Houston to Lisbon in September from $607

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

Return flights

23 Sep - 07 Oct Air Canada
19 Sep - 26 Sep Frontier Airlines
17 Sep - 24 Sep Spirit Airlines
09 Sep - 18 Sep Spirit Airlines
09 Sep - 16 Sep Spirit Airlines
24 Sep - 01 Oct Spirit Airlines
26 Sep - 03 Oct Frontier Airlines
09 Sep - 20 Sep Spirit Airlines
29 Sep - 06 Oct Spirit Airlines
06 Sep - 13 Sep Spirit Airlines
08 Sep - 29 Sep Spirit Airlines
23 Sep - 30 Sep Spirit Airlines
07 Sep - 14 Sep Spirit Airlines
08 Sep - 20 Sep Spirit Airlines
28 Sep - 05 Oct Spirit Airlines
30 Sep - 07 Oct Spirit Airlines
25 Sep - 02 Oct Turkish Airlines
27 Sep - 04 Oct Spirit Airlines

Also check the deals for one-way flights from Houston to Lisbon 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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