Cheapest return flights from Houston to Lisbon in September from 661€

Best time to book flights for Houston (IAH) to Lisbon (LIS) flights at AirHint

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

Return flights

01 Sep - 09 Sep Turkish Airlines
02 Sep - 10 Sep Turkish Airlines
03 Sep - 11 Sep Turkish Airlines
04 Sep - 12 Sep Turkish Airlines
11 Sep - 19 Sep Turkish Airlines
18 Sep - 26 Sep Turkish Airlines
22 Sep - 30 Sep Turkish Airlines
24 Sep - 02 Oct Turkish Airlines
08 Sep - 16 Sep Turkish Airlines
09 Sep - 17 Sep Turkish Airlines
10 Sep - 18 Sep Turkish Airlines
28 Sep - 06 Oct Air Canada
26 Sep - 04 Oct Turkish Airlines
25 Sep - 03 Oct Air Canada

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

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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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