Cheapest return flights from Houston to Lisbon in September from 542€

AirHint found the following cheapest return flights from Houston (IAH) to Lisbon (LIS) in September 2026 (see full year).

Return flights

15 Sep - 22 Sep Air Canada
09 Sep - 16 Sep Turkish Airlines
10 Sep - 17 Sep Turkish Airlines
01 Sep - 08 Sep Turkish Airlines
02 Sep - 09 Sep Turkish Airlines
06 Sep - 13 Sep Scandinavian Airlines
08 Sep - 15 Sep Turkish Airlines
03 Sep - 10 Sep Turkish Airlines
04 Sep - 11 Sep Turkish Airlines
07 Sep - 14 Sep Turkish Airlines

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

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