Cheapest return flights from Houston to Porto in September from 489€

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

Return flights

23 Sep - 30 Sep Air Canada
14 Sep - 22 Sep Iberia
09 Sep - 17 Sep British Airways
15 Sep - 23 Sep British Airways
17 Sep - 25 Sep Air France
06 Sep - 14 Sep Air Canada
16 Sep - 24 Sep Air Canada
08 Sep - 16 Sep Air Canada
18 Sep - 26 Sep Air Canada
07 Sep - 15 Sep Turkish Airlines

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

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