Cheapest return flights from Houston (IAH) to Porto (OPO), August

Select a price to book. see full year.

Dates, airline, and price
Dates Airline Price
26 Aug 02 Sep Frontier Airlines
21 Aug 28 Aug Frontier Airlines
18 Aug 25 Aug Turkish Airlines
20 Aug 27 Aug Turkish Airlines
27 Aug 03 Sep Turkish Airlines
25 Aug 01 Sep Turkish Airlines
19 Aug 26 Aug Turkish Airlines
12 Aug 19 Aug Air Canada
07 Aug 21 Aug Frontier Airlines
17 Aug 24 Aug Air Canada
11 Aug 18 Aug Air France
24 Aug 31 Aug Turkish Airlines
28 Aug 04 Sep Turkish Airlines
31 Aug 07 Sep Turkish Airlines
23 Aug 30 Aug Turkish Airlines
30 Aug 06 Sep Turkish Airlines
29 Aug 05 Sep Turkish Airlines
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deals for one-way flights from Houston to Porto in August.

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Updated Jul 6, 2026.

About these fares

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