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Cheapest one-way flights from Houston (HOU) to Porto (OPO), August

Select a price to book. see full year.

Dates, airline, and price
Dates	Airline	Price
02 Aug	Frontier Airlines
18 Aug	United
19 Aug	United
23 Aug	United
24 Aug	United
25 Aug	United
30 Aug	United
22 Aug	Air Canada
20 Aug	Lufthansa
21 Aug	Air Canada

deals for return flights from Houston to Porto in August.

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Updated Jul 19, 2026.

About these fares

These results come from our latest search across airlines for your currency. Prices change quickly and are not locked until you complete booking—always confirm the total and fare rules on the partner site.

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Cheapest one-way flights from Houston (HOU) to Porto (OPO), August

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